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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: Allumage
  • Categories: Refroidissement
  • Categories: Suralimentation (Turbo)
Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RSLot de 2 bouchons silicone pour suppression résonateur Clio 4 RS
      Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RS Uniquement compatible avec la cold side AIRTEC Si vous disposez encore de la durite d'origine, consultez nos autres bouchons
      €58.32Price
      Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RSLot de 2 bouchons silicone pour suppression résonateur Clio 4 RS
          Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RS Uniquement compatible avec la cold side AIRTEC Si vous disposez encore de la durite d'origine, consultez nos autres bouchons
          €58.32Price
          En Stock
          €1.36 Price
          En Stock
          €1.36 Price
          Collier serrage inox (durite) diametre 32-50mm
              Collier serrage inox (durite) diametre 32-50mm Vendu à l'unité
              €1.36Price
              Collier serrage inox (durite) diametre 32-50mm
                  Collier serrage inox (durite) diametre 32-50mm Vendu à l'unité
                  €1.36Price
                  En Stock
                  €92.35 Price
                  En Stock
                  €92.35 Price
                  Support Pédale Accélérateur Clio 3 X85 Cup
                      Support Pédale Accélérateur Clio 3 X85 Cup Référence: 7711160177
                      €92.35Price
                      Support Pédale Accélérateur Clio 3 X85 Cup
                          Support Pédale Accélérateur Clio 3 X85 Cup Référence: 7711160177
                          €92.35Price
                          Tuyau carburant entre coupling Goodridge et rampe Megane N4
                              Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                              €146.16Price
                              Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                  Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                  €146.16Price
                                  En Stock
                                  €12.78 Price
                                  En Stock
                                  €12.78 Price
                                  Tuyau essence vapeur canister Ø8 Megane N4Tuyau essence vapeur canister Ø8 Megane N4
                                      Tuyau essence vapeur canister Ø8 Megane N4 Référence: 7711167251
                                      €12.78Price
                                      Tuyau essence vapeur canister Ø8 Megane N4Tuyau essence vapeur canister Ø8 Megane N4
                                          Tuyau essence vapeur canister Ø8 Megane N4 Référence: 7711167251
                                          €12.78Price
                                          Kit durites de turbo Forge Motorsport Megane 4 RSForge Motorsport Turbo Hose Kit - Renault Megane 4 RS
                                              Secure your boost pressure consistency and eliminate intake charge drops with the high-performance Forge Motorsport Turbo Hose Kit for the Renault Megane 4 RS . This premium set of uprated silicone boost couplers replaces the restrictive factory rubber lines to optimize...
                                              €294.76Price
                                              Kit durites de turbo Forge Motorsport Megane 4 RSForge Motorsport Turbo Hose Kit - Renault Megane 4 RS
                                                  Secure your boost pressure consistency and eliminate intake charge drops with the high-performance Forge Motorsport Turbo Hose Kit for the Renault Megane 4 RS . This premium set of uprated silicone boost couplers replaces the restrictive factory rubber lines to optimize...
                                                  €294.76Price
                                                  En Stock
                                                  €1.84 Price
                                                  En Stock
                                                  €1.84 Price
                                                  Collier serrage inox (durite) diametre 50-70mmCollier serrage inox (durite) diametre 50-70mm
                                                      Collier serrage inox (durite) diametre 50-70mm Vendu à l'unité
                                                      €1.84Price
                                                      Collier serrage inox (durite) diametre 50-70mmCollier serrage inox (durite) diametre 50-70mm
                                                          Collier serrage inox (durite) diametre 50-70mm Vendu à l'unité
                                                          €1.84Price
                                                          NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
                                                              Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
                                                              €26.77Price
                                                              NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
                                                                  Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
                                                                  €26.77Price
                                                                  Câble accélérateur Clio 3 X85 Cup
                                                                      Don't let a seized cable compromise your responsiveness on the track. This official Renault Sport throttle cable is specifically designed for the Renault Clio 3 X85 Cup . Genuine manufacturer part (Reference 7711160160). High-resistance design for intensive competition ...
