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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)
Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
      Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
      €33.94Price
      Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
          Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
          €33.94Price
          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
                  En Stock
                  €244.00 Price
                  En Stock
                  €244.00 Price
                  Wasegate Forge Megane RS
                      Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                      €244.00Price
                      Wasegate Forge Megane RS
                          Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                          €244.00Price
                          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
                                  €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
                                          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
                                                  Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                      Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                      €44.99Price
                                                      Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                          Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                          €44.99Price
                                                          En Stock
                                                          €197.06 Price
                                                          En Stock
                                                          €197.06 Price
                                                          Poulie de dephasage Clio 3 RS - Megane 3 RSPoulie de dephasage Clio 3 RS - Megane 3 RS
                                                              Poulie de déphasage Veritable Produit Renault vendu dans sa boite
                                                              €197.06Price
                                                              Poulie de dephasage Clio 3 RS - Megane 3 RSPoulie de dephasage Clio 3 RS - Megane 3 RS
                                                                  Poulie de déphasage Veritable Produit Renault vendu dans sa boite
                                                                  €197.06Price
                                                                  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
                                                                                  €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
                                                                                                  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
                                                                                                                      €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
                                                                                                                              €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
                                                                                                                                      €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
                                                                                                                                                                              Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                                                                                                                                                                  Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                                                                                                                                                                  €45.90Price
                                                                                                                                                                                  Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                                                                                                                                                                      Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                                                                                                                                                                      €45.90Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €132.37 €161.42 Regular price -18% off Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €132.37 €161.42 Regular price -18% off Price
                                                                                                                                                                                      Kit accessoire Clio 4 RS
                                                                                                                                                                                          Kit accessoire Clio 4 RS Véritable produit d'origine
                                                                                                                                                                                          €132.37€161.42Regular price-18% offPrice
                                                                                                                                                                                          Kit accessoire Clio 4 RS
                                                                                                                                                                                              Kit accessoire Clio 4 RS Véritable produit d'origine
                                                                                                                                                                                              €132.37€161.42Regular price-18% offPrice
                                                                                                                                                                                              Genuine factory red liquid gasket resin for engine casing and valve cover sealing, SKU: 7711237640.
                                                                                                                                                                                                  Prevent oil weeping and critical oil pressure drops within your engine block with the Genuine Factory Resin Glue Red Liquid Gasket Compound . Specially formulated under official manufacturer part numbers 7711237640 , 7701421162 , and...
                                                                                                                                                                                                  €33.22Price
                                                                                                                                                                                                  Genuine factory red liquid gasket resin for engine casing and valve cover sealing, SKU: 7711237640.
                                                                                                                                                                                                      Prevent oil weeping and critical oil pressure drops within your engine block with the Genuine Factory Resin Glue Red Liquid Gasket Compound . Specially formulated under official manufacturer part numbers 7711237640 , 7701421162 , and...
                                                                                                                                                                                                      €33.22Price
                                                                                                                                                                                                      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