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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)
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
                  En Stock
                  €251.47 Price
                  En Stock
                  €251.47 Price
                  Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                      Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                      €251.47Price
                      Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                          Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                          €251.47Price
                          En Stock
                          €244.00 Price
                          En Stock
                          €244.00 Price
                          Wasegate Forge Megane RS
                              Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                              €244.00Price
                              Wasegate Forge Megane RS
                                  Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                                  €244.00Price
                                  High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                      Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                      €10.93Price
                                      High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                          Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                          €10.93Price
                                          En Stock
                                          €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
                                                  Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                      Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                      €140.75Price
                                                      Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                          Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                          €140.75Price
                                                          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
                                                                  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
                                                                          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
                                                                              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
                                                                                      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
                                                                                              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
                                                                                                      Dump Valve ouverte Forge Megane 4 RSDump Valve ouverte Forge Megane 4 RS
                                                                                                          Dump Valve ouverte Forge Megane 4 RS Permet de faire le bruit de decharge du turbo fortement apprécié.
                                                                                                          €299.00Price
                                                                                                          Dump Valve ouverte Forge Megane 4 RSDump Valve ouverte Forge Megane 4 RS
                                                                                                              Dump Valve ouverte Forge Megane 4 RS Permet de faire le bruit de decharge du turbo fortement apprécié.
                                                                                                              €299.00Price
                                                                                                              En Stock
                                                                                                              €220.69 Price
                                                                                                              En Stock
                                                                                                              €220.69 Price
                                                                                                              Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                                  Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                                  €220.69Price
                                                                                                                  Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                                      Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                                      €220.69Price
                                                                                                                      En Stock
                                                                                                                      €2.08 Price
                                                                                                                      En Stock
                                                                                                                      €2.08 Price
                                                                                                                      Collier serrage inox (durite) diametre 60-80mmCollier serrage inox (durite) diametre 60-80mm
                                                                                                                          Collier serrage inox (durite) diametre 60-80mm Vendu à l'unité
                                                                                                                          €2.08Price
                                                                                                                          Collier serrage inox (durite) diametre 60-80mmCollier serrage inox (durite) diametre 60-80mm
                                                                                                                              Collier serrage inox (durite) diametre 60-80mm Vendu à l'unité
                                                                                                                              €2.08Price
                                                                                                                              En Stock
                                                                                                                              €27.47 Price
                                                                                                                              En Stock
                                                                                                                              €27.47 Price
                                                                                                                              Joint de turbo sur collecteur Megane 2 RS Megane 3 RS
                                                                                                                                  Optimize your F4RT engine's sealing with this genuine RENAULT turbocharger to manifold gasket . Specifically designed for the Renault Megane 2 RS and Megane 3 RS , it is the essential component to maintain nominal boost pressure. Do not risk an exhaust leak that would degrade your performance and the...
                                                                                                                                  €27.47Price
                                                                                                                                  Joint de turbo sur collecteur Megane 2 RS Megane 3 RS
                                                                                                                                      Optimize your F4RT engine's sealing with this genuine RENAULT turbocharger to manifold gasket . Specifically designed for the Renault Megane 2 RS and Megane 3 RS , it is the essential component to maintain nominal boost pressure. Do not risk an exhaust leak that would degrade your performance and the...
                                                                                                                                      €27.47Price
                                                                                                                                      Durite d'induction (admission) Forge Motorsport Megane 4 RSDurite d'induction (admission) Forge Motorsport Megane 4 RS
                                                                                                                                          Durite d'induction (admission) Forge Motorsport Megane 4 RS Produit de qualité permettant de limiter les perturbations.
                                                                                                                                          €118.31Price
                                                                                                                                          Durite d'induction (admission) Forge Motorsport Megane 4 RSDurite d'induction (admission) Forge Motorsport Megane 4 RS
                                                                                                                                              Durite d'induction (admission) Forge Motorsport Megane 4 RS Produit de qualité permettant de limiter les perturbations.
                                                                                                                                              €118.31Price
                                                                                                                                              En Stock
                                                                                                                                              €1.00 Price
                                                                                                                                              En Stock
                                                                                                                                              €1.00 Price
                                                                                                                                              Collier serrage inox (durite) diametre 8-12mm
                                                                                                                                                  Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                                                                                                                                  €1.00Price
                                                                                                                                                  Collier serrage inox (durite) diametre 8-12mm
                                                                                                                                                      Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                                                                                                                                      €1.00Price
                                                                                                                                                      En Stock
                                                                                                                                                      €116.83 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €116.83 Price
                                                                                                                                                      Jeu de segments pour piston origine Megane 3 RS
                                                                                                                                                          Jeu de segments pour piston origine Megane 3 RS 1 Jeu comprend le necessaire pour 1 piston
                                                                                                                                                          €116.83Price
                                                                                                                                                          Jeu de segments pour piston origine Megane 3 RS
                                                                                                                                                              Jeu de segments pour piston origine Megane 3 RS 1 Jeu comprend le necessaire pour 1 piston
                                                                                                                                                              €116.83Price
                                                                                                                                                              Dump Valve GFB DV+ - Diverter Valve Clio 4 RS - Megane 4 RS et Megane 4 GTGFB DV+ Diverter Valve - Renault Clio 4 RS / Megane 4 GT / Megane 4 RS / Alpine A110
                                                                                                                                                                  Stop losing your turbo boost! The GFB DV+ Dump Valve (Diverter Valve) is the essential upgrade for the reliability and responsiveness of your Renault Sport 1.6T and 1.8T engine (Clio 4 RS, Megane 4 GT, Megane 4 RS, Alpine A110). Retain the factory electronics...
