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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)
En Stock
€25.25 Price
En Stock
€25.25 Price
Accessory Belt for AC Delete Kit - Alpine A110
      This Specific Accessory Belt is an essential component when installing an Air Conditioning Delete Kit on your Alpine A110 . Its length is adjusted to bypass the air conditioning compressor that has been removed. A high-quality part, it guarantees the correct...
      €25.25Price
      Accessory Belt for AC Delete Kit - Alpine A110
          This Specific Accessory Belt is an essential component when installing an Air Conditioning Delete Kit on your Alpine A110 . Its length is adjusted to bypass the air conditioning compressor that has been removed. A high-quality part, it guarantees the correct...
          €25.25Price
          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
                                                                          Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                                                              The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                                                              €191.53Price
                                                                              Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                                                                  The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                                                                  €191.53Price
                                                                                  En Stock
                                                                                  €81.65 Price
                                                                                  En Stock
                                                                                  €81.65 Price
                                                                                  Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                                      Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                                      €81.65Price
                                                                                      Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                                          Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                                          €81.65Price
                                                                                          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
                                                                                                                          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
                                                                                                                              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
                                                                                                                                      €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