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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: Allumage
  • Categories: Kit Allègement
  • Categories: Préparation intérieure
En Stock
€199.00 Price
En Stock
€199.00 Price
Kit suppression de direction assistéeKit suppression de direction assistée
      Kit suppression de direction assistée comprenant la poulie folle et son support.
      €199.00Price
      Kit suppression de direction assistéeKit suppression de direction assistée
          Kit suppression de direction assistée comprenant la poulie folle et son support.
          €199.00Price
          En Stock
          €12.78 Price
          En Stock
          €12.78 Price
          Tuyau essence vapeur canister Ø8 Megane N4Tuyau essence vapeur canister Ø8 Megane N4
              Tuyau essence vapeur canister Ø8 Megane N4 Référence: 7711167251
              €12.78Price
              Tuyau essence vapeur canister Ø8 Megane N4Tuyau essence vapeur canister Ø8 Megane N4
                  Tuyau essence vapeur canister Ø8 Megane N4 Référence: 7711167251
                  €12.78Price
                  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
                          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
                                                                                  €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
                                                                                                                  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
                                                                                                                      €160.52 Price
                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                      €160.52 Price
                                                                                                                      Flexible à carburant Réservoir / Té Clio 3 CupFlexible à carburant Réservoir / Té Clio 3 Cup
                                                                                                                          Flexible à carburant Réservoir / Té Clio 3 Cup Référence: 7711162421
                                                                                                                          €160.52Price
                                                                                                                          Flexible à carburant Réservoir / Té Clio 3 CupFlexible à carburant Réservoir / Té Clio 3 Cup
                                                                                                                              Flexible à carburant Réservoir / Té Clio 3 Cup Référence: 7711162421
                                                                                                                              €160.52Price
                                                                                                                              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
                                                                                                                                      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
                                                                                                                                              €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
                                                                                                                                                      Jeu de 4 Fils de Bougies Magnecor Clio 2 RS 182Magnecor Reinforced Ignition Cable Set - Renault Clio 2 RS 172 & 182 hp
                                                                                                                                                          Boost the reliability of your ignition system on your Renault Clio 2 RS 172 or 182 hp with this Magnecor reinforced ignition cable set . Designed for the most demanding environments, these cables ensure optimal high-voltage transmission to your spark plugs, eliminating power losses and misfires. Don't let a tired original wire set compromise your F4R engine's performance.
                                                                                                                                                          €180.04Price
                                                                                                                                                          Jeu de 4 Fils de Bougies Magnecor Clio 2 RS 182Magnecor Reinforced Ignition Cable Set - Renault Clio 2 RS 172 & 182 hp
                                                                                                                                                              Boost the reliability of your ignition system on your Renault Clio 2 RS 172 or 182 hp with this Magnecor reinforced ignition cable set . Designed for the most demanding environments, these cables ensure optimal high-voltage transmission to your spark plugs, eliminating power losses and misfires. Don't let a tired original wire set compromise your F4R engine's performance.
                                                                                                                                                              €180.04Price
                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                              €95.00 Price
                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                              €95.00 Price
                                                                                                                                                              Pompe à essence gros Debit Clio 2 RSPompe à essence gros Debit Clio 2 RS
                                                                                                                                                                  Pompe à essence gros Debit Clio 2 RS Pression max: 8 bars Débit: 287L/H
                                                                                                                                                                  €95.00Price
                                                                                                                                                                  Pompe à essence gros Debit Clio 2 RSPompe à essence gros Debit Clio 2 RS
                                                                                                                                                                      Pompe à essence gros Debit Clio 2 RS Pression max: 8 bars Débit: 287L/H
                                                                                                                                                                      €95.00Price
                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                      €69.52 Price
                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                      €69.52 Price
                                                                                                                                                                      Joint de culasse Twingo RS y compris R1 et R2
                                                                                                                                                                          Joint de culasse Twingo RS y compris R1 et R2 Référence: 8200356346
                                                                                                                                                                          €69.52Price
                                                                                                                                                                          Joint de culasse Twingo RS y compris R1 et R2
                                                                                                                                                                              Joint de culasse Twingo RS y compris R1 et R2 Référence: 8200356346
                                                                                                                                                                              €69.52Price
                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                              €2.20 Price
                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                              €2.20 Price
                                                                                                                                                                              Clio 2 RS (X65 Cup, Gr N) Accelerator Cable Clip - OriginalClio 2 RS (X65 Cup, Gr N) Accelerator Cable Clip - Original
                                                                                                                                                                                  The original Renault accelerator cable clip is an essential fastening part to ensure precise and reliable accelerator operation on your Renault Clio 2 RS , Clio 2 X65 Cup , or Clio 2 Gr N . Ensure a secure connection and optimal accelerator response with this original quality clip. We ship worldwide.
                                                                                                                                                                                  €2.20Price
                                                                                                                                                                                  Clio 2 RS (X65 Cup, Gr N) Accelerator Cable Clip - OriginalClio 2 RS (X65 Cup, Gr N) Accelerator Cable Clip - Original
                                                                                                                                                                                      The original Renault accelerator cable clip is an essential fastening part to ensure precise and reliable accelerator operation on your Renault Clio 2 RS , Clio 2 X65 Cup , or Clio 2 Gr N . Ensure a secure connection and optimal accelerator response with this original quality clip. We ship worldwide.
                                                                                                                                                                                      €2.20Price
                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                      €161.10 Price
                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                      €161.10 Price
                                                                                                                                                                                      Joint de Culasse renforcé Cometic Megane 3 RS 2.18Joint de Culasse renforcé Cometic Megane 3 RS 2.18
                                                                                                                                                                                          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 2.18 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.
                                                                                                                                                                                          €161.10Price
                                                                                                                                                                                          Joint de Culasse renforcé Cometic Megane 3 RS 2.18Joint de Culasse renforcé Cometic Megane 3 RS 2.18
                                                                                                                                                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 2.18 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.
                                                                                                                                                                                              €161.10Price
                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                              €24.00 Price
                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                              €24.00 Price
                                                                                                                                                                                              Ressort de pompe à huile Clio 1 Gr NRessort de pompe à huile Clio 1 Gr N
                                                                                                                                                                                                  Véritable ressort de pompe à Huile de Clio Gr N. Fournisseur d'époque Convient à la Clio 16S, Clio Williams, 19 16S, Spider, Megane Coupé 2L 16s F7R
                                                                                                                                                                                                  €24.00Price
                                                                                                                                                                                                  Ressort de pompe à huile Clio 1 Gr NRessort de pompe à huile Clio 1 Gr N
                                                                                                                                                                                                      Véritable ressort de pompe à Huile de Clio Gr N. Fournisseur d'époque Convient à la Clio 16S, Clio Williams, 19 16S, Spider, Megane Coupé 2L 16s F7R
                                                                                                                                                                                                      €24.00Price