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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)
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
                                                                              DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                  Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                  €224.09Price
                                                                                  DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                      Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                      €224.09Price
                                                                                      En Stock
                                                                                      €15.42 Price
                                                                                      En Stock
                                                                                      €15.42 Price
                                                                                      Huile moteur Total quartz racing 10w60
                                                                                          Huile moteur Total Quartz Racing 10w60 Produit préconisé par Renault sport pour la Mégane N4 Référence: 7711166390 Vendu en bidon de 1L
                                                                                          €15.42Price
                                                                                          Huile moteur Total quartz racing 10w60
                                                                                              Huile moteur Total Quartz Racing 10w60 Produit préconisé par Renault sport pour la Mégane N4 Référence: 7711166390 Vendu en bidon de 1L
                                                                                              €15.42Price
                                                                                              En Stock
                                                                                              €77.92 €111.31 Regular price -30% off Price
                                                                                              En Stock
                                                                                              €77.92 €111.31 Regular price -30% off Price
                                                                                              Kit joints spy et vis arbres à cames
                                                                                                  Kit joints spy et vis arbres à cames
                                                                                                  €77.92€111.31Regular price-30% offPrice
                                                                                                  Kit joints spy et vis arbres à cames
                                                                                                      Kit joints spy et vis arbres à cames
                                                                                                      €77.92€111.31Regular price-30% offPrice
                                                                                                      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
                                                                                                              €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
                                                                                                                      €8.52 €11.03 Regular price -€2.51 off Price
                                                                                                                      En Stock
                                                                                                                      €8.52 €11.03 Regular price -€2.51 off Price
                                                                                                                      Filtre à huile Megane 3 RSFiltre à huile Megane 3 RS
                                                                                                                          The Mégane 3 RS oil filter provides optimal protection and performance for your engine, ensuring efficient filtration of impurities and long-lasting durability , even in the most demanding conditions.
                                                                                                                          €8.52€11.03Regular price-€2.51 offPrice
                                                                                                                          Filtre à huile Megane 3 RSFiltre à huile Megane 3 RS
                                                                                                                              The Mégane 3 RS oil filter provides optimal protection and performance for your engine, ensuring efficient filtration of impurities and long-lasting durability , even in the most demanding conditions.
                                                                                                                              €8.52€11.03Regular price-€2.51 offPrice
                                                                                                                              Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                                                                                                  Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                                                                                                  €117.43Price
                                                                                                                                  Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                                                                                                      Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                                                                                                      €117.43Price
                                                                                                                                      En Stock
                                                                                                                                      €129.34 Price
                                                                                                                                      En Stock
                                                                                                                                      €129.34 Price
                                                                                                                                      Carter de protection Courroie de distribution Clio RS
                                                                                                                                          Pièce empêchant le passage de la courroie d'accessoires dans la distribution Compatible avec Clio 2 RS, Clio 3 RS La mise en place sur Clio 2 nécessite une legere découpe du carter en plastique  Fourni sans les vis, veuillez consulter les produits associés en bas de page
                                                                                                                                          €129.34Price
                                                                                                                                          Carter de protection Courroie de distribution Clio RS
                                                                                                                                              Pièce empêchant le passage de la courroie d'accessoires dans la distribution Compatible avec Clio 2 RS, Clio 3 RS La mise en place sur Clio 2 nécessite une legere découpe du carter en plastique  Fourni sans les vis, veuillez consulter les produits associés en bas de page
                                                                                                                                              €129.34Price
                                                                                                                                              En Stock
                                                                                                                                              €198.25 Price
                                                                                                                                              En Stock
                                                                                                                                              €198.25 Price
                                                                                                                                              Kit Joint Refection moteur Origine Clio 3 RS
                                                                                                                                                  Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                                                                                  €198.25Price
                                                                                                                                                  Kit Joint Refection moteur Origine Clio 3 RS
                                                                                                                                                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                                                                                      €198.25Price
                                                                                                                                                      En Stock
                                                                                                                                                      €20.80 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €20.80 Price
                                                                                                                                                      Exhaust Manifold Gasket | Renault Twingo 2 RS / R2
                                                                                                                                                          Avoid exhaust gas leaks and loss of sealing at the exhaust manifold of your Renault Twingo 2 RS . This exhaust manifold gasket is designed for the 1.6 16V K4M engine and is suitable for sporting applications including the...
