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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: Allumage
  • Categories: Circuit d'eau
  • Categories: Préparation intérieure
  • Categories: Support moteur
Jeu de Bougies NGK PFR7ZTG
      Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
      €53.99Price
      Jeu de Bougies NGK PFR7ZTG
          Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
          €53.99Price
          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
                  En Stock
                  €133.39 Price
                  En Stock
                  €133.39 Price
                  Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                      Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                      €133.39Price
                      Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                          Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                          €133.39Price
                          En Stock
                          €57.84 Price
                          En Stock
                          €57.84 Price
                          Capteur PMH Clio 2 RS
                              Capteur PMH Clio 2 RS Selon votre modèle actuel de PMH, il est peut être nécessaire de prendre l'adaptateur proposé en bas de page en supplément.
                              €57.84Price
                              Capteur PMH Clio 2 RS
                                  Capteur PMH Clio 2 RS Selon votre modèle actuel de PMH, il est peut être nécessaire de prendre l'adaptateur proposé en bas de page en supplément.
                                  €57.84Price
                                  En Stock
                                  €22.74 Price
                                  En Stock
                                  €22.74 Price
                                  Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                      Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                      €22.74Price
                                      Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                          Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                          €22.74Price
                                          En Stock
                                          €47.34 Price
                                          En Stock
                                          €47.34 Price
                                          Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                                              Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                                              €47.34Price
                                              Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                                                  Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                                                  €47.34Price
                                                  Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                      Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                      €36.80Price
                                                      Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                          Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                          €36.80Price
                                                          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
                                                                  €81.65 Price
                                                                  En Stock
                                                                  €81.65 Price
                                                                  Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                      Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                      €81.65Price
                                                                      Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                          Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                          €81.65Price
                                                                          Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                                              Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                                              €33.94Price
                                                                              Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                                                  Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                                                  €33.94Price
                                                                                  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
                                                                                          Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                              Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                              €202.56Price
                                                                                              Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                  Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                  €202.56Price
                                                                                                  En Stock
                                                                                                  €139.14 Price
                                                                                                  En Stock
                                                                                                  €139.14 Price
                                                                                                  Piston équipé C (X82.70) Clio 3 RS
                                                                                                      The Renault complete piston (index C) is an original part, supplied with pin and pin clips, designed for your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal engine performance and increased reliability.
                                                                                                      €139.14Price
                                                                                                      Piston équipé C (X82.70) Clio 3 RS
                                                                                                          The Renault complete piston (index C) is an original part, supplied with pin and pin clips, designed for your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal engine performance and increased reliability.
                                                                                                          €139.14Price
                                                                                                          Vis de pompe à eau Clio 2 RS y compris X65Cup et Gr N
                                                                                                              Secure your engine block seal and guarantee the total reliability of your cooling circuit with these factory-spec Water Pump Fixing Bolts for the Renault Clio 2 RS, X65 Cup, and Group N . Engineered specifically for the naturally aspirated 2.0L 16V F4R engine, this high-grade...
                                                                                                              €2.82Price
                                                                                                              Vis de pompe à eau Clio 2 RS y compris X65Cup et Gr N
                                                                                                                  Secure your engine block seal and guarantee the total reliability of your cooling circuit with these factory-spec Water Pump Fixing Bolts for the Renault Clio 2 RS, X65 Cup, and Group N . Engineered specifically for the naturally aspirated 2.0L 16V F4R engine, this high-grade...
                                                                                                                  €2.82Price
                                                                                                                  En Stock
                                                                                                                  €31.01 Price
                                                                                                                  En Stock
                                                                                                                  €31.01 Price
                                                                                                                      Kit colliers pour kit durites d'eau Forge Clio 2 RS
                                                                                                                      €31.01Price
                                                                                                                          Kit colliers pour kit durites d'eau Forge Clio 2 RS
                                                                                                                          €31.01Price
                                                                                                                          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
                                                                                                                                  En Stock
                                                                                                                                  €82.45 Price
                                                                                                                                  En Stock
                                                                                                                                  €82.45 Price
                                                                                                                                  Durite d'eau sortie de radiateur Twingo RS R1 et R2
                                                                                                                                      Durite d'eau sortie de radiateur Twingo RS R1 et R2 Véritable produit d'origine
                                                                                                                                      €82.45Price
                                                                                                                                      Durite d'eau sortie de radiateur Twingo RS R1 et R2
                                                                                                                                          Durite d'eau sortie de radiateur Twingo RS R1 et R2 Véritable produit d'origine
                                                                                                                                          €82.45Price
                                                                                                                                          Collection de 3 segments pour piston Twingo RS R1 et R2 160
                                                                                                                                              Original RENAULT Piston Ring Set for Twingo 2 RS (for 1 piston) Do not compromise the compression and power of your Twingo 2 RS engine. This original RENAULT piston...
                                                                                                                                              €68.32Price
                                                                                                                                              Collection de 3 segments pour piston Twingo RS R1 et R2 160
                                                                                                                                                  Original RENAULT Piston Ring Set for Twingo 2 RS (for 1 piston) Do not compromise the compression and power of your Twingo 2 RS engine. This original RENAULT piston...
