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: Allumage
  • Categories: Circuit d'air
En Stock
€121.85 Price
En Stock
€121.85 Price
Genuine Renault Idle Actuator - Clio 2 RS Phase 1Genuine Renault Idle Actuator - Clio 2 RS Phase 1
      Restore perfect engine idle speed stability to your Renault Clio 2 RS Phase 1 with this genuine Renault idle actuator . An essential part often responsible for unstable idling , stalling, or difficult starting, it guarantees optimal performance for your F4R engine. Don't compromise the reliability of your sports car for a simple faulty sensor.
      €121.85Price
      Genuine Renault Idle Actuator - Clio 2 RS Phase 1Genuine Renault Idle Actuator - Clio 2 RS Phase 1
          Restore perfect engine idle speed stability to your Renault Clio 2 RS Phase 1 with this genuine Renault idle actuator . An essential part often responsible for unstable idling , stalling, or difficult starting, it guarantees optimal performance for your F4R engine. Don't compromise the reliability of your sports car for a simple faulty sensor.
          €121.85Price
          En Stock
          €115.33 Price
          En Stock
          €115.33 Price
          Tuyau entrée reservoir / passe cloison Twingo R2Tuyau entrée reservoir / passe cloison Twingo R2
              Tuyau entrée reservoir / passe cloison Twingo R2
              €115.33Price
              Tuyau entrée reservoir / passe cloison Twingo R2Tuyau entrée reservoir / passe cloison Twingo R2
                  Tuyau entrée reservoir / passe cloison Twingo R2
                  €115.33Price
                  Joint de boitier papillon
                    • Pack
                    The mechanical throttle body gasket is a quality part essential for optimizing the operation of your Renault Clio 2 RS Phase 1, Clio Gr N , or Clio 2 X65 Cup . Ensure perfect sealing and maintain your engine's performance with this reliable replacement gasket.
                    €7.93Price
                    Joint de boitier papillon
                      • Pack
                      The mechanical throttle body gasket is a quality part essential for optimizing the operation of your Renault Clio 2 RS Phase 1, Clio Gr N , or Clio 2 X65 Cup . Ensure perfect sealing and maintain your engine's performance with this reliable replacement gasket.
                      €7.93Price
                      Cablage liaison répartiteur sortie coupe circuit Megane N4
                          Cablage liaison répartiteur sortie coupe circuit Megane N4
                          €25.66Price
                          Cablage liaison répartiteur sortie coupe circuit Megane N4
                              Cablage liaison répartiteur sortie coupe circuit Megane N4
                              €25.66Price
                              Câble liaison batterie entrée coupe circuit Megane N4
                                  Câble liaison batterie entrée coupe circuit Megane N4
                                  €25.58Price
                                  Câble liaison batterie entrée coupe circuit Megane N4
                                      Câble liaison batterie entrée coupe circuit Megane N4
                                      €25.58Price
                                      En Stock
                                      €10.02 Price
                                      En Stock
                                      €10.02 Price
                                      Joint de cold side
                                          COLD SIDE SEAL – JTCOLD The cold side seal, reference JTCOLD , is a sealing component intended for use on the cold side of an air circuit. It helps provide an airtight connection between...
                                          €10.02Price
                                          Joint de cold side
                                              COLD SIDE SEAL – JTCOLD The cold side seal, reference JTCOLD , is a sealing component intended for use on the cold side of an air circuit. It helps provide an airtight connection between...
                                              €10.02Price
                                              Genuine Renault Camshaft Position Sensor – Clio 3 RS Ph2 & Megane 3 RSGenuine Renault Camshaft Position Sensor – Clio 3 RS Ph2 & Megane 3 RS
                                                  A key component for ignition and injection, this Genuine Renault Camshaft Position Sensor guarantees the accuracy of information transmitted to your sports car's ECU. Essential for the proper functioning of your Renault Clio 3 RS Phase 2, Clio 3 X85 Cup, and Renault Mégane 3 RS . Choose Manufacturer...
                                                  €76.50Price
                                                  Genuine Renault Camshaft Position Sensor – Clio 3 RS Ph2 & Megane 3 RSGenuine Renault Camshaft Position Sensor – Clio 3 RS Ph2 & Megane 3 RS
                                                      A key component for ignition and injection, this Genuine Renault Camshaft Position Sensor guarantees the accuracy of information transmitted to your sports car's ECU. Essential for the proper functioning of your Renault Clio 3 RS Phase 2, Clio 3 X85 Cup, and Renault Mégane 3 RS . Choose Manufacturer...
