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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: Entretien
  • Categories: Préparation intérieure
  • Categories: Suralimentation (Turbo)
En Stock
€133.31 Price
En Stock
€133.31 Price
Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
      €133.31Price
      Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
          €133.31Price
          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
                  Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                      Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                      €4.72Price
                      Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                          Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                          €4.72Price
                          Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                              €0.23Price
                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                  Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                  €0.23Price
                                  En Stock
                                  €28.80 Price
                                  En Stock
                                  €28.80 Price
                                  Courroie accessoire Clio Gr N ou Rs avec montage type Ragnotti
                                      Renault Clio R3 Max Accessory Belt (128mm Pulley) High-performance accessory belt for Renault Clio R3 Max with 128mm crankshaft pulley. Optimize your race Clio's transmission. Discover complementary products at the bottom of the page.
                                      €28.80Price
                                      Courroie accessoire Clio Gr N ou Rs avec montage type Ragnotti
                                          Renault Clio R3 Max Accessory Belt (128mm Pulley) High-performance accessory belt for Renault Clio R3 Max with 128mm crankshaft pulley. Optimize your race Clio's transmission. Discover complementary products at the bottom of the page.
                                          €28.80Price
                                          Divergent boitier filtre assemblé Twingo R2
                                              Optimize the air intake of your Renault Twingo R2 (195/205hp) with this official RENAULT SPORT air filter housing diverter . Developed for competition, this part with reference 7711167591 is essential for maximizing airflow and ensuring maximum engine power across the entire operating range. An indispensable addition for engine performance .
                                              €511.63Price
                                              Divergent boitier filtre assemblé Twingo R2
                                                  Optimize the air intake of your Renault Twingo R2 (195/205hp) with this official RENAULT SPORT air filter housing diverter . Developed for competition, this part with reference 7711167591 is essential for maximizing airflow and ensuring maximum engine power across the entire operating range. An indispensable addition for engine performance .
                                                  €511.63Price
                                                  Dispo selon configuration
                                                  €67.23 €74.70 Regular price -10% off Price
                                                  Dispo selon configuration
                                                  €67.23 €74.70 Regular price -10% off Price
                                                  Kit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GTKit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GT
                                                    • Pack
                                                    Kit Vidange Elf Evolution SXR comprenant 3 bidons de 2 Litres d'huile Elf Evolution SXR 5w40 (préconisation Constructeur), 1 filtre à huile Renault et 1 joint de vidange
                                                    €67.23€74.70Regular price-10% offPrice
                                                    Kit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GTKit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GT
                                                      • Pack
                                                      Kit Vidange Elf Evolution SXR comprenant 3 bidons de 2 Litres d'huile Elf Evolution SXR 5w40 (préconisation Constructeur), 1 filtre à huile Renault et 1 joint de vidange
                                                      €67.23€74.70Regular price-10% offPrice
                                                      En Stock
                                                      €1.32 Price
                                                      En Stock
                                                      €1.32 Price
                                                      Joint Vidange Boite diam 16
                                                          Gearbox Drain Plug Washer – 16 mm The Renault drain plug washer, reference 7703062062 , is a sealing component designed to help prevent oil leaks at a compatible drain...
                                                          €1.32Price
                                                          Joint Vidange Boite diam 16
                                                              Gearbox Drain Plug Washer – 16 mm The Renault drain plug washer, reference 7703062062 , is a sealing component designed to help prevent oil leaks at a compatible drain...
                                                              €1.32Price
                                                              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
                                                                      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
                                                                              Entretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 CupEntretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 Cup
                                                                                  Entretoise galet distribution culasse Clio Gr N 8200607654
                                                                                  €12.06Price
                                                                                  Entretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 CupEntretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 Cup
                                                                                      Entretoise galet distribution culasse Clio Gr N 8200607654
                                                                                      €12.06Price
                                                                                      Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                          Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                          €7.80Price
                                                                                          Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                              Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                              €7.80Price
                                                                                              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
                                                                                                      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
                                                                                                              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
                                                                                                                      €211.80 Price
                                                                                                                      En Stock
                                                                                                                      €211.80 Price
                                                                                                                      Pompe à huileRenault Sport Oil Pump - Clio 2/3 RS & Megane 2/3 RS
                                                                                                                          Secure your engine block's lubrication with this high-performance oil pump for Renault 2.0L engines. Essential for maintaining constant oil pressure, it is compatible with Clio 2 RS , Clio 3 RS , as well as X65 Cup ,...
