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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: Kit Allègement
  • Categories: Préparation intérieure
  • Categories: Suralimentation (Turbo)
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
                  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
                          €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
                                  Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                      Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                      €41.95Price
                                      Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                          Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                          €41.95Price
                                          En Stock
                                          €199.00 Price
                                          En Stock
                                          €199.00 Price
                                          Kit suppression de direction assistéeKit suppression de direction assistée
                                              Kit suppression de direction assistée comprenant la poulie folle et son support.
                                              €199.00Price
                                              Kit suppression de direction assistéeKit suppression de direction assistée
                                                  Kit suppression de direction assistée comprenant la poulie folle et son support.
                                                  €199.00Price
                                                  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
                                                          €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
                                                                  €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
                                                                          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
                                                                                  €133.56 Price
                                                                                  En Stock
                                                                                  €133.56 Price
                                                                                  Piston équipé indice B (X82.70) Clio 3 RS et X85 Cup
                                                                                      Piston équipé indice B (X=82.70) Clio 3 RS et X85 Cup Piston d'origine
                                                                                      €133.56Price
                                                                                      Piston équipé indice B (X82.70) Clio 3 RS et X85 Cup
                                                                                          Piston équipé indice B (X=82.70) Clio 3 RS et X85 Cup Piston d'origine
                                                                                          €133.56Price
                                                                                          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
                                                                                                  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
                                                                                                                  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
                                                                                                                          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
                                                                                                                                  Interrupteur coup de poing Megane N4
                                                                                                                                      Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                                                                      €20.30Price
                                                                                                                                      Interrupteur coup de poing Megane N4
                                                                                                                                          Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                                                                          €20.30Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €28.99 Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €28.99 Price
                                                                                                                                              Do not risk a devastating thermal meltdown or valve breakage in your top end during track days or rally stages. This genuine MPI forged exhaust valve , sold individually and designed for a direct plug-and-play replacement, protects your Renault Clio Williams cylinder head from extreme combustion temperatures. Unlike factory-cast valves that oxidize and weaken...
                                                                                                                                              €28.99Price
                                                                                                                                                  Do not risk a devastating thermal meltdown or valve breakage in your top end during track days or rally stages. This genuine MPI forged exhaust valve , sold individually and designed for a direct plug-and-play replacement, protects your Renault Clio Williams cylinder head from extreme combustion temperatures. Unlike factory-cast valves that oxidize and weaken...
                                                                                                                                                  €28.99Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €28.99 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €28.99 Price
                                                                                                                                                      Do not risk a catastrophic engine failure on your F7R block during high-RPM driving. This genuine MPI forged intake valve , sold individually and designed for a direct drop-in replacement, is the essential safety component to protect the top end of your Renault Clio Williams . Unlike factory-cast valves that eventually fatigue under extreme thermal stress and...
                                                                                                                                                      €28.99Price
                                                                                                                                                          Do not risk a catastrophic engine failure on your F7R block during high-RPM driving. This genuine MPI forged intake valve , sold individually and designed for a direct drop-in replacement, is the essential safety component to protect the top end of your Renault Clio Williams . Unlike factory-cast valves that eventually fatigue under extreme thermal stress and...
                                                                                                                                                          €28.99Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €324.60 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €324.60 Price
                                                                                                                                                              Do not risk a drastic loss of compression or excessive oil consumption during your next stage. This official Renault Sport piston ring set (designed for one piston) is the only genuine solution calibrated to maintain absolute sealing in your Clio R3 MAX engine. ...
                                                                                                                                                              €324.60Price
                                                                                                                                                                  Do not risk a drastic loss of compression or excessive oil consumption during your next stage. This official Renault Sport piston ring set (designed for one piston) is the only genuine solution calibrated to maintain absolute sealing in your Clio R3 MAX engine. ...
                                                                                                                                                                  €324.60Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €678.06 Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €678.06 Price
                                                                                                                                                                      Do not risk a drop in compression or a major engine failure mid-stage. This official Renault Sport piston , supplied complete with its pin, is the only genuine component calibrated to restore the original performance of your Clio R3 MAX . Specifically...
                                                                                                                                                                      €678.06Price
                                                                                                                                                                          Do not risk a drop in compression or a major engine failure mid-stage. This official Renault Sport piston , supplied complete with its pin, is the only genuine component calibrated to restore the original performance of your Clio R3 MAX . Specifically...
                                                                                                                                                                          €678.06Price
                                                                                                                                                                          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
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €41.93 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €41.93 Price
                                                                                                                                                                                                      Do not sacrifice safety for performance. The Forge Motorsport Adaptive Cruise Control (ACC) bracket is the essential solution for Audi RS3 models equipped with the Forge FMINT4 intercooler. Perfect Compatibility : Developed exclusively for the FMINT4 intercooler. ...
                                                                                                                                                                                                      €41.93Price
                                                                                                                                                                                                          Do not sacrifice safety for performance. The Forge Motorsport Adaptive Cruise Control (ACC) bracket is the essential solution for Audi RS3 models equipped with the Forge FMINT4 intercooler. Perfect Compatibility : Developed exclusively for the FMINT4 intercooler. ...
                                                                                                                                                                                                          €41.93Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €53.36 Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €53.36 Price
                                                                                                                                                                                                          Soupape échappement Inconel Megane 3 RSHigh-Performance Inconel Exhaust Valve for Renault Megane 3 RS
                                                                                                                                                                                                              Don't compromise on the performance and reliability of your Renault Megane 3 RS ! Our Inconel exhaust valve , designed as a direct replacement for the original, is crucial for preserving your engine's integrity under extreme stress. An essential investment for the durability and power of your sports vehicle.
                                                                                                                                                                                                              €53.36Price
                                                                                                                                                                                                              Soupape échappement Inconel Megane 3 RSHigh-Performance Inconel Exhaust Valve for Renault Megane 3 RS
                                                                                                                                                                                                                  Don't compromise on the performance and reliability of your Renault Megane 3 RS ! Our Inconel exhaust valve , designed as a direct replacement for the original, is crucial for preserving your engine's integrity under extreme stress. An essential investment for the durability and power of your sports vehicle.
                                                                                                                                                                                                                  €53.36Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €3.49 Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €3.49 Price
                                                                                                                                                                                                                  Bouchon obturateur cylindre coté embrayage Clio 2 RSBouchon obturateur cylindre coté embrayage Clio 2 RS
                                                                                                                                                                                                                      Bouchon obturateur cylindre coté embrayage Clio 2 RS
                                                                                                                                                                                                                      €3.49Price
                                                                                                                                                                                                                      Bouchon obturateur cylindre coté embrayage Clio 2 RSBouchon obturateur cylindre coté embrayage Clio 2 RS
                                                                                                                                                                                                                          Bouchon obturateur cylindre coté embrayage Clio 2 RS
                                                                                                                                                                                                                          €3.49Price