                                                      €76.50Price
                                                      En Stock
                                                      €4.20 Price
                                                      En Stock
                                                      €4.20 Price
                                                      Prise de bobine
                                                          This replacement coil plug is designed to replace faulty original coil plugs on Renault Clio 3 RS, Megane 2 RS, Megane 3 RS, and Twingo 2 RS. It ensures a reliable connection and optimal performance of the ignition system.
                                                          €4.20Price
                                                          Prise de bobine
                                                              This replacement coil plug is designed to replace faulty original coil plugs on Renault Clio 3 RS, Megane 2 RS, Megane 3 RS, and Twingo 2 RS. It ensures a reliable connection and optimal performance of the ignition system.
                                                              €4.20Price
                                                              Kit joint torique pour régulateur de pression de rampe
                                                                  Kit joint torique pour régulateur de pression de rampe
                                                                  €13.08Price
                                                                  Kit joint torique pour régulateur de pression de rampe
                                                                      Kit joint torique pour régulateur de pression de rampe
                                                                      €13.08Price
                                                                      Borne positive batterie Megane 3 RS et N4
                                                                          Ensure perfect electrical conductivity with this genuine Renault positive battery terminal . Specifically designed for the Renault Megane 3 RS and Megane N4 , this battery clamp guarantees reliable starting and a stable power supply for your onboard electronic equipment, even under intensive use. ...
                                                                          €10.58Price
                                                                          Borne positive batterie Megane 3 RS et N4
                                                                              Ensure perfect electrical conductivity with this genuine Renault positive battery terminal . Specifically designed for the Renault Megane 3 RS and Megane N4 , this battery clamp guarantees reliable starting and a stable power supply for your onboard electronic equipment, even under intensive use. ...
                                                                              €10.58Price
                                                                              En Stock
                                                                              €81.59 Price
                                                                              En Stock
                                                                              €81.59 Price
                                                                              Sonde lambda Clio 2 RS et X65 CupSonde lambda Clio 2 RS et X65 Cup
                                                                                  Sonde lambda Clio 2 RS et X65 Cup Convient en Aval des Clio 172 et pour chacunes des sondes pour la 182
                                                                                  €81.59Price
                                                                                  Sonde lambda Clio 2 RS et X65 CupSonde lambda Clio 2 RS et X65 Cup
                                                                                      Sonde lambda Clio 2 RS et X65 Cup Convient en Aval des Clio 172 et pour chacunes des sondes pour la 182
                                                                                      €81.59Price
                                                                                      En Stock
                                                                                      €21.91 €31.30 Regular price -30% off Price
                                                                                      En Stock
                                                                                      €21.91 €31.30 Regular price -30% off Price
                                                                                      Bougie origine Megane 4 GT 205Bougie origine Megane 4 GT 205
                                                                                          Bougie origine Megane 4 GT 205 Vendue à l'unité
                                                                                          €21.91€31.30Regular price-30% offPrice
                                                                                          Bougie origine Megane 4 GT 205Bougie origine Megane 4 GT 205
                                                                                              Bougie origine Megane 4 GT 205 Vendue à l'unité
                                                                                              €21.91€31.30Regular price-30% offPrice
                                                                                              En Stock
                                                                                              €233.69 Price
                                                                                              En Stock
                                                                                              €233.69 Price
                                                                                              Sonde lambda (oxygene) Clio 3 RSSonde lambda (oxygene) Clio 3 RS
                                                                                                  Sonde lambda (oxygene) Clio 3 RS 2 Modeles existent, la difference se situe au niveau des connecteurs des prises. Nous contacter pour confirmer la compatibilité
                                                                                                  €233.69Price
                                                                                                  Sonde lambda (oxygene) Clio 3 RSSonde lambda (oxygene) Clio 3 RS
                                                                                                      Sonde lambda (oxygene) Clio 3 RS 2 Modeles existent, la difference se situe au niveau des connecteurs des prises. Nous contacter pour confirmer la compatibilité
                                                                                                      €233.69Price
                                                                                                      Câble alimentation protection batterie Megane 3 RS et N4
                                                                                                          Câble alimentation protection batterie Megane 3 RS et N4
                                                                                                          €96.72Price
                                                                                                          Câble alimentation protection batterie Megane 3 RS et N4
                                                                                                              Câble alimentation protection batterie Megane 3 RS et N4
                                                                                                              €96.72Price
                                                                                                              En Stock
                                                                                                              €361.00 Price
                                                                                                              En Stock
                                                                                                              €361.00 Price
                                                                                                              Kit Admisssion Forge Motorsport Megane 4 RSKit Admisssion Forge Motorsport Megane 4 RS
                                                                                                                  Kit Admisssion Forge Motorsport Megane 4 RS Produit developpé dans le but de  - Garder des temperatures d'admission interessantes et les plus basses possibles - Ameliorer l'afflux d'air - Ameliorer l'esthetique de la baie moteur Apres de nombreux essais, les resultats obtenus sont + 15ch Ce gain peut etre superieur en associant ce kit...