                                                                      €52.69Price
                                                                      Câble accélérateur Clio 3 X85 Cup
                                                                          Don't let a seized cable compromise your responsiveness on the track. This official Renault Sport throttle cable is specifically designed for the Renault Clio 3 X85 Cup . Genuine manufacturer part (Reference 7711160160). High-resistance design for intensive competition ...
                                                                          €52.69Price
                                                                          En Stock
                                                                          €2.08 Price
                                                                          En Stock
                                                                          €2.08 Price
                                                                          Collier serrage inox (durite) diametre 60-80mmCollier serrage inox (durite) diametre 60-80mm
                                                                              Collier serrage inox (durite) diametre 60-80mm Vendu à l'unité
                                                                              €2.08Price
                                                                              Collier serrage inox (durite) diametre 60-80mmCollier serrage inox (durite) diametre 60-80mm
                                                                                  Collier serrage inox (durite) diametre 60-80mm Vendu à l'unité
                                                                                  €2.08Price
                                                                                  En Stock
                                                                                  €13.37 Price
                                                                                  En Stock
                                                                                  €13.37 Price
                                                                                  Joint Plenum Clio 2 RS
                                                                                      Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                      €13.37Price
                                                                                      Joint Plenum Clio 2 RS
                                                                                          Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                          €13.37Price
                                                                                          Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                              Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                              €217.02Price
                                                                                              Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                  Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                  €217.02Price
                                                                                                  En Stock
                                                                                                  €35.68 Price
                                                                                                  En Stock
                                                                                                  €35.68 Price
                                                                                                  Butée basse pédale d'accélérateur Twingo R2Butée basse pédale d'accélérateur Twingo R2
                                                                                                      Butée basse pédale d'accélérateur Twingo R2 Référence: 7711157182
                                                                                                      €35.68Price
                                                                                                      Butée basse pédale d'accélérateur Twingo R2Butée basse pédale d'accélérateur Twingo R2
                                                                                                          Butée basse pédale d'accélérateur Twingo R2 Référence: 7711157182
                                                                                                          €35.68Price
                                                                                                          En Stock
                                                                                                          €266.00 Price
                                                                                                          En Stock
                                                                                                          €266.00 Price
                                                                                                          Wasegate Forge Clio 4 RS
                                                                                                              Optimize your boost management with the Forge Motorsport Wastegate for Renault Clio 4 RS (reference FMACRTRCT ). This piston-actuated turbo actuator is designed to provide significantly higher pressure stability than the factory unit. Essential for...
                                                                                                              €266.00Price
                                                                                                              Wasegate Forge Clio 4 RS
                                                                                                                  Optimize your boost management with the Forge Motorsport Wastegate for Renault Clio 4 RS (reference FMACRTRCT ). This piston-actuated turbo actuator is designed to provide significantly higher pressure stability than the factory unit. Essential for...
                                                                                                                  €266.00Price
                                                                                                                  Joint de conduit d'air sortie de turbo Clio 4 RS - Megane 4 GT et RS
                                                                                                                      Ensure absolute air tightness within your forced induction system with the Genuine Renault Turbo Outlet Air Duct Gasket . Specifically calibrated to withstand the high pressures of turbocharged engines, this official O-ring eliminates boost leaks between the turbocharger and...
                                                                                                                      €15.34Price
                                                                                                                      Joint de conduit d'air sortie de turbo Clio 4 RS - Megane 4 GT et RS
                                                                                                                          Ensure absolute air tightness within your forced induction system with the Genuine Renault Turbo Outlet Air Duct Gasket . Specifically calibrated to withstand the high pressures of turbocharged engines, this official O-ring eliminates boost leaks between the turbocharger and...
