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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: Préparation intérieure
  • Categories: Refroidissement
  • Categories: Suralimentation (Turbo)
Joint liaison tubulure échangeur / papillon Megane 3 RS
      Joint liaison tubulure échangeur / papillon Megane 3 RS
      €9.36Price
      Joint liaison tubulure échangeur / papillon Megane 3 RS
          Joint liaison tubulure échangeur / papillon Megane 3 RS
          €9.36Price
          En Stock
          €27.42 Price
          En Stock
          €27.42 Price
          Support bague étanchéité Twingo 2 RS et WindSupport bague étanchéité Twingo 2 RS et Wind
              Support bague étanchéité Twingo 2 RS et Wind Référence: 7700105179
              €27.42Price
              Support bague étanchéité Twingo 2 RS et WindSupport bague étanchéité Twingo 2 RS et Wind
                  Support bague étanchéité Twingo 2 RS et Wind Référence: 7700105179
                  €27.42Price
                  En Stock
                  €32.92 Price
                  En Stock
                  €32.92 Price
                  Poussoir contre came rouleau Twingo 2 RS et WindPoussoir contre came rouleau Twingo 2 RS et Wind
                      Poussoir contre came rouleau Twingo 2 RS et Wind Référence: 8200320561
                      €32.92Price
                      Poussoir contre came rouleau Twingo 2 RS et WindPoussoir contre came rouleau Twingo 2 RS et Wind
                          Poussoir contre came rouleau Twingo 2 RS et Wind Référence: 8200320561
                          €32.92Price
                          En Stock
                          €15.43 Price
                          En Stock
                          €15.43 Price
                          Centreur boite de vitesse et pompe à huileCentreur boite de vitesse et pompe à huile
                              Centreur boite de vitesse et pompe à huile Nous contacter en cas de doute sur la compatibilité avec votre véhicule Référence: 8200582334
                              €15.43Price
                              Centreur boite de vitesse et pompe à huileCentreur boite de vitesse et pompe à huile
                                  Centreur boite de vitesse et pompe à huile Nous contacter en cas de doute sur la compatibilité avec votre véhicule Référence: 8200582334
                                  €15.43Price
                                  En Stock
                                  €134.58 Price
                                  En Stock
                                  €134.58 Price
                                  Capteur arbre à cames (déphasage) Twingo 2 RS y compris R1 et R2Camshaft Timing Solenoid – Twingo 2 RS R1 R2
                                      Camshaft timing solenoid valve designed for the Renault Twingo 2 RS , including Twingo R1 and Twingo R2 competition versions. It plays an important role in controlling the engine's variable camshaft timing system. Suitable for replacing a worn or faulty...
                                      €134.58Price
                                      Capteur arbre à cames (déphasage) Twingo 2 RS y compris R1 et R2Camshaft Timing Solenoid – Twingo 2 RS R1 R2
                                          Camshaft timing solenoid valve designed for the Renault Twingo 2 RS , including Twingo R1 and Twingo R2 competition versions. It plays an important role in controlling the engine's variable camshaft timing system. Suitable for replacing a worn or faulty...
                                          €134.58Price
                                          En Stock
                                          €556.99 Price
                                          En Stock
                                          €556.99 Price
                                          Carter turbo-compresseur modifié Megane N4Carter turbo-compresseur modifié Megane N4
                                              Carter turbo-compresseur modifié Megane N4 Référence: 7711167373
                                              €556.99Price
                                              Carter turbo-compresseur modifié Megane N4Carter turbo-compresseur modifié Megane N4
                                                  Carter turbo-compresseur modifié Megane N4 Référence: 7711167373
                                                  €556.99Price
                                                  Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                      €187.01Price
                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                          Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                          €187.01Price
                                                          En Stock
                                                          €106.16 Price
                                                          En Stock
                                                          €106.16 Price
                                                          Tuyau huile turbo Megane RS
                                                              Protect your turbocharger's health with this genuine Renault turbo oil feed pipe . Designed for the Renault Megane 2 RS and Megane 3 RS , this line ensures optimal lubrication of the turbine shaft. As this is an evolved version of the original manufacturer part, a specific mounting adapter ...
