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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: Circuit d'air
  • Categories: Support moteur
  • Categories: Suralimentation (Turbo)
Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
      The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
      €191.53Price
      Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
          The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
          €191.53Price
          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
                  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
                          €36.01 Price
                          En Stock
                          €36.01 Price
                          Kit ressorts Dump Valve Forge
                              Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                              €36.01Price
                              Kit ressorts Dump Valve Forge
                                  Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                  €36.01Price
                                  Dispo selon configuration
                                  €199.00 Price
                                  Dispo selon configuration
                                  €199.00 Price
                                  Admission Forge Clio 4 RS Euro 6Admission Forge Clio 4 RS Euro 6
                                      Ce kit est spécialement conçu pour la Renault Clio 4 RS Trophy (ne convient pas aux clio 4 RS non Trophy) Il comprend le tuyau de silicone conçu sur mesure combiné avec un haut débit filtre de cône non huilée en coton permettant une excellente filtration. Tout le nécessaire est fourni dans le kit, y compris les colliers en acier inoxydable de qualité. Ce kit a été testé et permet un gain...
                                      €199.00Price
                                      Admission Forge Clio 4 RS Euro 6Admission Forge Clio 4 RS Euro 6
                                          Ce kit est spécialement conçu pour la Renault Clio 4 RS Trophy (ne convient pas aux clio 4 RS non Trophy) Il comprend le tuyau de silicone conçu sur mesure combiné avec un haut débit filtre de cône non huilée en coton permettant une excellente filtration. Tout le nécessaire est fourni dans le kit, y compris les colliers en acier inoxydable de qualité. Ce kit a été testé et permet un gain...
                                          €199.00Price
                                          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
                                                  Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGEDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGE
                                                      Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur
                                                      €14.22Price
                                                      Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGEDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGE
                                                          Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur
                                                          €14.22Price
                                                          Dispo selon configuration
                                                          €65.11 Price
                                                          Dispo selon configuration
                                                          €65.11 Price
                                                          T de raccord de Dump Megane 2 RS
                                                              T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                              €65.11Price
                                                              T de raccord de Dump Megane 2 RS
                                                                  T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                  €65.11Price
                                                                  En Stock
                                                                  €12.50 Price
                                                                  En Stock
                                                                  €12.50 Price
                                                                  Joint Collecteur Admission Clio 3 RS
                                                                      Joint Collecteur Admission Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
                                                                      €12.50Price
                                                                      Joint Collecteur Admission Clio 3 RS
                                                                          Joint Collecteur Admission Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
                                                                          €12.50Price
                                                                          High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                                                              Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                                                              €10.93Price
                                                                              High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                                                                  Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                                                                  €10.93Price
                                                                                  En Stock
                                                                                  €220.46 Price
                                                                                  En Stock
                                                                                  €220.46 Price
                                                                                  Dump Valve Forge Recirculation Megane RS
                                                                                      Maximize your engine's responsiveness with the Forge Motorsport Recirculation Dump Valve for Renault Megane 2 RS and Megane 3 RS (reference FMDVRMR ). Unlike atmospheric blow-off valves, this recirculation version diverts air back into the intake system to...
                                                                                      €220.46Price
                                                                                      Dump Valve Forge Recirculation Megane RS
                                                                                          Maximize your engine's responsiveness with the Forge Motorsport Recirculation Dump Valve for Renault Megane 2 RS and Megane 3 RS (reference FMDVRMR ). Unlike atmospheric blow-off valves, this recirculation version diverts air back into the intake system to...
                                                                                          €220.46Price
                                                                                          Echangeur air/air Megane 3 RS et N4Genuine Renault Air/Air Intercooler for Mégane 3 RS and N4
                                                                                              Don't accept any loss of performance for your Mégane 3 RS or Mégane N4 ! This strictly genuine Renault air/air intercooler is the cornerstone for maintaining your engine's power and reliability. Without it, your sports vehicle risks never reaching its full potential, especially in extreme conditions. Find complementary products at the bottom...
