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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: Circuit d'air
  • Categories: Support moteur
  • Categories: Suralimentation (Turbo)
En Stock
€12.50 Price
En Stock
€12.50 Price
Joint Collecteur Admission Clio 3 RS
      Joint Collecteur Admission Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
      €12.50Price
      Joint Collecteur Admission Clio 3 RS
          Joint Collecteur Admission Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
          €12.50Price
          Echangeur air/air Megane 3 RS et N4Genuine Renault Air/Air Intercooler for Mégane 3 RS and N4
              Don't accept any loss of performance for your Mégane 3 RS or Mégane N4 ! This strictly genuine Renault air/air intercooler is the cornerstone for maintaining your engine's power and reliability. Without it, your sports vehicle risks never reaching its full potential, especially in extreme conditions. Find complementary products at the bottom...
              €493.96Price
              Echangeur air/air Megane 3 RS et N4Genuine Renault Air/Air Intercooler for Mégane 3 RS and N4
                  Don't accept any loss of performance for your Mégane 3 RS or Mégane N4 ! This strictly genuine Renault air/air intercooler is the cornerstone for maintaining your engine's power and reliability. Without it, your sports vehicle risks never reaching its full potential, especially in extreme conditions. Find complementary products at the bottom...
                  €493.96Price
                  Multi-layer reinforced silicone turbo boost hose kit by Forge Motorsport for Renault Megane 2 RS.Silicone Turbo Hose Kit Forge | Renault Megane 2 RS
                      Do not risk a sudden loss of boost pressure during a hard acceleration pull, a split factory duct caused by extreme engine bay heat, or an efficiency drop at your intercooler cores. The premium Kit Durites (Tubulures) Turbo Forge Motorsport pour Megane 2 RS replaces...
                      €241.00Price
                      Multi-layer reinforced silicone turbo boost hose kit by Forge Motorsport for Renault Megane 2 RS.Silicone Turbo Hose Kit Forge | Renault Megane 2 RS
                          Do not risk a sudden loss of boost pressure during a hard acceleration pull, a split factory duct caused by extreme engine bay heat, or an efficiency drop at your intercooler cores. The premium Kit Durites (Tubulures) Turbo Forge Motorsport pour Megane 2 RS replaces...
                          €241.00Price
                          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
                                  Dump Valve Megane 3 RS avec Kit de montageDump Valve Megane 3 RS avec Kit de montage
                                      Kit Dump Valve Forge. Circuit ouvert. Ce mode de fonctionnement est reconnaissable au PSSCHHIIIITTT qui se laisse entendre lors du changement de rapport Le kit Comprend, la Dump Valve, 2 colliers, un raccord inox, et un tube coudé et le bouchon nécessaire à boucher le trou lors de la suppression de la dump valve d'origine (pas present dans tous les kits que l'on trouve sur le net). Idéal sur...
                                      €261.86Price
                                      Dump Valve Megane 3 RS avec Kit de montageDump Valve Megane 3 RS avec Kit de montage
                                          Kit Dump Valve Forge. Circuit ouvert. Ce mode de fonctionnement est reconnaissable au PSSCHHIIIITTT qui se laisse entendre lors du changement de rapport Le kit Comprend, la Dump Valve, 2 colliers, un raccord inox, et un tube coudé et le bouchon nécessaire à boucher le trou lors de la suppression de la dump valve d'origine (pas present dans tous les kits que l'on trouve sur le net). Idéal sur...
                                          €261.86Price
                                          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
                                                  €23.50 Price
                                                  En Stock
                                                  €23.50 Price
                                                  Kit Revision Dump Valve Recirculation Forge
                                                      Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                                                      €23.50Price
                                                      Kit Revision Dump Valve Recirculation Forge
                                                          Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                                                          €23.50Price
                                                          En Stock
                                                          €17.45 Price
                                                          En Stock
                                                          €17.45 Price
                                                          Support inférieur écope boitier filtre Twingo R2
                                                              Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                              €17.45Price
                                                              Support inférieur écope boitier filtre Twingo R2
                                                                  Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                  €17.45Price
                                                                  En Stock
                                                                  €10.57 €13.93 Regular price -€3.36 off Price
                                                                  En Stock
                                                                  €10.57 €13.93 Regular price -€3.36 off Price
                                                                  Joint Collecteur Admission Clio 2 RS
                                                                      Ensure vital engine sealing with this genuine Renault intake manifold gasket for the Clio 2 RS (172 and 182hp). This authentic component guarantees a perfect junction between the cylinder head and your manifold, preventing any parasitic air leaks that could degrade the performance of your F4R engine . Do not...
                                                                      €10.57€13.93Regular price-€3.36 offPrice
                                                                      Joint Collecteur Admission Clio 2 RS
                                                                          Ensure vital engine sealing with this genuine Renault intake manifold gasket for the Clio 2 RS (172 and 182hp). This authentic component guarantees a perfect junction between the cylinder head and your manifold, preventing any parasitic air leaks that could degrade the performance of your F4R engine . Do not...
                                                                          €10.57€13.93Regular price-€3.36 offPrice
                                                                          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
                                                                              €13.37 Price
                                                                              En Stock
                                                                              €13.37 Price
                                                                              Joint Plenum Clio 2 RS
                                                                                  Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                  €13.37Price
                                                                                  Joint Plenum Clio 2 RS
                                                                                      Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                      €13.37Price
                                                                                      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
                                                                                              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
                                                                                                      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
                                                                                                              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
                                                                                                                      €36.01 Price
                                                                                                                      En Stock
                                                                                                                      €36.01 Price
                                                                                                                      Kit ressorts Dump Valve Forge
                                                                                                                          Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                                                                                                          €36.01Price
                                                                                                                          Kit ressorts Dump Valve Forge
                                                                                                                              Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                                                                                                              €36.01Price
                                                                                                                              Dispo selon configuration
                                                                                                                              €925.00 Price
                                                                                                                              Dispo selon configuration
                                                                                                                              €925.00 Price
                                                                                                                              Echangeur Forge Clio 4 RSEchangeur Forge Clio 4 RS
                                                                                                                                  La dernière génération 1.6 turbo Renault Clio dispose d'un echangeur monté verticalement. L'endroit n' est pas ideal et trop petit pour la voiture standard. La solution pour les voitures Renault Clio Cup était de rénover l'ensemble du réseau avec un refroidissement par pulvérisation d'eau, mais ce fut insuffisant sur la piste après quelques tours. Notre solution était un échangeur monté...
                                                                                                                                  €925.00Price
                                                                                                                                  Echangeur Forge Clio 4 RSEchangeur Forge Clio 4 RS
                                                                                                                                      La dernière génération 1.6 turbo Renault Clio dispose d'un echangeur monté verticalement. L'endroit n' est pas ideal et trop petit pour la voiture standard. La solution pour les voitures Renault Clio Cup était de rénover l'ensemble du réseau avec un refroidissement par pulvérisation d'eau, mais ce fut insuffisant sur la piste après quelques tours. Notre solution était un échangeur monté...
                                                                                                                                      €925.00Price
                                                                                                                                      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
                                                                                                                                              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
                                                                                                                                                      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
                                                                                                                                                              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
                                                                                                                                                                      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
                                                                                                                                                                              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
                                                                                                                                                                                      €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