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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: Entretien
  • Categories: Kit Allègement
  • Categories: Suralimentation (Turbo)
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
          €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
                  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
                          €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
                                  Raccord Pompe à essence Clio GrN
                                      Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                                      €50.45Price
                                      Raccord Pompe à essence Clio GrN
                                          Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                                          €50.45Price
                                          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
                                                  Mecacyl CR 100 ml
                                                      Protect your high-performance engine's internal components with the Mecacyl CR 100 ml engine hyper-lubricant. This unique surface treatment mixes directly with your fresh oil to drastically reduce internal friction, lower operating temperatures, and optimize engine...
                                                      €28.50Price
                                                      Mecacyl CR 100 ml
                                                          Protect your high-performance engine's internal components with the Mecacyl CR 100 ml engine hyper-lubricant. This unique surface treatment mixes directly with your fresh oil to drastically reduce internal friction, lower operating temperatures, and optimize engine...
                                                          €28.50Price
                                                          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
                                                                  €54.41 Price
                                                                  En Stock
                                                                  €54.41 Price
                                                                  Cache bouchons arbres à cames moteur F4R
                                                                      Cache bouchons arbres à cames moteur F4R Kit de 2 plaques de fermeture moteur 7711155481
                                                                      €54.41Price
                                                                      Cache bouchons arbres à cames moteur F4R
                                                                          Cache bouchons arbres à cames moteur F4R Kit de 2 plaques de fermeture moteur 7711155481
                                                                          €54.41Price
                                                                          Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                                                              The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                                                              €191.53Price
                                                                              Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                                                                  The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                                                                  €191.53Price
                                                                                  En Stock
                                                                                  €8.57 Price
                                                                                  En Stock
                                                                                  €8.57 Price
                                                                                  Joint de décanteur Clio 2 RS - Clio 3 RS
                                                                                      Joint de décanteur Clio 2 RS et Clio 3 RS Joint se trouvant entre le décanteur et le plenum
                                                                                      €8.57Price
                                                                                      Joint de décanteur Clio 2 RS - Clio 3 RS
                                                                                          Joint de décanteur Clio 2 RS et Clio 3 RS Joint se trouvant entre le décanteur et le plenum
                                                                                          €8.57Price
                                                                                          Renault Sport camshaft alignment tool for F4R, F4Rt, and K4M engines, SKU: 1496.Camshaft Timing Tool | Renault Clio, Megane, Twingo RS
                                                                                              Protect your engine block against catastrophic mechanical failure during structural timing belt overhauls with this professional RENAULT Camshaft Timing Tool . Specifically engineered to slot into the rear alignment grooves of Renault Sport twin-cam engines (covering F4R,...
                                                                                              €96.37Price
                                                                                              Renault Sport camshaft alignment tool for F4R, F4Rt, and K4M engines, SKU: 1496.Camshaft Timing Tool | Renault Clio, Megane, Twingo RS
                                                                                                  Protect your engine block against catastrophic mechanical failure during structural timing belt overhauls with this professional RENAULT Camshaft Timing Tool . Specifically engineered to slot into the rear alignment grooves of Renault Sport twin-cam engines (covering F4R,...
                                                                                                  €96.37Price
                                                                                                  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
                                                                                                          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
                                                                                                                  En Stock
                                                                                                                  €7.27 €8.50 Regular price -€1.23 off Price
                                                                                                                  En Stock
                                                                                                                  €7.27 €8.50 Regular price -€1.23 off Price
                                                                                                                  Genuine Renault Oil Filter - Twingo 2 RS, Clio RS, Megane RS, WilliamsGenuine Renault Oil Filter - Twingo 2 RS, Clio RS, Megane RS, Williams
                                                                                                                    • On sale!
                                                                                                                    The oil filter is the guardian of your engine's cleanliness. This genuine Renault product is specifically designed for the engines of the Twingo 2 RS, Clio 2 RS, Clio 3 RS, Megane 2 RS, Clio 16S , and Clio Williams . It is essential for a successful oil change , ensuring optimal filtration of impurities and protecting internal components from premature wear.
                                                                                                                    €7.27€8.50Regular price-€1.23 offPrice
                                                                                                                    Genuine Renault Oil Filter - Twingo 2 RS, Clio RS, Megane RS, WilliamsGenuine Renault Oil Filter - Twingo 2 RS, Clio RS, Megane RS, Williams
                                                                                                                      • On sale!
                                                                                                                      The oil filter is the guardian of your engine's cleanliness. This genuine Renault product is specifically designed for the engines of the Twingo 2 RS, Clio 2 RS, Clio 3 RS, Megane 2 RS, Clio 16S , and Clio Williams . It is essential for a successful oil change , ensuring optimal filtration of impurities and protecting internal components from premature wear.
                                                                                                                      €7.27€8.50Regular price-€1.23 offPrice
                                                                                                                      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
                                                                                                                              €19.30 €25.79 Regular price -€6.49 off Price
                                                                                                                              En Stock
                                                                                                                              €19.30 €25.79 Regular price -€6.49 off Price
                                                                                                                              Courroie accessoire Twingo RS et R1
                                                                                                                                  Don't risk an unexpected breakdown! This summary concerns the Genuine RENAULT Accessory Belt for the Renault Twingo 2 RS and Renault Wind 1.6 16v models. This is an essential part for the smooth running of your sports engine. Failing to replace it in time risks costly damage. ...