                                                                                                                                                  €68.32Price
                                                                                                                                                  En Stock
                                                                                                                                                  €1.00 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €1.00 Price
                                                                                                                                                  Collier serrage inox (durite) diametre 8-12mm
                                                                                                                                                      Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                                                                                                                                      €1.00Price
                                                                                                                                                      Collier serrage inox (durite) diametre 8-12mm
                                                                                                                                                          Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                                                                                                                                          €1.00Price
                                                                                                                                                          RENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hpRENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hp
                                                                                                                                                              Optimize the performance of your Renault Twingo R2 EVO 195hp with this genuine RENAULT SPORT assembled cylinder head (ref. 7711167644). Supplied with valves, retainers, valve springs, rocker arms, and pushrods, this cylinder head is ready to be installed (camshafts not included). Guaranteed performance and reliability.
                                                                                                                                                              €8,104.62Price
                                                                                                                                                              RENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hpRENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hp
                                                                                                                                                                  Optimize the performance of your Renault Twingo R2 EVO 195hp with this genuine RENAULT SPORT assembled cylinder head (ref. 7711167644). Supplied with valves, retainers, valve springs, rocker arms, and pushrods, this cylinder head is ready to be installed (camshafts not included). Guaranteed performance and reliability.
                                                                                                                                                                  €8,104.62Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €82.24 Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €82.24 Price
                                                                                                                                                                  Calorstat Megane 3 RS
                                                                                                                                                                      Ensure optimal thermal regulation for your Renault Megane 3 RS with this genuine Renault thermostat . With an opening temperature of 83°C , it is the key part to ensure your engine runs at the ideal temperature, preventing both overheating and undercooling. Don't compromise the health of your F4R engine.
                                                                                                                                                                      €82.24Price
                                                                                                                                                                      Calorstat Megane 3 RS
                                                                                                                                                                          Ensure optimal thermal regulation for your Renault Megane 3 RS with this genuine Renault thermostat . With an opening temperature of 83°C , it is the key part to ensure your engine runs at the ideal temperature, preventing both overheating and undercooling. Don't compromise the health of your F4R engine.
                                                                                                                                                                          €82.24Price
                                                                                                                                                                          Durite Sortie radiateur de chauffage Twingo RS R1 et R2
                                                                                                                                                                              Durite Sortie radiateur de chauffage Twingo RS R1 et R2 Véritable produit d'origine
                                                                                                                                                                              €38.53Price
                                                                                                                                                                              Durite Sortie radiateur de chauffage Twingo RS R1 et R2
                                                                                                                                                                                  Durite Sortie radiateur de chauffage Twingo RS R1 et R2 Véritable produit d'origine
                                                                                                                                                                                  €38.53Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €1.00 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €1.00 Price
                                                                                                                                                                                  Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                                                                      Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                                                                      €1.00Price
                                                                                                                                                                                      Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                                                                          Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                                                                          €1.00Price
                                                                                                                                                                                          NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
                                                                                                                                                                                              Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
                                                                                                                                                                                              €26.77Price
                                                                                                                                                                                              NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
                                                                                                                                                                                                  Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
                                                                                                                                                                                                  €26.77Price
                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                  €15.49 Price
                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                  €15.49 Price
                                                                                                                                                                                                  bague étanchéité bobine crayon
                                                                                                                                                                                                      The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                                                                      €15.49Price
                                                                                                                                                                                                      bague étanchéité bobine crayon
                                                                                                                                                                                                          The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                                                                          €15.49Price
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €243.60 Price
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €243.60 Price
                                                                                                                                                                                                          Radiateur d'eau
                                                                                                                                                                                                              Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                                                                                                                                                                                                              €243.60Price
                                                                                                                                                                                                              Radiateur d'eau
                                                                                                                                                                                                                  Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                                                                                                                                                                                                                  €243.60Price
                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                  €1.10 Price
                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                  €1.10 Price
                                                                                                                                                                                                                  Collier serrage inox (durite) diametre 20-32mm
                                                                                                                                                                                                                      Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                                                                                                                                                      €1.10Price
                                                                                                                                                                                                                      Collier serrage inox (durite) diametre 20-32mm
                                                                                                                                                                                                                          Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                                                                                                                                                          €1.10Price
                                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                                          €116.83 Price
                                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                                          €116.83 Price
                                                                                                                                                                                                                          Jeu de segments pour piston origine Megane 3 RS
                                                                                                                                                                                                                              Jeu de segments pour piston origine Megane 3 RS 1 Jeu comprend le necessaire pour 1 piston
                                                                                                                                                                                                                              €116.83Price
                                                                                                                                                                                                                              Jeu de segments pour piston origine Megane 3 RS
                                                                                                                                                                                                                                  Jeu de segments pour piston origine Megane 3 RS 1 Jeu comprend le necessaire pour 1 piston
                                                                                                                                                                                                                                  €116.83Price