                                                              €106.16Price
                                                              Tuyau huile turbo Megane RS
                                                                  Protect your turbocharger's health with this genuine Renault turbo oil feed pipe . Designed for the Renault Megane 2 RS and Megane 3 RS , this line ensures optimal lubrication of the turbine shaft. As this is an evolved version of the original manufacturer part, a specific mounting adapter ...
                                                                  €106.16Price
                                                                  Gicleur Piston 1-3 Clio 2 RS 182 et Clio 3 RS
                                                                      Protect the lower F4R engine of your Clio 2 RS 182, Clio 3 RS, or Megane 2 RS with this genuine Renault oil sprayer (oil jet) for cylinders 1 and 3. A critical component for piston cooling and lubrication, it guarantees the reliability and longevity of your engine. Don't neglect the protection of your F4R.
                                                                      €14.65Price
                                                                      Gicleur Piston 1-3 Clio 2 RS 182 et Clio 3 RS
                                                                          Protect the lower F4R engine of your Clio 2 RS 182, Clio 3 RS, or Megane 2 RS with this genuine Renault oil sprayer (oil jet) for cylinders 1 and 3. A critical component for piston cooling and lubrication, it guarantees the reliability and longevity of your engine. Don't neglect the protection of your F4R.
                                                                          €14.65Price
                                                                          En Stock
                                                                          €29.62 Price
                                                                          En Stock
                                                                          €29.62 Price
                                                                          Vis creuse tuyauterie alimentation huile Megane RS
                                                                              Vis creuse tuyauterie alimentation huile Megane 2 et 3 RS
                                                                              €29.62Price
                                                                              Vis creuse tuyauterie alimentation huile Megane RS
                                                                                  Vis creuse tuyauterie alimentation huile Megane 2 et 3 RS
                                                                                  €29.62Price
                                                                                  En Stock
                                                                                  €178.20 Price
                                                                                  En Stock
                                                                                  €178.20 Price
                                                                                  Plaque reniflard Clio 2 RS 172
                                                                                      Plaque de reniflard taillé massé venant en lieu et place de la plaque d'origine Ajout un raccord Dash permettant de venir connecter directement un recuperateur de vapeur d'huile. Cette piece est un serieux atout pour les véhicules ayant modifié le collecteur d'admission d'origine. Produit a completer avec un joint Loctite 5980.
                                                                                      €178.20Price
                                                                                      Plaque reniflard Clio 2 RS 172
                                                                                          Plaque de reniflard taillé massé venant en lieu et place de la plaque d'origine Ajout un raccord Dash permettant de venir connecter directement un recuperateur de vapeur d'huile. Cette piece est un serieux atout pour les véhicules ayant modifié le collecteur d'admission d'origine. Produit a completer avec un joint Loctite 5980.
                                                                                          €178.20Price
                                                                                          En Stock
                                                                                          €126.80 €181.14 Regular price -30% off Price
                                                                                          En Stock
                                                                                          €126.80 €181.14 Regular price -30% off Price
                                                                                          GMV (Ventilateur) type chauffo Twingo RS et R1
                                                                                              GMV (Ventilateur) type chauffo Twingo RS et R1 Référence: 7711162740 - 8200066098 Egalement compatible avec d'autres motorisations
                                                                                              €126.80€181.14Regular price-30% offPrice
                                                                                              GMV (Ventilateur) type chauffo Twingo RS et R1
                                                                                                  GMV (Ventilateur) type chauffo Twingo RS et R1 Référence: 7711162740 - 8200066098 Egalement compatible avec d'autres motorisations
                                                                                                  €126.80€181.14Regular price-30% offPrice
                                                                                                  En Stock
                                                                                                  €11.53 Price
                                                                                                  En Stock
                                                                                                  €11.53 Price
                                                                                                  Demi coussinet rainurés jaune vilebrequin K4M 854Demi coussinet rainurés jaune vilebrequin K4M 854
                                                                                                      Demi coussinet rainurés jaune vilebrequin K4M 854
                                                                                                      €11.53Price
                                                                                                      Demi coussinet rainurés jaune vilebrequin K4M 854Demi coussinet rainurés jaune vilebrequin K4M 854
                                                                                                          Demi coussinet rainurés jaune vilebrequin K4M 854
                                                                                                          €11.53Price
                                                                                                          Dispo selon configuration
                                                                                                          €379.68 €399.66 Regular price -€19.98 off Price
                                                                                                          Dispo selon configuration
                                                                                                          €379.68 €399.66 Regular price -€19.98 off Price
                                                                                                          Kit Dump Valve HKS Megane 2 RS
                                                                                                            • Pack
                                                                                                            Kit complet permettant l'installation d'une dump valve HKS sans nécessiter de produit additionnel.
