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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: Circuit d'air
  • Categories: Suralimentation (Turbo)
En Stock
€149.05 €212.93 Regular price -30% off Price
En Stock
€149.05 €212.93 Regular price -30% off Price
Jeu de Bougies Renault Clio 4 RS
      Set of 4 spark plugs for...
      €149.05€212.93Regular price-30% offPrice
      Jeu de Bougies Renault Clio 4 RS
          Set of 4 spark plugs for...
          €149.05€212.93Regular price-30% offPrice
          En Stock
          €88.16 Price
          En Stock
          €88.16 Price
          Bougies Iridium Denso Megane RS
              Denso Iridium Spark Plugs for Mégane RS - Maximum Performance and Reliability Boost your Mégane RS's performance with Denso Iridium spark plugs, designed to deliver a stronger spark and more efficient combustion. With their iridium electrode, these spark plugs ensure better engine responsiveness, optimized fuel consumption, and increased longevity compared to standard plugs. ...
              €88.16Price
              Bougies Iridium Denso Megane RS
                  Denso Iridium Spark Plugs for Mégane RS - Maximum Performance and Reliability Boost your Mégane RS's performance with Denso Iridium spark plugs, designed to deliver a stronger spark and more efficient combustion. With their iridium electrode, these spark plugs ensure better engine responsiveness, optimized fuel consumption, and increased longevity compared to standard plugs. ...
                  €88.16Price
                  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
                          Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                            • Pack
                            Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                            €269.74Price
                            Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                              • Pack
                              Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                              €269.74Price
                              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
                                      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
                                              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
                                                      €37.52 Price
                                                      En Stock
                                                      €37.52 Price
                                                      Raccord 90° de rampe d'injection Clio Gr N
                                                          Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                          €37.52Price
                                                          Raccord 90° de rampe d'injection Clio Gr N
                                                              Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                              €37.52Price
                                                              Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                                                  Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                                                  €138.05Price
                                                                  Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                                                      Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                                                      €138.05Price
                                                                      Dispo selon configuration
                                                                      €925.00 Price
                                                                      Dispo selon configuration
                                                                      €925.00 Price
                                                                      Echangeur Forge Clio 4 RSEchangeur Forge Clio 4 RS
                                                                          La dernière génération 1.6 turbo Renault Clio dispose d'un echangeur monté verticalement. L'endroit n' est pas ideal et trop petit pour la voiture standard. La solution pour les voitures Renault Clio Cup était de rénover l'ensemble du réseau avec un refroidissement par pulvérisation d'eau, mais ce fut insuffisant sur la piste après quelques tours. Notre solution était un échangeur monté...
                                                                          €925.00Price
                                                                          Echangeur Forge Clio 4 RSEchangeur Forge Clio 4 RS
                                                                              La dernière génération 1.6 turbo Renault Clio dispose d'un echangeur monté verticalement. L'endroit n' est pas ideal et trop petit pour la voiture standard. La solution pour les voitures Renault Clio Cup était de rénover l'ensemble du réseau avec un refroidissement par pulvérisation d'eau, mais ce fut insuffisant sur la piste après quelques tours. Notre solution était un échangeur monté...
                                                                              €925.00Price
                                                                              En Stock
                                                                              €17.45 Price
                                                                              En Stock
                                                                              €17.45 Price
                                                                              Support inférieur écope boitier filtre Twingo R2
                                                                                  Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                  €17.45Price
                                                                                  Support inférieur écope boitier filtre Twingo R2
                                                                                      Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                      €17.45Price
                                                                                      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
                                                                                              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
                                                                                                      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
                                                                                                              €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
                                                                                                                      En Stock
                                                                                                                      €36.05 Price
                                                                                                                      En Stock
                                                                                                                      €36.05 Price
                                                                                                                      Jeu de Bougies Renault Clio 16S
                                                                                                                          Jeu de Bougies Renault (fabriqué par NGK) (Vendu par 4) pour Clio 16S Produit d'origine Renault
                                                                                                                          €36.05Price
                                                                                                                          Jeu de Bougies Renault Clio 16S
                                                                                                                              Jeu de Bougies Renault (fabriqué par NGK) (Vendu par 4) pour Clio 16S Produit d'origine Renault
                                                                                                                              €36.05Price
                                                                                                                              En Stock
                                                                                                                              €178.04 Price
                                                                                                                              En Stock
                                                                                                                              €178.04 Price
                                                                                                                              Pompe à Essence Clio 2 RS et X65 Cup
                                                                                                                                  Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                                                                                                  €178.04Price
                                                                                                                                  Pompe à Essence Clio 2 RS et X65 Cup
                                                                                                                                      Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                                                                                                      €178.04Price
                                                                                                                                      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
                                                                                                                                              €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
                                                                                                                                                      €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