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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: Alimentation
  • Categories: Préparation intérieure
  • Categories: Refroidissement
  • Categories: Support moteur
Collection de Ségments (X82.70)
      Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
      €37.55Price
      Collection de Ségments (X82.70)
          Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
          €37.55Price
          En Stock
          €174.00 Price
          En Stock
          €174.00 Price
          Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
              €174.00Price
              Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                  €174.00Price
                  Poulie accessoire filtrante (damper) Twingo RS, R1 et R2Poulie accessoire filtrante (damper) Twingo RS, R1 et R2
                      Poulie accessoire filtrante Twingo RS, R1 et R2 7711167301
                      €127.10Price
                      Poulie accessoire filtrante (damper) Twingo RS, R1 et R2Poulie accessoire filtrante (damper) Twingo RS, R1 et R2
                          Poulie accessoire filtrante Twingo RS, R1 et R2 7711167301
                          €127.10Price
                          Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
                              Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
                              €20.87Price
                              Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
                                  Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
                                  €20.87Price
                                  En Stock
                                  €37.52 Price
                                  En Stock
                                  €37.52 Price
                                  Raccord 90° de rampe d'injection Clio Gr N
                                      Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                      €37.52Price
                                      Raccord 90° de rampe d'injection Clio Gr N
                                          Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                          €37.52Price
                                          Vis de bielle origine
                                              Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                              €8.56Price
                                              Vis de bielle origine
                                                  Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                                  €8.56Price
                                                  En Stock
                                                  €251.47 Price
                                                  En Stock
                                                  €251.47 Price
                                                  Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                                      Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                                      €251.47Price
                                                      Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                                          Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                                          €251.47Price
                                                          En Stock
                                                          €122.62 Price
                                                          En Stock
                                                          €122.62 Price
                                                          Batterie sèche 12V-24Ah
                                                              Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                                                              €122.62Price
                                                              Batterie sèche 12V-24Ah
                                                                  Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                                                                  €122.62Price
                                                                  En Stock
                                                                  €3.16 Price
                                                                  En Stock
                                                                  €3.16 Price
                                                                  Clip maintien support linguet Twingo R2 195/205
                                                                      Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                      €3.16Price
                                                                      Clip maintien support linguet Twingo R2 195/205
                                                                          Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                          €3.16Price
                                                                          En Stock
                                                                          €66.99 Price
                                                                          En Stock
                                                                          €66.99 Price
                                                                          Injecteur Clio 3 RS et X85 Cup
                                                                              The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                              €66.99Price
                                                                              Injecteur Clio 3 RS et X85 Cup
                                                                                  The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                  €66.99Price
                                                                                  Vis Fixation Volant Moteur
                                                                                      Secure the transmission of power from your crankshaft to your clutch assembly with this heavy-duty Flywheel Fixing Bolt for the Renault Clio 16S, Williams, Clio 2 RS, and Clio 3 RS . This high-tensile specialist hardware is critical to enduring harsh rev matches and the...
                                                                                      €5.64Price
                                                                                      Vis Fixation Volant Moteur
                                                                                          Secure the transmission of power from your crankshaft to your clutch assembly with this heavy-duty Flywheel Fixing Bolt for the Renault Clio 16S, Williams, Clio 2 RS, and Clio 3 RS . This high-tensile specialist hardware is critical to enduring harsh rev matches and the...
                                                                                          €5.64Price
                                                                                          Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                              Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                              €7.80Price
                                                                                              Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                                  Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                                  €7.80Price
                                                                                                  En Stock
                                                                                                  €39.82 Price
                                                                                                  En Stock
                                                                                                  €39.82 Price
                                                                                                  Silent Bloc Powerflex Anti Cabrage Sup Clio 3 RS
                                                                                                      Silent Bloc Powerflex Anti Cabrage Superieur pour Clio 3 RS Produit à inserieur en lieu et place du silent bloc d'origine
                                                                                                      €39.82Price
                                                                                                      Silent Bloc Powerflex Anti Cabrage Sup Clio 3 RS
                                                                                                          Silent Bloc Powerflex Anti Cabrage Superieur pour Clio 3 RS Produit à inserieur en lieu et place du silent bloc d'origine
                                                                                                          €39.82Price
                                                                                                          En Stock
                                                                                                          €402.96 Price
                                                                                                          En Stock
                                                                                                          €402.96 Price
                                                                                                          Convergent boitier filtre assemblé Twingo R2 195cvConvergent boitier filtre assemblé Twingo R2 195cv
                                                                                                              Convergent boitier filtre assemblé Twingo R2 195cv
                                                                                                              €402.96Price
                                                                                                              Convergent boitier filtre assemblé Twingo R2 195cvConvergent boitier filtre assemblé Twingo R2 195cv
                                                                                                                  Convergent boitier filtre assemblé Twingo R2 195cv
                                                                                                                  €402.96Price
                                                                                                                  Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                      Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                      €33.55Price
                                                                                                                      Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                          Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                          €33.55Price
                                                                                                                          Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                                              Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                                              €217.02Price
                                                                                                                              Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                                                  Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                                                  €217.02Price
                                                                                                                                  Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                      Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                      €37.90Price
                                                                                                                                      Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                          Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                          €37.90Price
                                                                                                                                          Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                                                                                                                              Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                                                                                                                              €146.16Price
                                                                                                                                              Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                                                                                                                                  Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                                                                                                                                  €146.16Price
                                                                                                                                                  En Stock
                                                                                                                                                  €119.28 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €119.28 Price
                                                                                                                                                  Capteur pédale accélérateur Clio 3 RS
                                                                                                                                                      Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                                                                                                                                      €119.28Price
                                                                                                                                                      Capteur pédale accélérateur Clio 3 RS
                                                                                                                                                          Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                                                                                                                                          €119.28Price
                                                                                                                                                          Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                                                                                                                                              Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                                                                                                                                              €33.55Price
                                                                                                                                                              Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                                                                                                                                                  Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                                                                                                                                                  €33.55Price
                                                                                                                                                                  Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                                                                                                                                                      Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                                                                                                                                                      €41.95Price
                                                                                                                                                                      Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                                                                                                                                                          Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                                                                                                                                                          €41.95Price
                                                                                                                                                                          Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                                                                                              Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                                                                                              €173.57Price
                                                                                                                                                                              Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                                                                                                  Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                                                                                                  €173.57Price
                                                                                                                                                                                  Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                                                      €4.16Price
                                                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                                                          Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                                                          €4.16Price