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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: Support moteur
  • Categories: Suralimentation (Turbo)
Dispo selon configuration
€330.87 €367.63 Regular price -€36.76 off Price
Dispo selon configuration
€330.87 €367.63 Regular price -€36.76 off Price
Kit Dump Valve HKS Megane 3 RSKit Dump Valve HKS Megane 3 RS
    • Pack
    Kit Dump Valve HKS Megane 3 RS Le kit est complet et permet donc de monter une dump HKS sans necessité d'acheter d'autres pieces.
    €330.87€367.63Regular price-€36.76 offPrice
    Kit Dump Valve HKS Megane 3 RSKit Dump Valve HKS Megane 3 RS
      • Pack
      Kit Dump Valve HKS Megane 3 RS Le kit est complet et permet donc de monter une dump HKS sans necessité d'acheter d'autres pieces.
      €330.87€367.63Regular price-€36.76 offPrice
      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
              €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
                      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
                              Dispo selon configuration
                              €6.00 Price
                              Dispo selon configuration
                              €6.00 Price
                              Tuyau de dépressionTuyau de dépression
                                  Tuyau de depression de diamètre 4mm. Sert généralement pour l'installation de Dump Valve. Prix au metre
                                  €6.00Price
                                  Tuyau de dépressionTuyau de dépression
                                      Tuyau de depression de diamètre 4mm. Sert généralement pour l'installation de Dump Valve. Prix au metre
                                      €6.00Price
                                      En Stock
                                      €66.99 Price
                                      En Stock
                                      €66.99 Price
                                      Injecteur Clio 3 RS et X85 Cup
                                          The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                          €66.99Price
                                          Injecteur Clio 3 RS et X85 Cup
                                              The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                              €66.99Price
                                              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
                                                      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
                                                              €790.00 Price
                                                              En Stock
                                                              €790.00 Price
                                                              Echangeur Wagner Megane 3 RSEchangeur Wagner Megane 3 RS
                                                                  Wagner Tuning Intercooler for Renault Mégane 3 RS: Boost your sports car's performance with this high-performance intercooler. Designed to efficiently cool the turbocharged air, it enhances your engine's power, torque, and reliability, while also giving your vehicle a sportier look.
                                                                  €790.00Price
                                                                  Echangeur Wagner Megane 3 RSEchangeur Wagner Megane 3 RS
                                                                      Wagner Tuning Intercooler for Renault Mégane 3 RS: Boost your sports car's performance with this high-performance intercooler. Designed to efficiently cool the turbocharged air, it enhances your engine's power, torque, and reliability, while also giving your vehicle a sportier look.
                                                                      €790.00Price
                                                                      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
                                                                              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
                                                                                      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
                                                                                                      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
                                                                                                              Dump Valve Megane 3 RS avec Kit de montageDump Valve Megane 3 RS avec Kit de montage
                                                                                                                  Kit Dump Valve Forge. Circuit ouvert. Ce mode de fonctionnement est reconnaissable au PSSCHHIIIITTT qui se laisse entendre lors du changement de rapport Le kit Comprend, la Dump Valve, 2 colliers, un raccord inox, et un tube coudé et le bouchon nécessaire à boucher le trou lors de la suppression de la dump valve d'origine (pas present dans tous les kits que l'on trouve sur le net). Idéal sur...
                                                                                                                  €261.86Price
                                                                                                                  Dump Valve Megane 3 RS avec Kit de montageDump Valve Megane 3 RS avec Kit de montage
                                                                                                                      Kit Dump Valve Forge. Circuit ouvert. Ce mode de fonctionnement est reconnaissable au PSSCHHIIIITTT qui se laisse entendre lors du changement de rapport Le kit Comprend, la Dump Valve, 2 colliers, un raccord inox, et un tube coudé et le bouchon nécessaire à boucher le trou lors de la suppression de la dump valve d'origine (pas present dans tous les kits que l'on trouve sur le net). Idéal sur...
                                                                                                                      €261.86Price
                                                                                                                      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
                                                                                                                              €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
                                                                                                                                      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
                                                                                                                                              En Stock
                                                                                                                                              €84.00 Price
                                                                                                                                              En Stock
                                                                                                                                              €84.00 Price
                                                                                                                                              Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                                                                                                                                  Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                                                                                                                                  €84.00Price
                                                                                                                                                  Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                                                                                                                                      Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                                                                                                                                      €84.00Price
                                                                                                                                                      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
                                                                                                                                                              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
                                                                                                                                                                      Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                                                                                                                                                          Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                                                                                                                                                          €55.88Price
                                                                                                                                                                          Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                                                                                                                                                              Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                                                                                                                                                              €55.88Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €71.22 €79.33 Regular price -€8.11 off Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €71.22 €79.33 Regular price -€8.11 off Price
                                                                                                                                                                              Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                  Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                                                                                                                                                                  €71.22€79.33Regular price-€8.11 offPrice
                                                                                                                                                                                  Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                      Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                                                                                                                                                                      €71.22€79.33Regular price-€8.11 offPrice
                                                                                                                                                                                      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