                                                                                                                          €211.80Price
                                                                                                                          Pompe à huileRenault Sport Oil Pump - Clio 2/3 RS & Megane 2/3 RS
                                                                                                                              Secure your engine block's lubrication with this high-performance oil pump for Renault 2.0L engines. Essential for maintaining constant oil pressure, it is compatible with Clio 2 RS , Clio 3 RS , as well as X65 Cup ,...
                                                                                                                              €211.80Price
                                                                                                                              Vis Fixation Volant Moteur
                                                                                                                                  Secure the transmission of power from your crankshaft to your clutch assembly with this heavy-duty Flywheel Fixing Bolt for the Renault Clio 16S, Williams, Clio 2 RS, and Clio 3 RS . This high-tensile specialist hardware is critical to enduring harsh rev matches and the...
                                                                                                                                  €5.64Price
                                                                                                                                  Vis Fixation Volant Moteur
                                                                                                                                      Secure the transmission of power from your crankshaft to your clutch assembly with this heavy-duty Flywheel Fixing Bolt for the Renault Clio 16S, Williams, Clio 2 RS, and Clio 3 RS . This high-tensile specialist hardware is critical to enduring harsh rev matches and the...
                                                                                                                                      €5.64Price
                                                                                                                                      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
                                                                                                                                              Motul 300V Competition 5W40 2L Engine Oil - RS, Audi, VW, Porsche, Mercedes (Racing)
                                                                                                                                                  Motul 300V Competition Engine Oil 5W40 2L - Ultimate Performance for Racing Don't let your competition vehicle's performance be compromised. engine oil is the ultimate choice for maximum protection and unmatched track performance. Specifically developed formula for extreme racing demands. 2-liter can. Also discover our...
                                                                                                                                                  €39.99Price
                                                                                                                                                  Motul 300V Competition 5W40 2L Engine Oil - RS, Audi, VW, Porsche, Mercedes (Racing)
                                                                                                                                                      Motul 300V Competition Engine Oil 5W40 2L - Ultimate Performance for Racing Don't let your competition vehicle's performance be compromised. engine oil is the ultimate choice for maximum protection and unmatched track performance. Specifically developed formula for extreme racing demands. 2-liter can. Also discover our...
                                                                                                                                                      €39.99Price
                                                                                                                                                      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
                                                                                                                                                                      €70.25 Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €70.25 Price
                                                                                                                                                                      Blue Crankshaft Half-Bearing Set
                                                                                                                                                                          Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                                                                                                                          €70.25Price
                                                                                                                                                                          Blue Crankshaft Half-Bearing Set
                                                                                                                                                                              Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                                                                                                                              €70.25Price
                                                                                                                                                                              Joint anti-usure jonction écope divergent Twingo R2
                                                                                                                                                                                  Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                                                                                                                  €8.48Price
                                                                                                                                                                                  Joint anti-usure jonction écope divergent Twingo R2
                                                                                                                                                                                      Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                                                                                                                      €8.48Price
                                                                                                                                                                                      Dump Valve GFB DV+ - Diverter Valve Clio 4 RS - Megane 4 RS et Megane 4 GTGFB DV+ Diverter Valve - Renault Clio 4 RS / Megane 4 GT / Megane 4 RS / Alpine A110
                                                                                                                                                                                          Stop losing your turbo boost! The GFB DV+ Dump Valve (Diverter Valve) is the essential upgrade for the reliability and responsiveness of your Renault Sport 1.6T and 1.8T engine (Clio 4 RS, Megane 4 GT, Megane 4 RS, Alpine A110). Retain the factory electronics...
                                                                                                                                                                                          €127.86Price
                                                                                                                                                                                          Dump Valve GFB DV+ - Diverter Valve Clio 4 RS - Megane 4 RS et Megane 4 GTGFB DV+ Diverter Valve - Renault Clio 4 RS / Megane 4 GT / Megane 4 RS / Alpine A110
                                                                                                                                                                                              Stop losing your turbo boost! The GFB DV+ Dump Valve (Diverter Valve) is the essential upgrade for the reliability and responsiveness of your Renault Sport 1.6T and 1.8T engine (Clio 4 RS, Megane 4 GT, Megane 4 RS, Alpine A110). Retain the factory electronics...
                                                                                                                                                                                              €127.86Price
                                                                                                                                                                                              Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                  The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                                                                                                                                                                  €35.80Price
                                                                                                                                                                                                  Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                      The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                                                                                                                                                                      €35.80Price
                                                                                                                                                                                                      Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                          Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                          €33.55Price
                                                                                                                                                                                                          Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                              Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                              €33.55Price