                                                                                              €493.96Price
                                                                                              Echangeur air/air Megane 3 RS et N4Genuine Renault Air/Air Intercooler for Mégane 3 RS and N4
                                                                                                  Don't accept any loss of performance for your Mégane 3 RS or Mégane N4 ! This strictly genuine Renault air/air intercooler is the cornerstone for maintaining your engine's power and reliability. Without it, your sports vehicle risks never reaching its full potential, especially in extreme conditions. Find complementary products at the bottom...
                                                                                                  €493.96Price
                                                                                                  En Stock
                                                                                                  €59.00 €69.41 Regular price -15% off Price
                                                                                                  En Stock
                                                                                                  €59.00 €69.41 Regular price -15% off Price
                                                                                                  Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                                                                                                      Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                                                                                                      €59.00€69.41Regular price-15% offPrice
                                                                                                      Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                                                                                                          Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                                                                                                          €59.00€69.41Regular price-15% offPrice
                                                                                                          En Stock
                                                                                                          €244.00 Price
                                                                                                          En Stock
                                                                                                          €244.00 Price
                                                                                                          Wasegate Forge Megane RS
                                                                                                              Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                                                                                                              €244.00Price
                                                                                                              Wasegate Forge Megane RS
                                                                                                                  Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                                                                                                                  €244.00Price
                                                                                                                  DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                                                      Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                                                      €224.09Price
                                                                                                                      DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                                                          Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                                                          €224.09Price
                                                                                                                          En Stock
                                                                                                                          €23.50 Price
                                                                                                                          En Stock
                                                                                                                          €23.50 Price
                                                                                                                          Kit Revision Dump Valve Recirculation Forge
                                                                                                                              Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                                                                                                                              €23.50Price
                                                                                                                              Kit Revision Dump Valve Recirculation Forge
                                                                                                                                  Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                                                                                                                                  €23.50Price
                                                                                                                                  Durite Admission Clio 2 RSSilicone Air Induction Hose for Renault Clio 2 RS
                                                                                                                                      Stop letting a perished or cracked factory hose choke your Clio 2 RS engine. This reinforced silicone induction hose is a direct replacement for the OEM rubber part, which is notorious for collapsing under vacuum. Available in various colors for a subtle or race-inspired customization , it ensures...
                                                                                                                                      €69.00Price
                                                                                                                                      Durite Admission Clio 2 RSSilicone Air Induction Hose for Renault Clio 2 RS
                                                                                                                                          Stop letting a perished or cracked factory hose choke your Clio 2 RS engine. This reinforced silicone induction hose is a direct replacement for the OEM rubber part, which is notorious for collapsing under vacuum. Available in various colors for a subtle or race-inspired customization , it ensures...
                                                                                                                                          €69.00Price
                                                                                                                                          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
                                                                                                                                                  En Stock
                                                                                                                                                  €150.77 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €150.77 Price
                                                                                                                                                  Bride de turbo Megane N4
                                                                                                                                                      Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                                                      €150.77Price
                                                                                                                                                      Bride de turbo Megane N4
                                                                                                                                                          Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                                                          €150.77Price
                                                                                                                                                          Durite d'admission d'air Forge Motorsport Mégane 3 RSDurite d'admission d'air Forge Motorsport Mégane 3 RS
                                                                                                                                                              Durite d'admission d'air silicone Forge Motorsport qui se fixe en sortie de boite à air. Celle ce permet d'augmenter le débit d'air notamment grâce à un diamètre plus gros ainsi qu'une surface lisse interne. Se monte en lieu et place de celle d'origine Plusieurs couleurs disponibles
                                                                                                                                                              €159.77Price
                                                                                                                                                              Durite d'admission d'air Forge Motorsport Mégane 3 RSDurite d'admission d'air Forge Motorsport Mégane 3 RS
                                                                                                                                                                  Durite d'admission d'air silicone Forge Motorsport qui se fixe en sortie de boite à air. Celle ce permet d'augmenter le débit d'air notamment grâce à un diamètre plus gros ainsi qu'une surface lisse interne. Se monte en lieu et place de celle d'origine Plusieurs couleurs disponibles
                                                                                                                                                                  €159.77Price