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Engine Parts & Tuning Hardware

Unleash Your Engine's Power: Performance Parts & Accessories

At Optimiz Access, we offer a vast lineup of engine performance parts and accessories to boost the output of your sports vehicle or premium automobile. Optimize your engine for extreme performance and enjoy an exhilarating driving experience on both road and track.

Key benefits of engine tuning: substantial horsepower and torque gains for rapid acceleration, sharper throttle response, enhanced mechanical reliability using high-strength components, and tailored custom tuning suited to all engines.

Essential Products to Maximize Engine Performance

Discover all our precision-engineered components designed to increase efficiency and durability in your engine block:

  • Cold Air Intakes & Air Filtration – Performance sports filters and carbon intake systems for maximum air filling.
  • Intercoolers & Charge Coolers – Efficient intake air cooling to sustain consistent power output under heavy loads.
  • Forged Pistons & Connecting Rods – Heavy-duty internal components built to withstand extreme temperatures and boost pressures.
  • Turbos & Superchargers – Forced induction upgrades delivering significant power increases.
  • Ignition & Servicing – Competition spark plugs, high-output ignition coils, and high-performance oil filters.

Industry-Leading Benchmark Brands

We stock top tuning and motorsport manufacturers: Wagner Tuning, Forge Motorsport, Magnecor, Green Filter, BMC Filter, NGK, Vibra Technics, and Powerflex. We also supply OEM factory parts to ensure meticulous engine maintenance.

Why you should Choose Optimiz Access for Your Engine Upgrades

Since 2010, Optimiz Access has specialized in selecting top-tier engine components for the custom upgrading and maintenance of sports vehicles. Located in northern France (Hauts-de-France) — near Lille, Valenciennes, Cambrai, Arras, Seclin, Douai, and Saint-Quentin —, our expert technicians guide your hardware selection and provide professional installation in our workshop. We ensure strict quality control along with fast worldwide shipping.

Unleash Your Engine's Full Potential Today

Give your car the raw power and sharp response it deserves. Trust the expertise of Optimiz Access, select your engine performance parts today, and benefit from our fast dispatch.

