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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: Allumage
  • Categories: Suralimentation (Turbo)
Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
      Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
      €230.39Price
      Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
          Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
          €230.39Price
          Raccord Pompe à essence Clio GrN
              Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
              €50.45Price
              Raccord Pompe à essence Clio GrN
                  Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                  €50.45Price
                  En Stock
                  €50.86 Price
                  En Stock
                  €50.86 Price
                  Manchon pipe de remplissage réservoir Twingo 2 RS
                      Manchon pipe de remplissage réservoir Twingo 2 RS
                      €50.86Price
                      Manchon pipe de remplissage réservoir Twingo 2 RS
                          Manchon pipe de remplissage réservoir Twingo 2 RS
                          €50.86Price
                          Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                              Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                              €140.75Price
                              Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                  Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                  €140.75Price
                                  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
                                          €266.00 Price
                                          En Stock
                                          €266.00 Price
                                          Wasegate Forge Clio 4 RS
                                              Optimize your boost management with the Forge Motorsport Wastegate for Renault Clio 4 RS (reference FMACRTRCT ). This piston-actuated turbo actuator is designed to provide significantly higher pressure stability than the factory unit. Essential for...
                                              €266.00Price
                                              Wasegate Forge Clio 4 RS
                                                  Optimize your boost management with the Forge Motorsport Wastegate for Renault Clio 4 RS (reference FMACRTRCT ). This piston-actuated turbo actuator is designed to provide significantly higher pressure stability than the factory unit. Essential for...
                                                  €266.00Price
                                                  Joint de conduit d'air sortie de turbo Clio 4 RS - Megane 4 GT et RS
                                                      Ensure absolute air tightness within your forced induction system with the Genuine Renault Turbo Outlet Air Duct Gasket . Specifically calibrated to withstand the high pressures of turbocharged engines, this official O-ring eliminates boost leaks between the turbocharger and...
                                                      €15.34Price
                                                      Joint de conduit d'air sortie de turbo Clio 4 RS - Megane 4 GT et RS
                                                          Ensure absolute air tightness within your forced induction system with the Genuine Renault Turbo Outlet Air Duct Gasket . Specifically calibrated to withstand the high pressures of turbocharged engines, this official O-ring eliminates boost leaks between the turbocharger and...
                                                          €15.34Price
                                                          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
                                                                  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
                                                                          En Stock
                                                                          €486.55 Price
                                                                          En Stock
                                                                          €486.55 Price
                                                                          Collecteur admission Clio 2 X65 Cup et Gr N
                                                                              Collecteur admission Clio 2 X65 Cup et Gr N Prévu pour papillon mécanique
                                                                              €486.55Price
                                                                              Collecteur admission Clio 2 X65 Cup et Gr N
                                                                                  Collecteur admission Clio 2 X65 Cup et Gr N Prévu pour papillon mécanique
                                                                                  €486.55Price
                                                                                  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
                                                                                          €27.47 Price
                                                                                          En Stock
                                                                                          €27.47 Price
                                                                                          Joint de turbo sur collecteur Megane 2 RS Megane 3 RS
                                                                                              Optimize your F4RT engine's sealing with this genuine RENAULT turbocharger to manifold gasket . Specifically designed for the Renault Megane 2 RS and Megane 3 RS , it is the essential component to maintain nominal boost pressure. Do not risk an exhaust leak that would degrade your performance and the...
                                                                                              €27.47Price
                                                                                              Joint de turbo sur collecteur Megane 2 RS Megane 3 RS
                                                                                                  Optimize your F4RT engine's sealing with this genuine RENAULT turbocharger to manifold gasket . Specifically designed for the Renault Megane 2 RS and Megane 3 RS , it is the essential component to maintain nominal boost pressure. Do not risk an exhaust leak that would degrade your performance and the...