                                                                                                                          €15.34Price
                                                                                                                          En Stock
                                                                                                                          €1.00 Price
                                                                                                                          En Stock
                                                                                                                          €1.00 Price
                                                                                                                          Collier serrage inox (durite) diametre 8-12mm
                                                                                                                              Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                                                                                                              €1.00Price
                                                                                                                              Collier serrage inox (durite) diametre 8-12mm
                                                                                                                                  Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                                                                                                                  €1.00Price
                                                                                                                                  Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)
                                                                                                                                      Mechanical throttle potentiometer, identical to the original, compatible with Renault Clio 2 RS, Clio 2 Rally, Clio 2 Gr N, and Clio 2 X65 Cup. Optimal performance and precision for your vehicle.
                                                                                                                                      €67.50Price
                                                                                                                                      Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)
                                                                                                                                          Mechanical throttle potentiometer, identical to the original, compatible with Renault Clio 2 RS, Clio 2 Rally, Clio 2 Gr N, and Clio 2 X65 Cup. Optimal performance and precision for your vehicle.
                                                                                                                                          €67.50Price
                                                                                                                                          En Stock
                                                                                                                                          €402.96 Price
                                                                                                                                          En Stock
                                                                                                                                          €402.96 Price
                                                                                                                                          Convergent boitier filtre assemblé Twingo R2 195cvConvergent boitier filtre assemblé Twingo R2 195cv
                                                                                                                                              Convergent boitier filtre assemblé Twingo R2 195cv
                                                                                                                                              €402.96Price
                                                                                                                                              Convergent boitier filtre assemblé Twingo R2 195cvConvergent boitier filtre assemblé Twingo R2 195cv
                                                                                                                                                  Convergent boitier filtre assemblé Twingo R2 195cv
                                                                                                                                                  €402.96Price
                                                                                                                                                  En Stock
                                                                                                                                                  €486.55 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €486.55 Price
                                                                                                                                                  Collecteur admission Clio 2 X65 Cup et Gr N
                                                                                                                                                      Collecteur admission Clio 2 X65 Cup et Gr N Prévu pour papillon mécanique
                                                                                                                                                      €486.55Price
                                                                                                                                                      Collecteur admission Clio 2 X65 Cup et Gr N
                                                                                                                                                          Collecteur admission Clio 2 X65 Cup et Gr N Prévu pour papillon mécanique
                                                                                                                                                          €486.55Price
                                                                                                                                                          En Stock
                                                                                                                                                          €15.49 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €15.49 Price
                                                                                                                                                          bague étanchéité bobine crayon
                                                                                                                                                              The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                              €15.49Price
                                                                                                                                                              bague étanchéité bobine crayon
                                                                                                                                                                  The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                                  €15.49Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €27.47 Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €27.47 Price
                                                                                                                                                                  Joint de turbo sur collecteur Megane 2 RS Megane 3 RS
                                                                                                                                                                      Optimize your F4RT engine's sealing with this genuine RENAULT turbocharger to manifold gasket . Specifically designed for the Renault Megane 2 RS and Megane 3 RS , it is the essential component to maintain nominal boost pressure. Do not risk an exhaust leak that would degrade your performance and the...
                                                                                                                                                                      €27.47Price
                                                                                                                                                                      Joint de turbo sur collecteur Megane 2 RS Megane 3 RS
                                                                                                                                                                          Optimize your F4RT engine's sealing with this genuine RENAULT turbocharger to manifold gasket . Specifically designed for the Renault Megane 2 RS and Megane 3 RS , it is the essential component to maintain nominal boost pressure. Do not risk an exhaust leak that would degrade your performance and the...
                                                                                                                                                                          €27.47Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €24.00 €30.00 Regular price -20% off Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €24.00 €30.00 Regular price -20% off Price
                                                                                                                                                                          Jeu de Bougies Renault Clio Williams
                                                                                                                                                                              Jeu de Bougies Renault Clio Williams Véritable produit d'origine
                                                                                                                                                                              €24.00€30.00Regular price-20% offPrice
                                                                                                                                                                              Jeu de Bougies Renault Clio Williams
                                                                                                                                                                                  Jeu de Bougies Renault Clio Williams Véritable produit d'origine
                                                                                                                                                                                  €24.00€30.00Regular price-20% offPrice
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €220.69 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €220.69 Price
                                                                                                                                                                                  Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                                                                                                      Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                                                                                                      €220.69Price
                                                                                                                                                                                      Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                                                                                                          Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                                                                                                          €220.69Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €69.56 Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €69.56 Price
                                                                                                                                                                                          Flexible à carburant Té / rampe Clio 3 Cup
                                                                                                                                                                                              Do not risk a fuel system failure mid-session. The Goodridge Tee to fuel rail hose is crucial for the reliability of your Clio 3 x85 Cup . Keeping a worn or inadequate hose directly exposes your engine to critical fuel starvation or severe leak risks. Permanently secure your injection system with this high-precision...