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  • Categories: Circuit d'air
  • Categories: Préparation intérieure
  • Categories: Refroidissement
Sur commande ou en cours de réappro
€15.34 Price
Sur commande ou en cours de réappro
€15.34 Price
Vis fixation chapeau palier vilebrequin à l'unité
      This genuine Renault crankshaft bearing cap bolt is designed to ensure a solid and durable attachment of the crankshaft bearing in your engine. Precision-machined and manufactured to the highest standards, it ensures optimal performance and extends the lifespan of your engine.
      €15.34Price
      Vis fixation chapeau palier vilebrequin à l'unité
          This genuine Renault crankshaft bearing cap bolt is designed to ensure a solid and durable attachment of the crankshaft bearing in your engine. Precision-machined and manufactured to the highest standards, it ensures optimal performance and extends the lifespan of your engine.
          €15.34Price
          Sur commande ou en cours de réappro
          €259.00 Price
          Sur commande ou en cours de réappro
          €259.00 Price
          Plaque reniflard Clio 2 RS 182 - Clio 3 RSPlaque reniflard Clio 2 RS 182 - Clio 3 RS
              Plaque de reniflard taillé massé venant en lieu et place de la plaque d'origine Ajout un raccord Dash permettant de venir connecter directement un recuperateur de vapeur d'huile. Cette piece est un serieux atout pour les véhicules ayant modifié le collecteur d'admission d'origine. Produit a completer avec un joint Loctite 5980.
              €259.00Price
              Plaque reniflard Clio 2 RS 182 - Clio 3 RSPlaque reniflard Clio 2 RS 182 - Clio 3 RS
                  Plaque de reniflard taillé massé venant en lieu et place de la plaque d'origine Ajout un raccord Dash permettant de venir connecter directement un recuperateur de vapeur d'huile. Cette piece est un serieux atout pour les véhicules ayant modifié le collecteur d'admission d'origine. Produit a completer avec un joint Loctite 5980.
                  €259.00Price
                  Sur commande ou en cours de réappro
                  €16.00 Price
                  Sur commande ou en cours de réappro
                  €16.00 Price
                      Trompette / event pour boa (gaine) admission d'air diametre 76mm
                      €16.00Price
                          Trompette / event pour boa (gaine) admission d'air diametre 76mm
                          €16.00Price
                          Sur commande ou en cours de réappro
                          €1.00 Price
                          Sur commande ou en cours de réappro
                          €1.00 Price
                          Collier serrage inox (durite) diametre 16-25mm
                              Collier serrage inox (durite) diametre 16-25mm Vendu à l'unité
                              €1.00Price
                              Collier serrage inox (durite) diametre 16-25mm
                                  Collier serrage inox (durite) diametre 16-25mm Vendu à l'unité
                                  €1.00Price
                                  Sur commande ou en cours de réappro
                                  €278.86 Price
                                  Sur commande ou en cours de réappro
                                  €278.86 Price
                                  Arbre à cames Admission Clio 2 RSArbre à cames Admission Clio 2 RS
                                      Arbre à cames Admission Clio 2 RS Véritable produit d'origine
                                      €278.86Price
                                      Arbre à cames Admission Clio 2 RSArbre à cames Admission Clio 2 RS
                                          Arbre à cames Admission Clio 2 RS Véritable produit d'origine
                                          €278.86Price
                                          Sur commande ou en cours de réappro
                                          €1,926.00 Price
                                          Sur commande ou en cours de réappro
                                          €1,926.00 Price
                                              Culasse avec soupapes Clio X85 R3 230cv 7711160276
                                              €1,926.00Price
                                                  Culasse avec soupapes Clio X85 R3 230cv 7711160276
                                                  €1,926.00Price
                                                  Sur commande ou en cours de réappro
                                                  €94.91 Price
                                                  Sur commande ou en cours de réappro
                                                  €94.91 Price
                                                  Collection de coussinets de bielles de Twingo RS et R1
                                                      Renault Twingo 2 RS Connecting Rod Bearing Set (Original) Original Renault connecting rod bearing set for Twingo 2 RS. Ensures the longevity and performance of your engine. Discover our compatible connecting rod bolts and oil pan gaskets at the bottom of the page.
                                                      €94.91Price
                                                      Collection de coussinets de bielles de Twingo RS et R1
                                                          Renault Twingo 2 RS Connecting Rod Bearing Set (Original) Original Renault connecting rod bearing set for Twingo 2 RS. Ensures the longevity and performance of your engine. Discover our compatible connecting rod bolts and oil pan gaskets at the bottom of the page.
                                                          €94.91Price
                                                          Sur commande ou en cours de réappro
                                                          €122.90 €245.81 Regular price -50% off Price
                                                          Sur commande ou en cours de réappro
                                                          €122.90 €245.81 Regular price -50% off Price
                                                          Kit distribution origine Twingo 2 RS et R1
                                                              Kit distribution origine Twingo 2 RS
                                                              €122.90€245.81Regular price-50% offPrice
                                                              Kit distribution origine Twingo 2 RS et R1
                                                                  Kit distribution origine Twingo 2 RS
                                                                  €122.90€245.81Regular price-50% offPrice
                                                                  Sur commande ou en cours de réappro
                                                                  €319.57 Price
                                                                  Sur commande ou en cours de réappro
                                                                  €319.57 Price
                                                                  New Genuine Renault Piston - Megane 3 RS & N4 EngineNew Genuine Renault Piston - Megane 3 RS & N4 Engine
                                                                      The centerpiece of your Renault Megane 3 RS or Megane N4 engine, this genuine Renault piston is sold individually for targeted repair. Essential for restoring engine compression and preventing power loss, this new piston guarantees newfound reliability and performance. Important: the piston is supplied with only one circlip, and piston rings must be ordered...
                                                                      €319.57Price
                                                                      New Genuine Renault Piston - Megane 3 RS & N4 EngineNew Genuine Renault Piston - Megane 3 RS & N4 Engine
                                                                          The centerpiece of your Renault Megane 3 RS or Megane N4 engine, this genuine Renault piston is sold individually for targeted repair. Essential for restoring engine compression and preventing power loss, this new piston guarantees newfound reliability and performance. Important: the piston is supplied with only one circlip, and piston rings must be ordered...
                                                                          €319.57Price
                                                                          Sur commande ou en cours de réappro
                                                                          €9.26 Price
                                                                          Sur commande ou en cours de réappro
                                                                          €9.26 Price
                                                                          Genuine Renault Connecting Rod Bolt - Renault Super 5 GT TURBO (Individual)Genuine Renault Connecting Rod Bolt - Renault Super 5 GT TURBO (Individual)
                                                                              Ensure ultimate engine reliability for your Renault Super 5 GT TURBO with this genuine Renault connecting rod bolt , sold individually. A crucial element of the rotating assembly, its strength is vital for your engine's performance and longevity. Don't compromise your block's integrity with uncertain quality parts.
                                                                              €9.26Price
                                                                              Genuine Renault Connecting Rod Bolt - Renault Super 5 GT TURBO (Individual)Genuine Renault Connecting Rod Bolt - Renault Super 5 GT TURBO (Individual)