                                                                                                            €379.68€399.66Regular price-€19.98 offPrice
                                                                                                            Kit Dump Valve HKS Megane 2 RS
                                                                                                              • Pack
                                                                                                              Kit complet permettant l'installation d'une dump valve HKS sans nécessiter de produit additionnel.
                                                                                                              €379.68€399.66Regular price-€19.98 offPrice
                                                                                                              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
                                                                                                                  Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                                                      Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                                                      €265.93Price
                                                                                                                      Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                                                          Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                                                          €265.93Price
                                                                                                                          En Stock
                                                                                                                          €133.39 Price
                                                                                                                          En Stock
                                                                                                                          €133.39 Price
                                                                                                                          Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                                                                                                                              Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                              €133.39Price
                                                                                                                              Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                                                                                                                                  Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                  €133.39Price
                                                                                                                                  Dispo selon configuration
                                                                                                                                  €169.00 €209.02 Regular price -€40.02 off Price
                                                                                                                                  Dispo selon configuration
                                                                                                                                  €169.00 €209.02 Regular price -€40.02 off Price
                                                                                                                                  COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                                                                                                                                    • Pack
                                                                                                                                    Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                                                                                                                                    €169.00€209.02Regular price-€40.02 offPrice
                                                                                                                                    COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                                                                                                                                      • Pack
                                                                                                                                      Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                                                                                                                                      €169.00€209.02Regular price-€40.02 offPrice
                                                                                                                                      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
                                                                                                                                              Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                                                                  Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                                                                  €4.72Price
                                                                                                                                                  Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                                                                      Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                                                                      €4.72Price
                                                                                                                                                      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
                                                                                                                                                              Collection de Ségments (X82.70)
                                                                                                                                                                  Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                                                                                                                                  €37.55Price
                                                                                                                                                                  Collection de Ségments (X82.70)
                                                                                                                                                                      Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                                                                                                                                      €37.55Price
                                                                                                                                                                      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
                                                                                                                                                                              Vis de bielle origine
                                                                                                                                                                                  Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                                                                                                                                                                  €8.56Price
                                                                                                                                                                                  Vis de bielle origine
                                                                                                                                                                                      Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                                                                                                                                                                      €8.56Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €122.00 Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €122.00 Price
                                                                                                                                                                                      ARP Uprated Rod Bolts | Renault Clio & Megane RS
                                                                                                                                                                                          Protect your bottom end assembly against high-RPM failure with this premium Uprated ARP Rod Bolts Kit for Renault Clio 16S, Williams, Clio 2 3 RS, and Megane 2 3 RS , commercialized under the international part number ARP-216-6301 . Forged from premium ARP...
                                                                                                                                                                                          €122.00Price
                                                                                                                                                                                          ARP Uprated Rod Bolts | Renault Clio & Megane RS
                                                                                                                                                                                              Protect your bottom end assembly against high-RPM failure with this premium Uprated ARP Rod Bolts Kit for Renault Clio 16S, Williams, Clio 2 3 RS, and Megane 2 3 RS , commercialized under the international part number ARP-216-6301 . Forged from premium ARP...
                                                                                                                                                                                              €122.00Price
                                                                                                                                                                                              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
                                                                                                                                                                                                      Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                                                                                                                                          Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                                                                                                                                          €36.80Price
                                                                                                                                                                                                          Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                                                                                                                                              Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                                                                                                                                              €36.80Price