                                                                                                                                                          €20.80Price
                                                                                                                                                          Exhaust Manifold Gasket | Renault Twingo 2 RS / R2
                                                                                                                                                              Avoid exhaust gas leaks and loss of sealing at the exhaust manifold of your Renault Twingo 2 RS . This exhaust manifold gasket is designed for the 1.6 16V K4M engine and is suitable for sporting applications including the...
                                                                                                                                                              €20.80Price
                                                                                                                                                              Kit Joint Spy Arbres à Cames + Vis de Poulie Clio 2 RS
                                                                                                                                                                  Kit Joint Spy Arbres à Cames + Vis de Poulie Kit indispensable pour proceder au changement de la distribution sur Clio 2 RS
                                                                                                                                                                  €54.58Price
                                                                                                                                                                  Kit Joint Spy Arbres à Cames + Vis de Poulie Clio 2 RS
                                                                                                                                                                      Kit Joint Spy Arbres à Cames + Vis de Poulie Kit indispensable pour proceder au changement de la distribution sur Clio 2 RS
                                                                                                                                                                      €54.58Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €30.64 Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €30.64 Price
                                                                                                                                                                      Joint tournant (joint spy vilebrequin coté volant moteur)
                                                                                                                                                                          The original Renault flywheel side oil seal is an essential part to ensure engine sealing for your Renault Clio 2 RS, Gr N, X65 Cup, Clio 3 RS, R3, X85 Cup, Mégane 2 RS, and Mégane 3 RS . Prevent oil leaks and maintain your vehicle's performance with this authentic replacement part.
                                                                                                                                                                          €30.64Price
                                                                                                                                                                          Joint tournant (joint spy vilebrequin coté volant moteur)
                                                                                                                                                                              The original Renault flywheel side oil seal is an essential part to ensure engine sealing for your Renault Clio 2 RS, Gr N, X65 Cup, Clio 3 RS, R3, X85 Cup, Mégane 2 RS, and Mégane 3 RS . Prevent oil leaks and maintain your vehicle's performance with this authentic replacement part.
                                                                                                                                                                              €30.64Price
                                                                                                                                                                              Dispo selon configuration
                                                                                                                                                                              €61.15 €71.94 Regular price -15% off Price
                                                                                                                                                                              Dispo selon configuration
                                                                                                                                                                              €61.15 €71.94 Regular price -15% off Price
                                                                                                                                                                              Kit Vidange Elf SXRKit Vidange Elf SXR
                                                                                                                                                                                • Pack
                                                                                                                                                                                Kit Vidange ELF SXR, filtre à huile Renault pour Clio 2 RS, Clio 3 RS et Megane 2 RS
                                                                                                                                                                                €61.15€71.94Regular price-15% offPrice
                                                                                                                                                                                Kit Vidange Elf SXRKit Vidange Elf SXR
                                                                                                                                                                                  • Pack
                                                                                                                                                                                  Kit Vidange ELF SXR, filtre à huile Renault pour Clio 2 RS, Clio 3 RS et Megane 2 RS
                                                                                                                                                                                  €61.15€71.94Regular price-15% offPrice
                                                                                                                                                                                  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
                                                                                                                                                                                          €81.58 Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €81.58 Price
                                                                                                                                                                                          Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                                                                                                                                                              Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                                                                                                                                                              €81.58Price
                                                                                                                                                                                              Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                                                                                                                                                                  Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                                                                                                                                                                  €81.58Price