                                                                                  Ensure ultimate engine reliability for your Renault Super 5 GT TURBO with this genuine Renault connecting rod bolt , sold individually. A crucial element of the rotating assembly, its strength is vital for your engine's performance and longevity. Don't compromise your block's integrity with uncertain quality parts.
                                                                                  €9.26Price
                                                                                  Sur commande ou en cours de réappro
                                                                                  €8,731.62 €8,732.50 Regular price -0.01% off Price
                                                                                  Sur commande ou en cours de réappro
                                                                                  €8,731.62 €8,732.50 Regular price -0.01% off Price
                                                                                  F4R Exchange Standard Original Renault Engine for Clio 3 RSF4R Exchange Standard Original Renault Engine for Clio 3 RS
                                                                                      Worried about losing the power and reliability of your Renault Clio 3 RS ? Don't let a tired engine deprive you of thrilling sensations . Opt for our original Renault F4R assembled engine on exchange basis , the ideal solution to regain its former performance. Discover essential complementary products for your...
                                                                                      €8,731.62€8,732.50Regular price-0.01% offPrice
                                                                                      F4R Exchange Standard Original Renault Engine for Clio 3 RSF4R Exchange Standard Original Renault Engine for Clio 3 RS
                                                                                          Worried about losing the power and reliability of your Renault Clio 3 RS ? Don't let a tired engine deprive you of thrilling sensations . Opt for our original Renault F4R assembled engine on exchange basis , the ideal solution to regain its former performance. Discover essential complementary products for your...
                                                                                          €8,731.62€8,732.50Regular price-0.01% offPrice
                                                                                          Sur commande ou en cours de réappro
                                                                                          €174.97 Price
                                                                                          Sur commande ou en cours de réappro
                                                                                          €174.97 Price
                                                                                          Modine Clio 2 cupRENAULT Original Water/Oil Cooler Clio 2 X65 Cup & Clio 3 RS
                                                                                              Original RENAULT Water/Oil Cooler for Clio 2 X65 Cup &amp; Clio 3 RS Do not risk engine overheating and loss of performance . This original RENAULT water/oil heat exchanger is the vital component for maintaining optimal <span...
                                                                                              €174.97Price
                                                                                              Modine Clio 2 cupRENAULT Original Water/Oil Cooler Clio 2 X65 Cup & Clio 3 RS
                                                                                                  Original RENAULT Water/Oil Cooler for Clio 2 X65 Cup &amp; Clio 3 RS Do not risk engine overheating and loss of performance . This original RENAULT water/oil heat exchanger is the vital component for maintaining optimal <span...
                                                                                                  €174.97Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €3,544.38 Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €3,544.38 Price
                                                                                                  Culasse assemblée Megane 3 RSCulasse assemblée Megane 3 RS
                                                                                                      Culasse assemblée Megane 3 RS Culasse neuve comprenant soupapes assemblées
                                                                                                      €3,544.38Price
                                                                                                      Culasse assemblée Megane 3 RSCulasse assemblée Megane 3 RS
                                                                                                          Culasse assemblée Megane 3 RS Culasse neuve comprenant soupapes assemblées
                                                                                                          €3,544.38Price
                                                                                                          Sur commande ou en cours de réappro
                                                                                                          €79.93 Price
                                                                                                          Sur commande ou en cours de réappro
                                                                                                          €79.93 Price
                                                                                                              Coussinet de bielles Clio R3 MAX (prix unitaire) La photo représente 4 coussinets mais le prix est unitaire
                                                                                                              €79.93Price
                                                                                                                  Coussinet de bielles Clio R3 MAX (prix unitaire) La photo représente 4 coussinets mais le prix est unitaire
                                                                                                                  €79.93Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €1.49 Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €1.49 Price
                                                                                                                  Bague 12.4x15 centrage culasse Clio 2 RS
                                                                                                                      Bague 12.4x15 centrage culasse Clio 2 RS
                                                                                                                      €1.49Price
                                                                                                                      Bague 12.4x15 centrage culasse Clio 2 RS
                                                                                                                          Bague 12.4x15 centrage culasse Clio 2 RS
                                                                                                                          €1.49Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €34.98 Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €34.98 Price
                                                                                                                          Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
                                                                                                                              Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
                                                                                                                              €34.98Price
                                                                                                                              Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
                                                                                                                                  Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
                                                                                                                                  €34.98Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €27.89 Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €27.89 Price
                                                                                                                                      Embout porte buse 10/24 Ø8 Clio 4 X98 R3T Référence: 8201543414
                                                                                                                                      €27.89Price
                                                                                                                                          Embout porte buse 10/24 Ø8 Clio 4 X98 R3T Référence: 8201543414
                                                                                                                                          €27.89Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €13.33 Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €13.33 Price
                                                                                                                                              Filtre système arrosage Clio 4 X98 R3T Référence: 8201557624
                                                                                                                                              €13.33Price
                                                                                                                                                  Filtre système arrosage Clio 4 X98 R3T Référence: 8201557624