                                                                                                                                                                                              €69.56Price
                                                                                                                                                                                              Flexible à carburant Té / rampe Clio 3 Cup
                                                                                                                                                                                                  Do not risk a fuel system failure mid-session. The Goodridge Tee to fuel rail hose is crucial for the reliability of your Clio 3 x85 Cup . Keeping a worn or inadequate hose directly exposes your engine to critical fuel starvation or severe leak risks. Permanently secure your injection system with this high-precision...
                                                                                                                                                                                                  €69.56Price
                                                                                                                                                                                                  Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                                                                      €4.16Price
                                                                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                                                                          Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                                                                          €4.16Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €407.03 Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €407.03 Price
                                                                                                                                                                                                          New Genuine Renault Starter Motor - Clio 4 RS (All Phases)
                                                                                                                                                                                                              Ensure an instantaneous start for your Renault Clio 4 RS (all phases) with this brand-new genuine Renault starter motor . Unlike remanufactured units, this 100% new product guarantees maximum reliability and increased longevity for your 1.6 Turbo engine. Don't risk an immobilizing breakdown—choose manufacturer...
                                                                                                                                                                                                              €407.03Price
                                                                                                                                                                                                              New Genuine Renault Starter Motor - Clio 4 RS (All Phases)
                                                                                                                                                                                                                  Ensure an instantaneous start for your Renault Clio 4 RS (all phases) with this brand-new genuine Renault starter motor . Unlike remanufactured units, this 100% new product guarantees maximum reliability and increased longevity for your 1.6 Turbo engine. Don't risk an immobilizing breakdown—choose manufacturer...
                                                                                                                                                                                                                  €407.03Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €77.12 Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €77.12 Price
                                                                                                                                                                                                                  Power Distribution Box & Starter Fuse Renault Megane 3 RSPower Distribution Box & Starter Fuse Renault Megane 3 RS
                                                                                                                                                                                                                      Do not let a minor electrical failure lead to a major breakdown. This genuine Renault power distribution box is a critical component of your Renault Megane 3 RS starting circuit. Integrating essential high-power fuses , specifically for the starter motor and alternator protection, it ensures secure energy management from your...
                                                                                                                                                                                                                      €77.12Price
                                                                                                                                                                                                                      Power Distribution Box & Starter Fuse Renault Megane 3 RSPower Distribution Box & Starter Fuse Renault Megane 3 RS
                                                                                                                                                                                                                          Do not let a minor electrical failure lead to a major breakdown. This genuine Renault power distribution box is a critical component of your Renault Megane 3 RS starting circuit. Integrating essential high-power fuses , specifically for the starter motor and alternator protection, it ensures secure energy management from your...
                                                                                                                                                                                                                          €77.12Price
                                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                                          €188.74 Price
                                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                                          €188.74 Price
                                                                                                                                                                                                                          Jauge pompe Clio 2 RS 1
                                                                                                                                                                                                                              Jauge pompe Clio 2 RS 1 Modele spécifique ayant le régulateur sur la pompe
                                                                                                                                                                                                                              €188.74Price
                                                                                                                                                                                                                              Jauge pompe Clio 2 RS 1
                                                                                                                                                                                                                                  Jauge pompe Clio 2 RS 1 Modele spécifique ayant le régulateur sur la pompe
                                                                                                                                                                                                                                  €188.74Price
                                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                                  €272.90 Price
                                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                                  €272.90 Price