Pensez à sélectionner votre vehicule pour limiter les resultats de recherche

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.

Active filters

  • Categories: Alimentation
  • Categories: Circuit d'air
  • Categories: Préparation intérieure
  • Categories: Refroidissement
Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
      Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
      €217.02Price
      Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
          Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
          €217.02Price
          Tuyau carburant entre coupling Goodridge et rampe Megane N4
              Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
              €146.16Price
              Tuyau carburant entre coupling Goodridge et rampe Megane N4
                  Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                  €146.16Price
                  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
                          €1.37 Price
                          En Stock
                          €1.37 Price
                          Collier serrage inox (durite) diametre 30-45mm
                              Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                              €1.37Price
                              Collier serrage inox (durite) diametre 30-45mm
                                  Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                  €1.37Price
                                  En Stock
                                  €25.61 Price
                                  En Stock
                                  €25.61 Price
                                  Filtre à air origine Clio 2 RS
                                      Filtre à air origine Clio 2 RS Véritable produit d'origine Ne convient pas à la boite a air cylindrique des clio RS1
                                      €25.61Price
                                      Filtre à air origine Clio 2 RS
                                          Filtre à air origine Clio 2 RS Véritable produit d'origine Ne convient pas à la boite a air cylindrique des clio RS1
                                          €25.61Price
                                          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
                                                  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
                                                          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
                                                                                                                                                  €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
                                                                                                                                                          €13.57 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €13.57 Price
                                                                                                                                                              Buse de diffusion 0.5mm Clio 4 X98 Cup et R3T Référence: 8201489621
                                                                                                                                                              €13.57Price
                                                                                                                                                                  Buse de diffusion 0.5mm Clio 4 X98 Cup et R3T Référence: 8201489621
                                                                                                                                                                  €13.57Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €12.71 Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €12.71 Price
                                                                                                                                                                      Porte filtre 200μ Clio 4 X98 R3T et Cup Référence: 8201489625
                                                                                                                                                                      €12.71Price
                                                                                                                                                                          Porte filtre 200μ Clio 4 X98 R3T et Cup Référence: 8201489625
                                                                                                                                                                          €12.71Price
                                                                                                                                                                          Dispo selon configuration
                                                                                                                                                                          €207.73 Price
                                                                                                                                                                          Dispo selon configuration
                                                                                                                                                                          €207.73 Price
                                                                                                                                                                          Admission Forge Clio 4 RS Euro 5
                                                                                                                                                                              Ce kit est spécialement conçu pour la Renault Clio 4 RS Turbo. Il comprend le tuyau de silicone conçu sur mesure combiné avec un haut débit filtre de cône non huilée en coton permettant une excellente filtration. Tout le nécessaire est fourni dans le kit, y compris les colliers en acier inoxydable de qualité. Ce kit a été testé et permet un gain jusque 4 chevaux; ce gain peut être amplifier...
                                                                                                                                                                              €207.73Price
                                                                                                                                                                              Admission Forge Clio 4 RS Euro 5
                                                                                                                                                                                  Ce kit est spécialement conçu pour la Renault Clio 4 RS Turbo. Il comprend le tuyau de silicone conçu sur mesure combiné avec un haut débit filtre de cône non huilée en coton permettant une excellente filtration. Tout le nécessaire est fourni dans le kit, y compris les colliers en acier inoxydable de qualité. Ce kit a été testé et permet un gain jusque 4 chevaux; ce gain peut être amplifier...
                                                                                                                                                                                  €207.73Price
                                                                                                                                                                                  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
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €15.34 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €15.34 Price
                                                                                                                                                                                          Vis fixation chapeau palier vilebrequin à l'unité
                                                                                                                                                                                              This genuine Renault crankshaft bearing cap bolt is designed to ensure a solid and durable attachment of the crankshaft bearing in your engine. Precision-machined and manufactured to the highest standards, it ensures optimal performance and extends the lifespan of your engine.
                                                                                                                                                                                              €15.34Price
                                                                                                                                                                                              Vis fixation chapeau palier vilebrequin à l'unité
                                                                                                                                                                                                  This genuine Renault crankshaft bearing cap bolt is designed to ensure a solid and durable attachment of the crankshaft bearing in your engine. Precision-machined and manufactured to the highest standards, it ensures optimal performance and extends the lifespan of your engine.
                                                                                                                                                                                                  €15.34Price
                                                                                                                                                                                                  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
                                                                                                                                                                                                          €131.69 Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €131.69 Price
                                                                                                                                                                                                              Coussinets de Bielles Trimetal Twingo 2 RS
                                                                                                                                                                                                              €131.69Price
                                                                                                                                                                                                                  Coussinets de Bielles Trimetal Twingo 2 RS
                                                                                                                                                                                                                  €131.69Price