                                                                                                                                                  €13.33Price
                                                                                                                                                  Joint de boitier papillon
                                                                                                                                                    • Pack
                                                                                                                                                    The mechanical throttle body gasket is a crucial performance part for optimizing the engine operation of your Renault Clio R3 or Renault Clio 3 X85 Cup . Ensure flawless sealing and maintain the power of your competition vehicle with this high-quality replacement gasket.
                                                                                                                                                    €7.93Price
                                                                                                                                                    Joint de boitier papillon
                                                                                                                                                      • Pack
                                                                                                                                                      The mechanical throttle body gasket is a crucial performance part for optimizing the engine operation of your Renault Clio R3 or Renault Clio 3 X85 Cup . Ensure flawless sealing and maintain the power of your competition vehicle with this high-quality replacement gasket.
                                                                                                                                                      €7.93Price
                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                      €12.96 Price
                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                      €12.96 Price
                                                                                                                                                          Manchon réduction femelle/femelle Ø6/Ø8 Clio 4 X98 R3T Référence: 8201489633
                                                                                                                                                          €12.96Price
                                                                                                                                                              Manchon réduction femelle/femelle Ø6/Ø8 Clio 4 X98 R3T Référence: 8201489633
                                                                                                                                                              €12.96Price
                                                                                                                                                              Joint de boitier papillon
                                                                                                                                                                • Pack
                                                                                                                                                                The mechanical throttle body gasket is a quality part essential for optimizing the engine performance of your Renault Twingo R2 . Ensure perfect sealing and maintain the performance of your rally vehicle with this reliable replacement gasket.
                                                                                                                                                                €7.93Price
                                                                                                                                                                Joint de boitier papillon
                                                                                                                                                                  • Pack
                                                                                                                                                                  The mechanical throttle body gasket is a quality part essential for optimizing the engine performance of your Renault Twingo R2 . Ensure perfect sealing and maintain the performance of your rally vehicle with this reliable replacement gasket.
                                                                                                                                                                  €7.93Price
                                                                                                                                                                  Joint de boitier papillon
                                                                                                                                                                    • Pack
                                                                                                                                                                    The mechanical throttle body gasket is a quality part essential for optimizing the operation of your Renault Clio 2 RS Phase 1, Clio Gr N , or Clio 2 X65 Cup . Ensure perfect sealing and maintain your engine's performance with this reliable replacement gasket.
                                                                                                                                                                    €7.93Price
                                                                                                                                                                    Joint de boitier papillon
                                                                                                                                                                      • Pack
                                                                                                                                                                      The mechanical throttle body gasket is a quality part essential for optimizing the operation of your Renault Clio 2 RS Phase 1, Clio Gr N , or Clio 2 X65 Cup . Ensure perfect sealing and maintain your engine's performance with this reliable replacement gasket.
                                                                                                                                                                      €7.93Price
                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                      €25.49 Price
                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                      €25.49 Price
                                                                                                                                                                          Manchon porte buse 10/24F Ø8 Clio 4 X98 R3T Référence: 8201543358
                                                                                                                                                                          €25.49Price
                                                                                                                                                                              Manchon porte buse 10/24F Ø8 Clio 4 X98 R3T Référence: 8201543358
                                                                                                                                                                              €25.49Price
                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                              €40.37 Price
                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                              €40.37 Price
                                                                                                                                                                                  Té égal Ø8 Clio X98 R3T et Cup Référence: 8201489628
                                                                                                                                                                                  €40.37Price
                                                                                                                                                                                      Té égal Ø8 Clio X98 R3T et Cup Référence: 8201489628
                                                                                                                                                                                      €40.37Price
                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                      €15.53 Price
                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                      €15.53 Price
                                                                                                                                                                                          Tube HP Ø8 - 3m Clio X98 R3T et Cup Référence: 8201489629
                                                                                                                                                                                          €15.53Price
                                                                                                                                                                                              Tube HP Ø8 - 3m Clio X98 R3T et Cup Référence: 8201489629
                                                                                                                                                                                              €15.53Price
