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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: Circuit d'air
  • Categories: Kit Allègement
  • Categories: Support moteur
Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
      The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
      €29.34Price
      Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
          The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
          €29.34Price
          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
                                                  Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                      Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                      €2.34Price
                                                      Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                          Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                          €2.34Price
                                                          Dispo selon configuration
                                                          €199.00 Price
                                                          Dispo selon configuration
                                                          €199.00 Price
                                                          Admission Forge Clio 4 RS Euro 6Admission Forge Clio 4 RS Euro 6
                                                              Ce kit est spécialement conçu pour la Renault Clio 4 RS Trophy (ne convient pas aux clio 4 RS non Trophy) 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...
                                                              €199.00Price
                                                              Admission Forge Clio 4 RS Euro 6Admission Forge Clio 4 RS Euro 6
                                                                  Ce kit est spécialement conçu pour la Renault Clio 4 RS Trophy (ne convient pas aux clio 4 RS non Trophy) 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...
                                                                  €199.00Price
                                                                  En Stock
                                                                  €50.86 Price
                                                                  En Stock
                                                                  €50.86 Price
                                                                  Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                      Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                      €50.86Price
                                                                      Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                          Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                          €50.86Price
                                                                          En Stock
                                                                          €178.04 Price
                                                                          En Stock
                                                                          €178.04 Price
                                                                          Pompe à Essence Clio 2 RS et X65 Cup
                                                                              Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                                              €178.04Price
                                                                              Pompe à Essence Clio 2 RS et X65 Cup
                                                                                  Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                                                  €178.04Price
                                                                                  DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                      Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                      €224.09Price
                                                                                      DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                          Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                          €224.09Price
                                                                                          Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                                                                              Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                                                                              €55.88Price
                                                                                              Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                                                                                  Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                                                                                  €55.88Price
                                                                                                  En Stock
                                                                                                  €81.58 Price
                                                                                                  En Stock
                                                                                                  €81.58 Price
                                                                                                  Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                                                                      Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                                                                      €81.58Price
                                                                                                      Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                                                                          Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                                                                          €81.58Price
                                                                                                          Divergent boitier filtre assemblé Twingo R2
                                                                                                              Optimize the air intake of your Renault Twingo R2 (195/205hp) with this official RENAULT SPORT air filter housing diverter . Developed for competition, this part with reference 7711167591 is essential for maximizing airflow and ensuring maximum engine power across the entire operating range. An indispensable addition for engine performance .
                                                                                                              €511.63Price
                                                                                                              Divergent boitier filtre assemblé Twingo R2
                                                                                                                  Optimize the air intake of your Renault Twingo R2 (195/205hp) with this official RENAULT SPORT air filter housing diverter . Developed for competition, this part with reference 7711167591 is essential for maximizing airflow and ensuring maximum engine power across the entire operating range. An indispensable addition for engine performance .
                                                                                                                  €511.63Price
                                                                                                                  En Stock
                                                                                                                  €10.57 €13.93 Regular price -€3.36 off Price
                                                                                                                  En Stock
                                                                                                                  €10.57 €13.93 Regular price -€3.36 off Price
                                                                                                                  Joint Collecteur Admission Clio 2 RS
                                                                                                                      Ensure vital engine sealing with this genuine Renault intake manifold gasket for the Clio 2 RS (172 and 182hp). This authentic component guarantees a perfect junction between the cylinder head and your manifold, preventing any parasitic air leaks that could degrade the performance of your F4R engine . Do not...
                                                                                                                      €10.57€13.93Regular price-€3.36 offPrice
                                                                                                                      Joint Collecteur Admission Clio 2 RS
                                                                                                                          Ensure vital engine sealing with this genuine Renault intake manifold gasket for the Clio 2 RS (172 and 182hp). This authentic component guarantees a perfect junction between the cylinder head and your manifold, preventing any parasitic air leaks that could degrade the performance of your F4R engine . Do not...
                                                                                                                          €10.57€13.93Regular price-€3.36 offPrice
                                                                                                                          Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                                                                                              Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                                                                                              €44.99Price
                                                                                                                              Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                                                                                                  Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                                                                                                  €44.99Price
                                                                                                                                  En Stock
                                                                                                                                  €66.99 Price
                                                                                                                                  En Stock
                                                                                                                                  €66.99 Price
                                                                                                                                  Injecteur Clio 3 RS et X85 Cup
                                                                                                                                      The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                      €66.99Price
                                                                                                                                      Injecteur Clio 3 RS et X85 Cup
                                                                                                                                          The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                          €66.99Price
                                                                                                                                          Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                                                                              Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                                                                              €119.40Price
                                                                                                                                              Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                                                                                  Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                                                                                  €119.40Price
                                                                                                                                                  Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                                                                                                      Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                                                                                                      €140.75Price
                                                                                                                                                      Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                                                                                                          Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                                                                                                          €140.75Price
                                                                                                                                                          Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                                                                                                                                              Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                                                                                                                                              €138.05Price
                                                                                                                                                              Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                                                                                                                                                  Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                                                                                                                                                  €138.05Price
                                                                                                                                                                  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
                                                                                                                                                                          Joint anti-usure jonction écope divergent Twingo R2
                                                                                                                                                                              Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                                                                                                              €8.48Price
                                                                                                                                                                              Joint anti-usure jonction écope divergent Twingo R2
                                                                                                                                                                                  Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                                                                                                                  €8.48Price