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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)
Collection de 3 segments pour piston Twingo RS R1 et R2 160
      Original RENAULT Piston Ring Set for Twingo 2 RS (for 1 piston) Do not compromise the compression and power of your Twingo 2 RS engine. This original RENAULT piston...
      €68.32Price
      Collection de 3 segments pour piston Twingo RS R1 et R2 160
          Original RENAULT Piston Ring Set for Twingo 2 RS (for 1 piston) Do not compromise the compression and power of your Twingo 2 RS engine. This original RENAULT piston...
          €68.32Price
          En Stock
          €265.70 Price
          En Stock
          €265.70 Price
          Fuel Gauge/Pump Module Clio 3 RS/R3/Cup - Original
              The original Renault fuel gauge/pump module is an essential part to ensure a reliable and precise fuel supply on your Renault Clio 3 RS , Renault Clio R3 , and Renault Clio 3 X85 Cup . It guarantees accurate fuel level measurement and constant pressure, indispensable for optimal performance. We ship worldwide.
              €265.70Price
              Fuel Gauge/Pump Module Clio 3 RS/R3/Cup - Original
                  The original Renault fuel gauge/pump module is an essential part to ensure a reliable and precise fuel supply on your Renault Clio 3 RS , Renault Clio R3 , and Renault Clio 3 X85 Cup . It guarantees accurate fuel level measurement and constant pressure, indispensable for optimal performance. We ship worldwide.
                  €265.70Price
                  En Stock
                  €25.69 Price
                  En Stock
                  €25.69 Price
                  Vis Banjo alimentation rampe Twingo R1 et R2
                      Vis Banjo alimentation rampe Twingo R1 et R2 Référence: 7711129199
                      €25.69Price
                      Vis Banjo alimentation rampe Twingo R1 et R2
                          Vis Banjo alimentation rampe Twingo R1 et R2 Référence: 7711129199
                          €25.69Price
                          En Stock
                          €119.28 Price
                          En Stock
                          €119.28 Price
                          Capteur pédale accélérateur Clio 3 RS
                              Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                              €119.28Price
                              Capteur pédale accélérateur Clio 3 RS
                                  Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                  €119.28Price
                                  En Stock
                                  €139.14 Price
                                  En Stock
                                  €139.14 Price
                                  Piston équipé C (X82.70) Clio 3 RS
                                      The Renault complete piston (index C) is an original part, supplied with pin and pin clips, designed for your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal engine performance and increased reliability.
                                      €139.14Price
                                      Piston équipé C (X82.70) Clio 3 RS
                                          The Renault complete piston (index C) is an original part, supplied with pin and pin clips, designed for your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal engine performance and increased reliability.
                                          €139.14Price
                                          En Stock
                                          €546.20 Price
                                          En Stock
                                          €546.20 Price
                                          Alternateur Clio 3 RS y compris X85 Cup et R3
                                              Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                              €546.20Price
                                              Alternateur Clio 3 RS y compris X85 Cup et R3
                                                  Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                  €546.20Price
                                                  Dump Valve ouverte Forge Megane 4 RSDump Valve ouverte Forge Megane 4 RS
                                                      Dump Valve ouverte Forge Megane 4 RS Permet de faire le bruit de decharge du turbo fortement apprécié.
                                                      €299.00Price
                                                      Dump Valve ouverte Forge Megane 4 RSDump Valve ouverte Forge Megane 4 RS
                                                          Dump Valve ouverte Forge Megane 4 RS Permet de faire le bruit de decharge du turbo fortement apprécié.
                                                          €299.00Price
                                                          En Stock
                                                          €98.33 Price
                                                          En Stock
                                                          €98.33 Price
                                                          Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                              Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                              €98.33Price
                                                              Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                  Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                  €98.33Price
                                                                  Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv
                                                                      Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv Référence: 8200329496
                                                                      €194.51Price
                                                                      Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv
                                                                          Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv Référence: 8200329496
                                                                          €194.51Price
                                                                          En Stock
                                                                          €1.10 Price
                                                                          En Stock
                                                                          €1.10 Price
                                                                          Collier serrage inox (durite) diametre 20-32mm
                                                                              Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                              €1.10Price
                                                                              Collier serrage inox (durite) diametre 20-32mm
                                                                                  Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                  €1.10Price
                                                                                  Linguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RSLinguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RS
                                                                                      Linguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RSVéritable produit d'origine
                                                                                      €90.76Price
                                                                                      Linguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RSLinguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RS
                                                                                          Linguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RSVéritable produit d'origine
                                                                                          €90.76Price
                                                                                          En Stock
                                                                                          €130.37 Price
                                                                                          En Stock
                                                                                          €130.37 Price
                                                                                          Capteur pression de suralimentation Megane 3 RS
                                                                                              Capteur pression de suralimentation Megane 3 RS Véritable produit d'origine
                                                                                              €130.37Price
                                                                                              Capteur pression de suralimentation Megane 3 RS
                                                                                                  Capteur pression de suralimentation Megane 3 RS Véritable produit d'origine
                                                                                                  €130.37Price
                                                                                                  Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                      Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                      €173.57Price
                                                                                                      Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                          Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                          €173.57Price
                                                                                                          En Stock
                                                                                                          €5.66 Price
                                                                                                          En Stock
                                                                                                          €5.66 Price
                                                                                                          Vis de fixation galet enrouleur de distribution K4MVis de fixation galet enrouleur de distribution K4M
                                                                                                              Vis de fixation galet enrouleur de distribution K4M 8200581340
                                                                                                              €5.66Price
                                                                                                              Vis de fixation galet enrouleur de distribution K4MVis de fixation galet enrouleur de distribution K4M
                                                                                                                  Vis de fixation galet enrouleur de distribution K4M 8200581340
                                                                                                                  €5.66Price
                                                                                                                  En Stock
                                                                                                                  €1.30 Price
                                                                                                                  En Stock
                                                                                                                  €1.30 Price
                                                                                                                  Collier serrage inox (durite) diametre 25-40mm
                                                                                                                      Collier serrage inox (durite) diametre 25-40mm Vendu à l'unité
                                                                                                                      €1.30Price
                                                                                                                      Collier serrage inox (durite) diametre 25-40mm
                                                                                                                          Collier serrage inox (durite) diametre 25-40mm Vendu à l'unité
                                                                                                                          €1.30Price
                                                                                                                          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
                                                                                                                                  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