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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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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
          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
                  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
                          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
                                  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
                                          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
                                                  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
                                                          En Stock
                                                          €10.57 €13.93 Regular price -€3.36 off Price
                                                          En Stock
                                                          €10.57 €13.93 Regular price -€3.36 off Price
                                                          Joint Collecteur Admission Clio 2 RS
                                                              Ensure vital engine sealing with this genuine Renault intake manifold gasket for the Clio 2 RS (172 and 182hp). This authentic component guarantees a perfect junction between the cylinder head and your manifold, preventing any parasitic air leaks that could degrade the performance of your F4R engine . Do not...
                                                              €10.57€13.93Regular price-€3.36 offPrice
                                                              Joint Collecteur Admission Clio 2 RS
                                                                  Ensure vital engine sealing with this genuine Renault intake manifold gasket for the Clio 2 RS (172 and 182hp). This authentic component guarantees a perfect junction between the cylinder head and your manifold, preventing any parasitic air leaks that could degrade the performance of your F4R engine . Do not...
                                                                  €10.57€13.93Regular price-€3.36 offPrice
                                                                  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
                                                                          €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
                                                                                  €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
                                                                                          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
                                                                                                  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
                                                                                                          €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
                                                                                                                  En Stock
                                                                                                                  €25.61 Price
                                                                                                                  En Stock
                                                                                                                  €25.61 Price
                                                                                                                  Filtre à air origine Clio 2 RS
                                                                                                                      Filtre à air origine Clio 2 RS Véritable produit d'origine Ne convient pas à la boite a air cylindrique des clio RS1
                                                                                                                      €25.61Price
                                                                                                                      Filtre à air origine Clio 2 RS
                                                                                                                          Filtre à air origine Clio 2 RS Véritable produit d'origine Ne convient pas à la boite a air cylindrique des clio RS1
                                                                                                                          €25.61Price
                                                                                                                          Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                                                                                                              Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                                                                                                              €146.16Price
                                                                                                                              Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                                                                                                                  Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                                                                                                                  €146.16Price
                                                                                                                                  Câble accélérateur Clio 3 X85 Cup
                                                                                                                                      Don't let a seized cable compromise your responsiveness on the track. This official Renault Sport throttle cable is specifically designed for the Renault Clio 3 X85 Cup . Genuine manufacturer part (Reference 7711160160). High-resistance design for intensive competition ...
                                                                                                                                      €52.69Price
                                                                                                                                      Câble accélérateur Clio 3 X85 Cup
                                                                                                                                          Don't let a seized cable compromise your responsiveness on the track. This official Renault Sport throttle cable is specifically designed for the Renault Clio 3 X85 Cup . Genuine manufacturer part (Reference 7711160160). High-resistance design for intensive competition ...
                                                                                                                                          €52.69Price
                                                                                                                                          En Stock
                                                                                                                                          €1.00 Price
                                                                                                                                          En Stock
                                                                                                                                          €1.00 Price
                                                                                                                                          Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                              Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                              €1.00Price
                                                                                                                                              Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                                  Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                                  €1.00Price
                                                                                                                                                  Interrupteur coup de poing Megane N4
                                                                                                                                                      Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                                                                                      €20.30Price
                                                                                                                                                      Interrupteur coup de poing Megane N4
                                                                                                                                                          Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                                                                                          €20.30Price
                                                                                                                                                          En Stock
                                                                                                                                                          €546.20 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €546.20 Price
                                                                                                                                                          Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                                              Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                                              €546.20Price
                                                                                                                                                              Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                                                  Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                                                  €546.20Price