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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: Alimentation
  • Categories: Kit Allègement
  • Categories: Suralimentation (Turbo)
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
          En Stock
          €122.62 Price
          En Stock
          €122.62 Price
          Batterie sèche 12V-24Ah
              Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
              €122.62Price
              Batterie sèche 12V-24Ah
                  Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                  €122.62Price
                  En Stock
                  €220.46 Price
                  En Stock
                  €220.46 Price
                  Dump Valve Forge Recirculation Megane RS
                      Maximize your engine's responsiveness with the Forge Motorsport Recirculation Dump Valve for Renault Megane 2 RS and Megane 3 RS (reference FMDVRMR ). Unlike atmospheric blow-off valves, this recirculation version diverts air back into the intake system to...
                      €220.46Price
                      Dump Valve Forge Recirculation Megane RS
                          Maximize your engine's responsiveness with the Forge Motorsport Recirculation Dump Valve for Renault Megane 2 RS and Megane 3 RS (reference FMDVRMR ). Unlike atmospheric blow-off valves, this recirculation version diverts air back into the intake system to...
                          €220.46Price
                          Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                              Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                              €138.05Price
                              Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                  Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                  €138.05Price
                                  En Stock
                                  €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
                                          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
                                              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
                                                      €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
                                                              En Stock
                                                              €84.00 Price
                                                              En Stock
                                                              €84.00 Price
                                                              Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                                                  Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                                                  €84.00Price
                                                                  Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                                                      Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                                                      €84.00Price
                                                                      Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                        • Pack
                                                                        Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                        €269.74Price
                                                                        Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                          • Pack
                                                                          Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                          €269.74Price
                                                                          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
                                                                                  €720.00 Price
                                                                                  En Stock
                                                                                  €720.00 Price
                                                                                  Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
                                                                                      Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
                                                                                      €720.00Price
                                                                                      Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
                                                                                          Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
                                                                                          €720.00Price
                                                                                          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
                                                                                                  Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGEDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGE
                                                                                                      Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur
                                                                                                      €14.22Price
                                                                                                      Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGEDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGE
                                                                                                          Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur
                                                                                                          €14.22Price
                                                                                                          Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                                              Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                                              €36.80Price
                                                                                                              Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                                                  Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                                                  €36.80Price
                                                                                                                  En Stock
                                                                                                                  €150.77 Price
                                                                                                                  En Stock
                                                                                                                  €150.77 Price
                                                                                                                  Bride de turbo Megane N4
                                                                                                                      Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                      €150.77Price
                                                                                                                      Bride de turbo Megane N4
                                                                                                                          Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                          €150.77Price
                                                                                                                          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
                                                                                                                                  €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
                                                                                                                                          En Stock
                                                                                                                                          €1.37 Price
                                                                                                                                          En Stock
                                                                                                                                          €1.37 Price
                                                                                                                                          Collier serrage inox (durite) diametre 30-45mm
                                                                                                                                              Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                                                                                                                              €1.37Price
                                                                                                                                              Collier serrage inox (durite) diametre 30-45mm
                                                                                                                                                  Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                                                                                                                                  €1.37Price
                                                                                                                                                  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
                                                                                                                                                          €431.94 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €431.94 Price
                                                                                                                                                          Câblage additionnel commande Dash Megane N4
                                                                                                                                                              Câblage additionnel commande Dash Megane N4 Référence: 7711167213
                                                                                                                                                              €431.94Price
                                                                                                                                                              Câblage additionnel commande Dash Megane N4
                                                                                                                                                                  Câblage additionnel commande Dash Megane N4 Référence: 7711167213
                                                                                                                                                                  €431.94Price
                                                                                                                                                                  Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)
                                                                                                                                                                      Mechanical throttle potentiometer, identical to the original, compatible with Renault Clio 2 RS, Clio 2 Rally, Clio 2 Gr N, and Clio 2 X65 Cup. Optimal performance and precision for your vehicle.
                                                                                                                                                                      €67.50Price
                                                                                                                                                                      Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)
                                                                                                                                                                          Mechanical throttle potentiometer, identical to the original, compatible with Renault Clio 2 RS, Clio 2 Rally, Clio 2 Gr N, and Clio 2 X65 Cup. Optimal performance and precision for your vehicle.
                                                                                                                                                                          €67.50Price
                                                                                                                                                                          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