                                                                                                  €27.47Price
                                                                                                  En Stock
                                                                                                  €24.00 €30.00 Regular price -20% off Price
                                                                                                  En Stock
                                                                                                  €24.00 €30.00 Regular price -20% off Price
                                                                                                  Jeu de Bougies Renault Clio Williams
                                                                                                      Jeu de Bougies Renault Clio Williams Véritable produit d'origine
                                                                                                      €24.00€30.00Regular price-20% offPrice
                                                                                                      Jeu de Bougies Renault Clio Williams
                                                                                                          Jeu de Bougies Renault Clio Williams Véritable produit d'origine
                                                                                                          €24.00€30.00Regular price-20% offPrice
                                                                                                          En Stock
                                                                                                          €220.69 Price
                                                                                                          En Stock
                                                                                                          €220.69 Price
                                                                                                          Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                              Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                              €220.69Price
                                                                                                              Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                                  Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                                  €220.69Price
                                                                                                                  En Stock
                                                                                                                  €69.56 Price
                                                                                                                  En Stock
                                                                                                                  €69.56 Price
                                                                                                                  Flexible à carburant Té / rampe Clio 3 Cup
                                                                                                                      Do not risk a fuel system failure mid-session. The Goodridge Tee to fuel rail hose is crucial for the reliability of your Clio 3 x85 Cup . Keeping a worn or inadequate hose directly exposes your engine to critical fuel starvation or severe leak risks. Permanently secure your injection system with this high-precision...
                                                                                                                      €69.56Price
                                                                                                                      Flexible à carburant Té / rampe Clio 3 Cup
                                                                                                                          Do not risk a fuel system failure mid-session. The Goodridge Tee to fuel rail hose is crucial for the reliability of your Clio 3 x85 Cup . Keeping a worn or inadequate hose directly exposes your engine to critical fuel starvation or severe leak risks. Permanently secure your injection system with this high-precision...
                                                                                                                          €69.56Price
                                                                                                                          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
                                                                                                                                  En Stock
                                                                                                                                  €345.64 Price
                                                                                                                                  En Stock
                                                                                                                                  €345.64 Price
                                                                                                                                  Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                                                      Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                                                      €345.64Price
                                                                                                                                      Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                                                          Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                                                          €345.64Price
                                                                                                                                          Dump Valve GFB DV+ - Diverter Valve Clio 4 RS - Megane 4 RS et Megane 4 GTGFB DV+ Diverter Valve - Renault Clio 4 RS / Megane 4 GT / Megane 4 RS / Alpine A110
                                                                                                                                              Stop losing your turbo boost! The GFB DV+ Dump Valve (Diverter Valve) is the essential upgrade for the reliability and responsiveness of your Renault Sport 1.6T and 1.8T engine (Clio 4 RS, Megane 4 GT, Megane 4 RS, Alpine A110). Retain the factory electronics...
                                                                                                                                              €127.86Price
                                                                                                                                              Dump Valve GFB DV+ - Diverter Valve Clio 4 RS - Megane 4 RS et Megane 4 GTGFB DV+ Diverter Valve - Renault Clio 4 RS / Megane 4 GT / Megane 4 RS / Alpine A110
                                                                                                                                                  Stop losing your turbo boost! The GFB DV+ Dump Valve (Diverter Valve) is the essential upgrade for the reliability and responsiveness of your Renault Sport 1.6T and 1.8T engine (Clio 4 RS, Megane 4 GT, Megane 4 RS, Alpine A110). Retain the factory electronics...
                                                                                                                                                  €127.86Price
                                                                                                                                                  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
                                                                                                                                                          En Stock
                                                                                                                                                          €546.20 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €546.20 Price
                                                                                                                                                          Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                                              Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                                              €546.20Price
                                                                                                                                                              Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                                                  Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                                                  €546.20Price
                                                                                                                                                                  Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2
                                                                                                                                                                      Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2 Référence: 7711050937
                                                                                                                                                                      €3.04Price
                                                                                                                                                                      Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2
                                                                                                                                                                          Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2 Référence: 7711050937
                                                                                                                                                                          €3.04Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €265.70 Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €265.70 Price
                                                                                                                                                                          Fuel Gauge/Pump Module Clio 3 RS/R3/Cup - Original
                                                                                                                                                                              The original Renault fuel gauge/pump module is an essential part to ensure a reliable and precise fuel supply on your Renault Clio 3 RS , Renault Clio R3 , and Renault Clio 3 X85 Cup . It guarantees accurate fuel level measurement and constant pressure, indispensable for optimal performance. We ship worldwide.