                                                                                                                                  €19.30€25.79Regular price-€6.49 offPrice
                                                                                                                                  Courroie accessoire Twingo RS et R1
                                                                                                                                      Don't risk an unexpected breakdown! This summary concerns the Genuine RENAULT Accessory Belt for the Renault Twingo 2 RS and Renault Wind 1.6 16v models. This is an essential part for the smooth running of your sports engine. Failing to replace it in time risks costly damage. ...
                                                                                                                                      €19.30€25.79Regular price-€6.49 offPrice
                                                                                                                                      Pige de Calage Vilebrequin F4R Clio RS Megane RS
                                                                                                                                          Prevent catastrophic engine failure during your timing belt replacement with this professional-grade Crankshaft Timing Pin F4R Clio RS Megane RS . Engineered specifically to match the official factory blueprints of Renault Sport power units, this high-tensile steel tool...
                                                                                                                                          €41.40Price
                                                                                                                                          Pige de Calage Vilebrequin F4R Clio RS Megane RS
                                                                                                                                              Prevent catastrophic engine failure during your timing belt replacement with this professional-grade Crankshaft Timing Pin F4R Clio RS Megane RS . Engineered specifically to match the official factory blueprints of Renault Sport power units, this high-tensile steel tool...
                                                                                                                                              €41.40Price
                                                                                                                                              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
                                                                                                                                                      Renault Camshaft Dephaser Seal – Clio 2/3 RS & Mégane 3 RSRenault Camshaft Dephaser Seal – Clio 2/3 RS & Mégane 3 RS
                                                                                                                                                          An aged or damaged seal around the camshaft timing solenoid can lead to oil leaks and additional engine maintenance. The Renault camshaft dephaser solenoid oil seal (reference 7700106385) is designed to provide sealing at the solenoid mounting point on compatible variable...
                                                                                                                                                          €16.84Price
                                                                                                                                                          Renault Camshaft Dephaser Seal – Clio 2/3 RS & Mégane 3 RSRenault Camshaft Dephaser Seal – Clio 2/3 RS & Mégane 3 RS
                                                                                                                                                              An aged or damaged seal around the camshaft timing solenoid can lead to oil leaks and additional engine maintenance. The Renault camshaft dephaser solenoid oil seal (reference 7700106385) is designed to provide sealing at the solenoid mounting point on compatible variable...
                                                                                                                                                              €16.84Price
                                                                                                                                                              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
                                                                                                                                                                  En Stock
                                                                                                                                                                  €112.69 Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €112.69 Price
                                                                                                                                                                  Vis de Culasse (x10)
                                                                                                                                                                      Ensemble de vis de culasse pour Clio 3 RS, Megane 2 RS, Megane 3 RS, Clio 2 RS et Megane 2 RS Véritable produit d'origine
                                                                                                                                                                      €112.69Price
                                                                                                                                                                      Vis de Culasse (x10)
                                                                                                                                                                          Ensemble de vis de culasse pour Clio 3 RS, Megane 2 RS, Megane 3 RS, Clio 2 RS et Megane 2 RS Véritable produit d'origine
                                                                                                                                                                          €112.69Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €139.18 €231.97 Regular price -40% off Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €139.18 €231.97 Regular price -40% off Price
                                                                                                                                                                          Kit Distribution Clio 1.8 16S et WilliamsKit Distribution Clio 1.8 16S et Williams
                                                                                                                                                                              Kit distribution Renault pour Clio 1.8 16S Le kit contient la courroie et les 2 galets En cas de doute nous consulter.
                                                                                                                                                                              €139.18€231.97Regular price-40% offPrice
                                                                                                                                                                              Kit Distribution Clio 1.8 16S et WilliamsKit Distribution Clio 1.8 16S et Williams
                                                                                                                                                                                  Kit distribution Renault pour Clio 1.8 16S Le kit contient la courroie et les 2 galets En cas de doute nous consulter.
                                                                                                                                                                                  €139.18€231.97Regular price-40% offPrice
                                                                                                                                                                                  Outil de blocage Poulie Arbres à cames F4R Clio RS Megane RSOutil de blocage Poulie Arbres à cames F4R Clio RS Megane RS
                                                                                                                                                                                      Véritable outil d'origine pour le blocage des poulies d'arbres à cames nécessaire pour le remplacement de la distribution pour les moteurs F4R de Clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS. Kit Spécifique au F4R Renault Sport
                                                                                                                                                                                      €139.02Price
                                                                                                                                                                                      Outil de blocage Poulie Arbres à cames F4R Clio RS Megane RSOutil de blocage Poulie Arbres à cames F4R Clio RS Megane RS
                                                                                                                                                                                          Véritable outil d'origine pour le blocage des poulies d'arbres à cames nécessaire pour le remplacement de la distribution pour les moteurs F4R de Clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS. Kit Spécifique au F4R Renault Sport
                                                                                                                                                                                          €139.02Price
                                                                                                                                                                                          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