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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: Kit Allègement
  • Categories: Préparation intérieure
  • Categories: Suralimentation (Turbo)
NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
      Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
      €26.77Price
      NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
          Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
          €26.77Price
          En Stock
          €24.00 €30.00 Regular price -20% off Price
          En Stock
          €24.00 €30.00 Regular price -20% off Price
          Jeu de Bougies Renault Clio Williams
              Jeu de Bougies Renault Clio Williams Véritable produit d'origine
              €24.00€30.00Regular price-20% offPrice
              Jeu de Bougies Renault Clio Williams
                  Jeu de Bougies Renault Clio Williams Véritable produit d'origine
                  €24.00€30.00Regular price-20% offPrice
                  En Stock
                  €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
                          €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
                                  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
                                          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
                                                  €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
                                                          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
                                                                  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
                                                                          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
                                                                                                          €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
                                                                                                                                          €1,390.00 Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €1,390.00 Price
                                                                                                                                          Kit échangeur Wagner Tuning Toyota Yaris GR avec tubulureKit échangeur Wagner Tuning Toyota Yaris GR avec tubulure
                                                                                                                                              Kit échangeur Wagner Tuning Toyota Yaris GR avec tubulure L'intercooler hautes performances WAGNERTUNING dispose d'un nouveau type de filet de compétition (tube fin) aux dimensions <br style="color:#06142e;font-family:'Open Sans', Helvetica, Arial,...
                                                                                                                                              €1,390.00Price
                                                                                                                                              Kit échangeur Wagner Tuning Toyota Yaris GR avec tubulureKit échangeur Wagner Tuning Toyota Yaris GR avec tubulure
                                                                                                                                                  Kit échangeur Wagner Tuning Toyota Yaris GR avec tubulure L'intercooler hautes performances WAGNERTUNING dispose d'un nouveau type de filet de compétition (tube fin) aux dimensions <br style="color:#06142e;font-family:'Open Sans', Helvetica, Arial,...
                                                                                                                                                  €1,390.00Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €265.07 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €265.07 Price
                                                                                                                                                  • New
                                                                                                                                                    Don't risk damaging your sports car engine or suffering from increased fuel consumption. The genuine RENAULT front upstream oxygen lambda sensor for Clio 4 RS guarantees absolute air/fuel mixture accuracy, preserving optimal performance and the 1.6 Turbo engine of your vehicle. Genuine RENAULT OEM part :...
                                                                                                                                                    €265.07Price
                                                                                                                                                    • New
                                                                                                                                                      Don't risk damaging your sports car engine or suffering from increased fuel consumption. The genuine RENAULT front upstream oxygen lambda sensor for Clio 4 RS guarantees absolute air/fuel mixture accuracy, preserving optimal performance and the 1.6 Turbo engine of your vehicle. Genuine RENAULT OEM part :...
                                                                                                                                                      €265.07Price
                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                      €2,930.00 Price
                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                      €2,930.00 Price
                                                                                                                                                      Kit Intercooler (Echangeur) Wagner Porsche 991 TURBO et TURBO SWagner Performance Intercooler Kit - Porsche 991 Turbo & Turbo S
                                                                                                                                                          Preserve the full power output of your twin-turbocharged engine with the Wagner Intercooler Kit for Porsche 991 Turbo and Turbo S . This high-performance cooling system features a significantly larger core volume compared to stock to drastically lower intake air temperatures...
                                                                                                                                                          €2,930.00Price
                                                                                                                                                          Kit Intercooler (Echangeur) Wagner Porsche 991 TURBO et TURBO SWagner Performance Intercooler Kit - Porsche 991 Turbo & Turbo S
                                                                                                                                                              Preserve the full power output of your twin-turbocharged engine with the Wagner Intercooler Kit for Porsche 991 Turbo and Turbo S . This high-performance cooling system features a significantly larger core volume compared to stock to drastically lower intake air temperatures...
