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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: Allumage
  • Categories: Circuit d'eau
  • Categories: Préparation intérieure
  • Categories: Suralimentation (Turbo)
En Stock
€2.08 Price
En Stock
€2.08 Price
Collier serrage inox (durite) diametre 60-80mmCollier serrage inox (durite) diametre 60-80mm
      Collier serrage inox (durite) diametre 60-80mm Vendu à l'unité
      €2.08Price
      Collier serrage inox (durite) diametre 60-80mmCollier serrage inox (durite) diametre 60-80mm
          Collier serrage inox (durite) diametre 60-80mm Vendu à l'unité
          €2.08Price
          En Stock
          €116.83 Price
          En Stock
          €116.83 Price
          Jeu de segments pour piston origine Megane 3 RS
              Jeu de segments pour piston origine Megane 3 RS 1 Jeu comprend le necessaire pour 1 piston
              €116.83Price
              Jeu de segments pour piston origine Megane 3 RS
                  Jeu de segments pour piston origine Megane 3 RS 1 Jeu comprend le necessaire pour 1 piston
                  €116.83Price
                  En Stock
                  €266.00 Price
                  En Stock
                  €266.00 Price
                  Wasegate Forge Clio 4 RS
                      Optimize your boost management with the Forge Motorsport Wastegate for Renault Clio 4 RS (reference FMACRTRCT ). This piston-actuated turbo actuator is designed to provide significantly higher pressure stability than the factory unit. Essential for...
                      €266.00Price
                      Wasegate Forge Clio 4 RS
                          Optimize your boost management with the Forge Motorsport Wastegate for Renault Clio 4 RS (reference FMACRTRCT ). This piston-actuated turbo actuator is designed to provide significantly higher pressure stability than the factory unit. Essential for...
                          €266.00Price
                          Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                              Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                              €45.90Price
                              Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                  Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                  €45.90Price
                                  En Stock
                                  €34.73 €53.42 Regular price -35% off Price
                                  En Stock
                                  €34.73 €53.42 Regular price -35% off Price
                                  Bougie origine
                                      The genuine RENAULT Spark Plug , sold individually and an original manufacturer part, is essential for maintaining optimal performance in your Renault Megane 4 RS or Alpine A110 . Ensure perfect ignition and efficient combustion by choosing RENAULT quality.
                                      €34.73€53.42Regular price-35% offPrice
                                      Bougie origine
                                          The genuine RENAULT Spark Plug , sold individually and an original manufacturer part, is essential for maintaining optimal performance in your Renault Megane 4 RS or Alpine A110 . Ensure perfect ignition and efficient combustion by choosing RENAULT quality.
                                          €34.73€53.42Regular price-35% offPrice
                                          En Stock
                                          €31.01 Price
                                          En Stock
                                          €31.01 Price
                                              Kit colliers pour kit durites d'eau Forge Clio 2 RS
                                              €31.01Price
                                                  Kit colliers pour kit durites d'eau Forge Clio 2 RS
                                                  €31.01Price
                                                  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
                                                                  En Stock
                                                                  €5.63 Price
                                                                  En Stock
                                                                  €5.63 Price
                                                                  Joint de queue de soupape
                                                                      Joint de queue de soupape Attention pour Megane 3 RS les joints sont différents entre admission et échappement Vendu à l'unité
                                                                      €5.63Price
                                                                      Joint de queue de soupape
                                                                          Joint de queue de soupape Attention pour Megane 3 RS les joints sont différents entre admission et échappement Vendu à l'unité
                                                                          €5.63Price
                                                                          Tampon inférieur radiateur Clio 3 RS y compris R3 et X85 CupTampon inférieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                              Tampon inférieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                              €7.19Price
                                                                              Tampon inférieur radiateur Clio 3 RS y compris R3 et X85 CupTampon inférieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                  Tampon inférieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                  €7.19Price
                                                                                  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
                                                                                          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
                                                                                                  Tampon supérieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                                      Tampon supérieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                                      €7.96Price
                                                                                                      Tampon supérieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                                          Tampon supérieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                                          €7.96Price
                                                                                                          Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                              Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                              €37.90Price
                                                                                                              Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                  Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                  €37.90Price
                                                                                                                  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
                                                                                                                                  €1.00 Price
                                                                                                                                  En Stock
                                                                                                                                  €1.00 Price
                                                                                                                                  Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                      Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                      €1.00Price
                                                                                                                                      Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                          Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                          €1.00Price
                                                                                                                                          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
                                                                                                                                                  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
                                                                                                                                                          €15.49 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €15.49 Price
                                                                                                                                                          bague étanchéité bobine crayon
                                                                                                                                                              The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                              €15.49Price
                                                                                                                                                              bague étanchéité bobine crayon
                                                                                                                                                                  The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                                  €15.49Price
                                                                                                                                                                  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
                                                                                                                                                                          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
                                                                                                                                                                                  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
                                                                                                                                                                                                                  €14.20 Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €14.20 Price
                                                                                                                                                                                                                  Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110
                                                                                                                                                                                                                      Do not risk catastrophic engine failure due to a coolant leak. This genuine Renault water pump gasket (certified OEM part) is the only component calibrated to guarantee absolute sealing of your high-performance engine's thermal circuit. Specifically engineered for the demanding engines of the Renault Megane 4 RS ,...
                                                                                                                                                                                                                      €14.20Price
                                                                                                                                                                                                                      Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110
                                                                                                                                                                                                                          Do not risk catastrophic engine failure due to a coolant leak. This genuine Renault water pump gasket (certified OEM part) is the only component calibrated to guarantee absolute sealing of your high-performance engine's thermal circuit. Specifically engineered for the demanding engines of the Renault Megane 4 RS ,...
                                                                                                                                                                                                                          €14.20Price
                                                                                                                                                                                                                          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
                                                                                                                                                                                                                                  €309.00 Price
                                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                                  €309.00 Price
                                                                                                                                                                                                                                  Complete Silicone Coolant Hose Kit Renault Mégane 2 RSComplete Silicone Coolant Hose Kit Renault Mégane 2 RS
                                                                                                                                                                                                                                      Complete Silicone Coolant Hose Kit – Renault Mégane 2 RS Complete silicone coolant hose kit designed for compatible Renault Mégane 2 RS models. The kit is intended to replace the corresponding hoses in the engine cooling system. Check the engine version and cooling system configuration before ordering.
                                                                                                                                                                                                                                      €309.00Price
                                                                                                                                                                                                                                      Complete Silicone Coolant Hose Kit Renault Mégane 2 RSComplete Silicone Coolant Hose Kit Renault Mégane 2 RS
                                                                                                                                                                                                                                          Complete Silicone Coolant Hose Kit – Renault Mégane 2 RS Complete silicone coolant hose kit designed for compatible Renault Mégane 2 RS models. The kit is intended to replace the corresponding hoses in the engine cooling system. Check the engine version and cooling system configuration before ordering.
                                                                                                                                                                                                                                          €309.00Price