                                                                                                                                                                              €265.70Price
                                                                                                                                                                              Fuel Gauge/Pump Module Clio 3 RS/R3/Cup - Original
                                                                                                                                                                                  The original Renault fuel gauge/pump module is an essential part to ensure a reliable and precise fuel supply on your Renault Clio 3 RS , Renault Clio R3 , and Renault Clio 3 X85 Cup . It guarantees accurate fuel level measurement and constant pressure, indispensable for optimal performance. We ship worldwide.
                                                                                                                                                                                  €265.70Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €396.19 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €396.19 Price
                                                                                                                                                                                  Module jauge pompe Megane 2 RSMegane 2 RS Fuel Gauge/Pump Module - Original
                                                                                                                                                                                      The original Renault fuel gauge/pump module is an essential part to ensure reliable and precise fuel supply on your Renault Megane 2 RS . Please note, there are two different assemblies for this vehicle. Contact us with your vehicle's VIN for accurate guidance.
                                                                                                                                                                                      €396.19Price
                                                                                                                                                                                      Module jauge pompe Megane 2 RSMegane 2 RS Fuel Gauge/Pump Module - Original
                                                                                                                                                                                          The original Renault fuel gauge/pump module is an essential part to ensure reliable and precise fuel supply on your Renault Megane 2 RS . Please note, there are two different assemblies for this vehicle. Contact us with your vehicle's VIN for accurate guidance.
                                                                                                                                                                                          €396.19Price
                                                                                                                                                                                          Durite d'induction (admission) Forge Motorsport Megane 4 RSDurite d'induction (admission) Forge Motorsport Megane 4 RS
                                                                                                                                                                                              Durite d'induction (admission) Forge Motorsport Megane 4 RS Produit de qualité permettant de limiter les perturbations.
                                                                                                                                                                                              €118.31Price
                                                                                                                                                                                              Durite d'induction (admission) Forge Motorsport Megane 4 RSDurite d'induction (admission) Forge Motorsport Megane 4 RS
                                                                                                                                                                                                  Durite d'induction (admission) Forge Motorsport Megane 4 RS Produit de qualité permettant de limiter les perturbations.
                                                                                                                                                                                                  €118.31Price
                                                                                                                                                                                                  Dump Valve ouverte Forge Megane 4 RSDump Valve ouverte Forge Megane 4 RS
                                                                                                                                                                                                      Dump Valve ouverte Forge Megane 4 RS Permet de faire le bruit de decharge du turbo fortement apprécié.
                                                                                                                                                                                                      €299.00Price
                                                                                                                                                                                                      Dump Valve ouverte Forge Megane 4 RSDump Valve ouverte Forge Megane 4 RS
                                                                                                                                                                                                          Dump Valve ouverte Forge Megane 4 RS Permet de faire le bruit de decharge du turbo fortement apprécié.
                                                                                                                                                                                                          €299.00Price
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €211.24 Price
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €211.24 Price
                                                                                                                                                                                                          Cablage Volant ALS Megane N4
                                                                                                                                                                                                              Optimize the management of your anti-lag system with the Genuine Renault Sport Steering Wheel ALS Wiring Harness (Part Number 7711167187) . Specifically engineered for the rally-spec Megane N4 , this motorsport-grade electrical loom ensures a shielded,...
                                                                                                                                                                                                              €211.24Price
                                                                                                                                                                                                              Cablage Volant ALS Megane N4
                                                                                                                                                                                                                  Optimize the management of your anti-lag system with the Genuine Renault Sport Steering Wheel ALS Wiring Harness (Part Number 7711167187) . Specifically engineered for the rally-spec Megane N4 , this motorsport-grade electrical loom ensures a shielded,...
                                                                                                                                                                                                                  €211.24Price
                                                                                                                                                                                                                  Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv
                                                                                                                                                                                                                      Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv Référence: 8200329496
                                                                                                                                                                                                                      €194.51Price
                                                                                                                                                                                                                      Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv
                                                                                                                                                                                                                          Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv Référence: 8200329496
                                                                                                                                                                                                                          €194.51Price
                                                                                                                                                                                                                          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