                                                                                                                                                              €2,930.00Price
                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                              €43.46 Price
                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                              €43.46 Price
                                                                                                                                                              Conduit air sortie vanne régulation Clio 4 RSConduit air sortie vanne régulation Clio 4 RS
                                                                                                                                                                  Conduit air sortie vanne régulation Clio 4 RS
                                                                                                                                                                  €43.46Price
                                                                                                                                                                  Conduit air sortie vanne régulation Clio 4 RSConduit air sortie vanne régulation Clio 4 RS
                                                                                                                                                                      Conduit air sortie vanne régulation Clio 4 RS
                                                                                                                                                                      €43.46Price
                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                      €319.00 Price
                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                      €319.00 Price
                                                                                                                                                                      Mechanical A/C Delete Kit Renault Clio 4 RS / Mégane 4 RS / Alpine A110Mechanical A/C Delete Kit Renault Clio 4 RS / Mégane 4 RS / Alpine A110
                                                                                                                                                                          The Optimiz Access Mechanical A/C Delete Kit is the essential core component for lightening your sports vehicle. Designed specifically for the Renault Clio 4 RS , Renault Mégane 4 RS , and the Alpine A110 , this kit allows you to replace the A/C compressor with a high-quality fixed...
                                                                                                                                                                          €319.00Price
                                                                                                                                                                          Mechanical A/C Delete Kit Renault Clio 4 RS / Mégane 4 RS / Alpine A110Mechanical A/C Delete Kit Renault Clio 4 RS / Mégane 4 RS / Alpine A110
                                                                                                                                                                              The Optimiz Access Mechanical A/C Delete Kit is the essential core component for lightening your sports vehicle. Designed specifically for the Renault Clio 4 RS , Renault Mégane 4 RS , and the Alpine A110 , this kit allows you to replace the A/C compressor with a high-quality fixed...
                                                                                                                                                                              €319.00Price
                                                                                                                                                                              Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure origineDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure origine
                                                                                                                                                                                  Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur. Non compatible avec les tubulures Forge
                                                                                                                                                                                  €17.40Price
                                                                                                                                                                                  Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure origineDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure origine
                                                                                                                                                                                      Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur. Non compatible avec les tubulures Forge
                                                                                                                                                                                      €17.40Price
                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                      €384.00 Price
                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                      €384.00 Price
                                                                                                                                                                                      Kit Suppression de Clim Clio 3 RS - Megane 2 RS -  Megane 3 RSAC Delete Kit with Freewheel Pulley for Renault Clio 3 RS, Megane 2 RS, and Megane 3 RS
                                                                                                                                                                                          Enhance the power-to-weight ratio of your Renault Clio 3 RS, Megane 2 RS, or Megane 3 RS with our complete AC delete kit. Replace the AC compressor with a smooth-running freewheel pulley, and enjoy noticeable weight reduction and improved engine responsiveness. Includes all necessary components, including the accessory belt.
                                                                                                                                                                                          €384.00Price
                                                                                                                                                                                          Kit Suppression de Clim Clio 3 RS - Megane 2 RS -  Megane 3 RSAC Delete Kit with Freewheel Pulley for Renault Clio 3 RS, Megane 2 RS, and Megane 3 RS
                                                                                                                                                                                              Enhance the power-to-weight ratio of your Renault Clio 3 RS, Megane 2 RS, or Megane 3 RS with our complete AC delete kit. Replace the AC compressor with a smooth-running freewheel pulley, and enjoy noticeable weight reduction and improved engine responsiveness. Includes all necessary components, including the accessory belt.
                                                                                                                                                                                              €384.00Price
                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                              €133.39 Price
                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                              €133.39 Price
                                                                                                                                                                                              Joint de Culasse renforcé Cometic Megane 2 RS 1.3mm
                                                                                                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.3 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alésages et épaisseur disponibles, nous contacter.
                                                                                                                                                                                                  €133.39Price
                                                                                                                                                                                                  Joint de Culasse renforcé Cometic Megane 2 RS 1.3mm
                                                                                                                                                                                                      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.3 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alésages et épaisseur disponibles, nous contacter.
                                                                                                                                                                                                      €133.39Price
                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                      €154.22 Price
                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                      €154.22 Price
                                                                                                                                                                                                      Poulie Damper Non Amortie Clio 2 RS
                                                                                                                                                                                                          Poulie Damper Rigide pour Clio 2 RS. Poids: 530 Grs Poulie avec 4 dents de large nécessitant une autre courroie que celle d'origine.
                                                                                                                                                                                                          €154.22Price
                                                                                                                                                                                                          Poulie Damper Non Amortie Clio 2 RS
                                                                                                                                                                                                              Poulie Damper Rigide pour Clio 2 RS. Poids: 530 Grs Poulie avec 4 dents de large nécessitant une autre courroie que celle d'origine.
                                                                                                                                                                                                              €154.22Price