                                                                                                                                                                  €127.86Price
                                                                                                                                                                  Dump Valve GFB DV+ - Diverter Valve Clio 4 RS - Megane 4 RS et Megane 4 GTGFB DV+ Diverter Valve - Renault Clio 4 RS / Megane 4 GT / Megane 4 RS / Alpine A110
                                                                                                                                                                      Stop losing your turbo boost! The GFB DV+ Dump Valve (Diverter Valve) is the essential upgrade for the reliability and responsiveness of your Renault Sport 1.6T and 1.8T engine (Clio 4 RS, Megane 4 GT, Megane 4 RS, Alpine A110). Retain the factory electronics...
                                                                                                                                                                      €127.86Price
                                                                                                                                                                      Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                                                                                                                                                                          Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                                                                                                                                                                          €89.65Price
                                                                                                                                                                          Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                                                                                                                                                                              Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                                                                                                                                                                              €89.65Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €5.63 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €5.63 Price
                                                                                                                                                                              Joint de queue de soupape
                                                                                                                                                                                  Joint de queue de soupape Attention pour Megane 3 RS les joints sont différents entre admission et échappement Vendu à l'unité
                                                                                                                                                                                  €5.63Price
                                                                                                                                                                                  Joint de queue de soupape
                                                                                                                                                                                      Joint de queue de soupape Attention pour Megane 3 RS les joints sont différents entre admission et échappement Vendu à l'unité
                                                                                                                                                                                      €5.63Price
                                                                                                                                                                                      Kit durites de turbo Forge Motorsport Megane 4 RSForge Motorsport Turbo Hose Kit - Renault Megane 4 RS
                                                                                                                                                                                          Secure your boost pressure consistency and eliminate intake charge drops with the high-performance Forge Motorsport Turbo Hose Kit for the Renault Megane 4 RS . This premium set of uprated silicone boost couplers replaces the restrictive factory rubber lines to optimize...
                                                                                                                                                                                          €294.76Price
                                                                                                                                                                                          Kit durites de turbo Forge Motorsport Megane 4 RSForge Motorsport Turbo Hose Kit - Renault Megane 4 RS
                                                                                                                                                                                              Secure your boost pressure consistency and eliminate intake charge drops with the high-performance Forge Motorsport Turbo Hose Kit for the Renault Megane 4 RS . This premium set of uprated silicone boost couplers replaces the restrictive factory rubber lines to optimize...
                                                                                                                                                                                              €294.76Price
                                                                                                                                                                                              Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RSLot de 2 bouchons silicone pour suppression résonateur Clio 4 RS
                                                                                                                                                                                                  Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RS Uniquement compatible avec la cold side AIRTEC Si vous disposez encore de la durite d'origine, consultez nos autres bouchons
                                                                                                                                                                                                  €58.32Price
                                                                                                                                                                                                  Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RSLot de 2 bouchons silicone pour suppression résonateur Clio 4 RS
                                                                                                                                                                                                      Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RS Uniquement compatible avec la cold side AIRTEC Si vous disposez encore de la durite d'origine, consultez nos autres bouchons
                                                                                                                                                                                                      €58.32Price
                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                      €130.37 Price
                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                      €130.37 Price
                                                                                                                                                                                                      Capteur pression de suralimentation Megane 3 RS
                                                                                                                                                                                                          Capteur pression de suralimentation Megane 3 RS Véritable produit d'origine
                                                                                                                                                                                                          €130.37Price
                                                                                                                                                                                                          Capteur pression de suralimentation Megane 3 RS
                                                                                                                                                                                                              Capteur pression de suralimentation Megane 3 RS Véritable produit d'origine
                                                                                                                                                                                                              €130.37Price
                                                                                                                                                                                                              Sonde pression Twingo R2New Genuine Renault Sport Oil Pressure Sensor - Clio R3 & Twingo R2
                                                                                                                                                                                                                  This new oil pressure sensor , from the Renault Sport competition catalog , is a vital safety part for the rally engines of the Renault Clio R3 and Twingo R2 . It is essential for monitoring lubrication and thereby preventing catastrophic engine failures caused by a lack or drop in oil pressure.
                                                                                                                                                                                                                  €195.78Price
                                                                                                                                                                                                                  Sonde pression Twingo R2New Genuine Renault Sport Oil Pressure Sensor - Clio R3 & Twingo R2
                                                                                                                                                                                                                      This new oil pressure sensor , from the Renault Sport competition catalog , is a vital safety part for the rally engines of the Renault Clio R3 and Twingo R2 . It is essential for monitoring lubrication and thereby preventing catastrophic engine failures caused by a lack or drop in oil pressure.
                                                                                                                                                                                                                      €195.78Price