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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: Kit Allègement
  • Categories: Préparation intérieure
  • Categories: Support moteur
  • Categories: Suralimentation (Turbo)
Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
      The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
      €29.34Price
      Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
          The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
          €29.34Price
          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
                  €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
                          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
                                          €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
                                                      Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                          Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                          €2.34Price
                                                          Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                              Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                              €2.34Price
                                                              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
                                                                  Flasque palier ( X2.30 )2.3mm Crankshaft Thrust Washer - Renault Clio RS & Megane RS
                                                                      Ensure the longevity of your bottom end with this genuine Renault crankshaft thrust washer pair . Featuring a precise thickness of 2.3 mm , these thrust bearings are essential for controlling crankshaft end play on F7R and F4R engines. A certified OEM part for Clio Williams, Clio 2 RS, Clio 3 RS, and...
                                                                      €43.51Price
                                                                      Flasque palier ( X2.30 )2.3mm Crankshaft Thrust Washer - Renault Clio RS & Megane RS
                                                                          Ensure the longevity of your bottom end with this genuine Renault crankshaft thrust washer pair . Featuring a precise thickness of 2.3 mm , these thrust bearings are essential for controlling crankshaft end play on F7R and F4R engines. A certified OEM part for Clio Williams, Clio 2 RS, Clio 3 RS, and...
                                                                          €43.51Price
                                                                          Dispo selon configuration
                                                                          €65.11 Price
                                                                          Dispo selon configuration
                                                                          €65.11 Price
                                                                          T de raccord de Dump Megane 2 RS
                                                                              T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                              €65.11Price
                                                                              T de raccord de Dump Megane 2 RS
                                                                                  T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                                  €65.11Price
                                                                                  En Stock
                                                                                  €198.25 Price
                                                                                  En Stock
                                                                                  €198.25 Price
                                                                                  Kit Joint Refection moteur Origine Clio 3 RS
                                                                                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                      €198.25Price
                                                                                      Kit Joint Refection moteur Origine Clio 3 RS
                                                                                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                          €198.25Price
                                                                                          Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                              The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                              €16.92Price
                                                                                              Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                                  The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                                  €16.92Price
                                                                                                  Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
                                                                                                      Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
                                                                                                      €20.87Price
                                                                                                      Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
                                                                                                          Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
                                                                                                          €20.87Price
                                                                                                          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
                                                                                                              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
                                                                                                                      Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                          Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                          €17.09Price
                                                                                                                          Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                              Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                              €17.09Price
                                                                                                                              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
                                                                                                                                      Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                                                          Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                                                          €202.56Price
                                                                                                                                          Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                                                              Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                                                              €202.56Price
                                                                                                                                              En Stock
                                                                                                                                              €56.11 Price
                                                                                                                                              En Stock
                                                                                                                                              €56.11 Price
                                                                                                                                              Électrovanne pilotée Megane 2 RSTurbo Boost Solenoid Valve Mégane 2 RS
                                                                                                                                                  Turbo Boost Control Solenoid Valve – Renault Mégane 2 RS The turbo boost control solenoid valve, reference 8200702990 , is an engine management component designed to regulate the turbocharger...
                                                                                                                                                  €56.11Price
                                                                                                                                                  Électrovanne pilotée Megane 2 RSTurbo Boost Solenoid Valve Mégane 2 RS
                                                                                                                                                      Turbo Boost Control Solenoid Valve – Renault Mégane 2 RS The turbo boost control solenoid valve, reference 8200702990 , is an engine management component designed to regulate the turbocharger...
                                                                                                                                                      €56.11Price
                                                                                                                                                      Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                                                                          Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                                                                          €14.95Price
                                                                                                                                                          Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                                                                              Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                                                                              €14.95Price
                                                                                                                                                              Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                                                                                                                                  Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                                                                                                                                  €44.99Price
                                                                                                                                                                  Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                                                                                                                                      Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                                                                                                                                      €44.99Price
                                                                                                                                                                      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
                                                                                                                                                                              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
                                                                                                                                                                                      €224.35 Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €224.35 Price
                                                                                                                                                                                      Kit Joint Refection moteur Origine Clio 2 RS
                                                                                                                                                                                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                                                                                                                                                                          €224.35Price
                                                                                                                                                                                          Kit Joint Refection moteur Origine Clio 2 RS
                                                                                                                                                                                              Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                                                                                                                                                                              €224.35Price