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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: Préparation intérieure
  • Categories: Refroidissement
  • Categories: Suralimentation (Turbo)
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
          €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
                          En Stock
                          €396.19 Price
                          En Stock
                          €396.19 Price
                          Module jauge pompe Megane 2 RSMegane 2 RS Fuel Gauge/Pump Module - Original
                              The original Renault fuel gauge/pump module is an essential part to ensure reliable and precise fuel supply on your Renault Megane 2 RS . Please note, there are two different assemblies for this vehicle. Contact us with your vehicle's VIN for accurate guidance.
                              €396.19Price
                              Module jauge pompe Megane 2 RSMegane 2 RS Fuel Gauge/Pump Module - Original
                                  The original Renault fuel gauge/pump module is an essential part to ensure reliable and precise fuel supply on your Renault Megane 2 RS . Please note, there are two different assemblies for this vehicle. Contact us with your vehicle's VIN for accurate guidance.
                                  €396.19Price
                                  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
                                          RENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hpRENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hp
                                              Optimize the performance of your Renault Twingo R2 EVO 195hp with this genuine RENAULT SPORT assembled cylinder head (ref. 7711167644). Supplied with valves, retainers, valve springs, rocker arms, and pushrods, this cylinder head is ready to be installed (camshafts not included). Guaranteed performance and reliability.
                                              €8,104.62Price
                                              RENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hpRENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hp
                                                  Optimize the performance of your Renault Twingo R2 EVO 195hp with this genuine RENAULT SPORT assembled cylinder head (ref. 7711167644). Supplied with valves, retainers, valve springs, rocker arms, and pushrods, this cylinder head is ready to be installed (camshafts not included). Guaranteed performance and reliability.
                                                  €8,104.62Price
                                                  Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                                      Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                                      €33.55Price
                                                      Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                                          Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                                          €33.55Price
                                                          En Stock
                                                          €1.37 Price
                                                          En Stock
                                                          €1.37 Price
                                                          Collier serrage inox (durite) diametre 30-45mm
                                                              Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                                              €1.37Price
                                                              Collier serrage inox (durite) diametre 30-45mm
                                                                  Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                                                  €1.37Price
                                                                  En Stock
                                                                  €55.68 Price
                                                                  En Stock
                                                                  €55.68 Price
                                                                  Tuyau 200-06 lg:300 connection rampe Tatuus
                                                                      Tuyau 200-06 lg:300 connection rampe Tatuus Réference: 7711155525
                                                                      €55.68Price
                                                                      Tuyau 200-06 lg:300 connection rampe Tatuus
                                                                          Tuyau 200-06 lg:300 connection rampe Tatuus Réference: 7711155525
                                                                          €55.68Price
                                                                          Sonde pression Twingo R2New Genuine Renault Sport Oil Pressure Sensor - Clio R3 & Twingo R2
                                                                              This new oil pressure sensor , from the Renault Sport competition catalog , is a vital safety part for the rally engines of the Renault Clio R3 and Twingo R2 . It is essential for monitoring lubrication and thereby preventing catastrophic engine failures caused by a lack or drop in oil pressure.
                                                                              €195.78Price
                                                                              Sonde pression Twingo R2New Genuine Renault Sport Oil Pressure Sensor - Clio R3 & Twingo R2
                                                                                  This new oil pressure sensor , from the Renault Sport competition catalog , is a vital safety part for the rally engines of the Renault Clio R3 and Twingo R2 . It is essential for monitoring lubrication and thereby preventing catastrophic engine failures caused by a lack or drop in oil pressure.
                                                                                  €195.78Price
                                                                                  Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                                                                                      Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                                                                                      €89.65Price
                                                                                      Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                                                                                          Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                                                                                          €89.65Price
                                                                                          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
                                                                                                  €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
                                                                                                          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
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €79.54 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €79.54 Price
                                                                                                                                                                                              Couvercle boitier sortie d'eau (calorstat) Clio 2 RS
                                                                                                                                                                                              €79.54Price
                                                                                                                                                                                                  Couvercle boitier sortie d'eau (calorstat) Clio 2 RS
                                                                                                                                                                                                  €79.54Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €24.00 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €24.00 Price
                                                                                                                                                                                                      Tuyau nitrile GOODRIDGE DASH 6 (le m) Le...
                                                                                                                                                                                                      €24.00Price
                                                                                                                                                                                                          Tuyau nitrile GOODRIDGE DASH 6 (le m) Le...
                                                                                                                                                                                                          €24.00Price