                                                                                                                  €361.00Price
                                                                                                                  Kit Admisssion Forge Motorsport Megane 4 RSKit Admisssion Forge Motorsport Megane 4 RS
                                                                                                                      Kit Admisssion Forge Motorsport Megane 4 RS Produit developpé dans le but de  - Garder des temperatures d'admission interessantes et les plus basses possibles - Ameliorer l'afflux d'air - Ameliorer l'esthetique de la baie moteur Apres de nombreux essais, les resultats obtenus sont + 15ch Ce gain peut etre superieur en associant ce kit...
                                                                                                                      €361.00Price
                                                                                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                                                                                          Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                                                                                          €187.01Price
                                                                                                                          Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                                                                                              Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                                                                                              €187.01Price
                                                                                                                              En Stock
                                                                                                                              €32.92 Price
                                                                                                                              En Stock
                                                                                                                              €32.92 Price
                                                                                                                              Rampe injection Clio 2 RS 172 phase 2 et 182
                                                                                                                                  Fuel injection rail Renault Clio 2 RS Phase 2 & 3 Give your Renault Clio 2 RS Phase 2 or 3 an optimum fuel supply with the genuine Renault injection rail! Designed for sports driving enthusiasts, this rail guarantees a constant and precise fuel flow, even at high engine speeds, for optimum performance and an unrivalled driving experience. ...
                                                                                                                                  €32.92Price
                                                                                                                                  Rampe injection Clio 2 RS 172 phase 2 et 182
                                                                                                                                      Fuel injection rail Renault Clio 2 RS Phase 2 & 3 Give your Renault Clio 2 RS Phase 2 or 3 an optimum fuel supply with the genuine Renault injection rail! Designed for sports driving enthusiasts, this rail guarantees a constant and precise fuel flow, even at high engine speeds, for optimum performance and an unrivalled driving experience. ...
                                                                                                                                      €32.92Price
                                                                                                                                      Régulateur (membrane) pression gaz collecteur admission Clio 3 RS
                                                                                                                                          Régulateur pression gaz carter Clio 3 RS
                                                                                                                                          €61.60Price
                                                                                                                                          Régulateur (membrane) pression gaz collecteur admission Clio 3 RS
                                                                                                                                              €61.60Price
                                                                                                                                              En Stock
                                                                                                                                              €13.20 Price
                                                                                                                                              En Stock
                                                                                                                                              €13.20 Price
                                                                                                                                              Joint Plenum Clio 3 RSJoint Plenum Clio 3 RS
                                                                                                                                                  Joint Plenum Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
                                                                                                                                                  €13.20Price
                                                                                                                                                  Joint Plenum Clio 3 RSJoint Plenum Clio 3 RS
                                                                                                                                                      Joint Plenum Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
                                                                                                                                                      €13.20Price
                                                                                                                                                      Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                                                                                        • Pack
                                                                                                                                                        Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                                                                                        €269.74Price
                                                                                                                                                        Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                                                                                          • Pack
                                                                                                                                                          Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                                                                                          €269.74Price
                                                                                                                                                          Durite d'admission d'air Forge Motorsport Mégane 3 RSDurite d'admission d'air Forge Motorsport Mégane 3 RS
                                                                                                                                                              Durite d'admission d'air silicone Forge Motorsport qui se fixe en sortie de boite à air. Celle ce permet d'augmenter le débit d'air notamment grâce à un diamètre plus gros ainsi qu'une surface lisse interne. Se monte en lieu et place de celle d'origine Plusieurs couleurs disponibles
                                                                                                                                                              €159.77Price
                                                                                                                                                              Durite d'admission d'air Forge Motorsport Mégane 3 RSDurite d'admission d'air Forge Motorsport Mégane 3 RS
                                                                                                                                                                  Durite d'admission d'air silicone Forge Motorsport qui se fixe en sortie de boite à air. Celle ce permet d'augmenter le débit d'air notamment grâce à un diamètre plus gros ainsi qu'une surface lisse interne. Se monte en lieu et place de celle d'origine Plusieurs couleurs disponibles
                                                                                                                                                                  €159.77Price