                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                              €122.15 Price
                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                              €122.15 Price
                                                                                                                                                                                                  Faisceau alimentation pompe Clio 4 X98 R3T et cup 8201489635
                                                                                                                                                                                                  €122.15Price
                                                                                                                                                                                                      Faisceau alimentation pompe Clio 4 X98 R3T et cup 8201489635
                                                                                                                                                                                                      €122.15Price
                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                      €5.77 Price
                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                      €5.77 Price
                                                                                                                                                                                                          Raccord droit legris G1/8 -Ø6 Clio X98 R3T 8201550242
                                                                                                                                                                                                          €5.77Price
                                                                                                                                                                                                              Raccord droit legris G1/8 -Ø6 Clio X98 R3T 8201550242
                                                                                                                                                                                                              €5.77Price
                                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                                              €73.00 Price
                                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                                              €73.00 Price
                                                                                                                                                                                                              Conduit d'air (durite) jonction boite à air / papillon Twingo 2 RSConduit d'air (durite) jonction boite à air / papillon Twingo 2 RS
                                                                                                                                                                                                                  Conduit d'air (durite) jonction boite à air / papillon Twingo 2 RS
                                                                                                                                                                                                                  €73.00Price
                                                                                                                                                                                                                  Conduit d'air (durite) jonction boite à air / papillon Twingo 2 RSConduit d'air (durite) jonction boite à air / papillon Twingo 2 RS
                                                                                                                                                                                                                      Conduit d'air (durite) jonction boite à air / papillon Twingo 2 RS
                                                                                                                                                                                                                      €73.00Price
                                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                                      €54.29 Price
                                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                                      €54.29 Price
                                                                                                                                                                                                                      Jeu de segments pour 1 piston Megane 2 RS
                                                                                                                                                                                                                          Jeu de segments pour 1 piston Megane 2 RS
                                                                                                                                                                                                                          €54.29Price
                                                                                                                                                                                                                          Jeu de segments pour 1 piston Megane 2 RS
                                                                                                                                                                                                                              Jeu de segments pour 1 piston Megane 2 RS
                                                                                                                                                                                                                              €54.29Price
                                                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                                                              €9.42 Price
                                                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                                                              €9.42 Price
                                                                                                                                                                                                                                  Raccord sortie réservoir M3/4 F3/8 Clio R3T et X98Cup Référence: 8201489640
                                                                                                                                                                                                                                  €9.42Price
                                                                                                                                                                                                                                      Raccord sortie réservoir M3/4 F3/8 Clio R3T et X98Cup Référence: 8201489640
                                                                                                                                                                                                                                      €9.42Price
                                                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                                                      €14.44 Price
                                                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                                                      €14.44 Price
                                                                                                                                                                                                                                      Gicleur Piston 2-4 Clio 2 RS 182 et Clio 3 RS
                                                                                                                                                                                                                                          Ensure optimal lubrication for your Clio 2 RS 182, Clio 3 RS, or Megane 2 RS F4R engine with this genuine Renault oil sprayer (oil jet) for cylinders 2 and 4. Essential for reliability, this small component sprays oil under the pistons to cool and lubricate them. Don't take any risks with the health of your F4R engine.
                                                                                                                                                                                                                                          €14.44Price
                                                                                                                                                                                                                                          Gicleur Piston 2-4 Clio 2 RS 182 et Clio 3 RS
                                                                                                                                                                                                                                              Ensure optimal lubrication for your Clio 2 RS 182, Clio 3 RS, or Megane 2 RS F4R engine with this genuine Renault oil sprayer (oil jet) for cylinders 2 and 4. Essential for reliability, this small component sprays oil under the pistons to cool and lubricate them. Don't take any risks with the health of your F4R engine.
                                                                                                                                                                                                                                              €14.44Price