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: Refroidissement
  • Categories: Support moteur
  • Categories: Suralimentation (Turbo)
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
          €720.00 Price
          En Stock
          €720.00 Price
          Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
              Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
              €720.00Price
              Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
                  Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
                  €720.00Price
                  En Stock
                  €244.00 Price
                  En Stock
                  €244.00 Price
                  Wasegate Forge Megane RS
                      Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                      €244.00Price
                      Wasegate Forge Megane RS
                          Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                          €244.00Price
                          En Stock
                          €84.00 Price
                          En Stock
                          €84.00 Price
                          Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                              Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                              €84.00Price
                              Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                  Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                  €84.00Price
                                  Dispo selon configuration
                                  €169.00 €209.02 Regular price -€40.02 off Price
                                  Dispo selon configuration
                                  €169.00 €209.02 Regular price -€40.02 off Price
                                  COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                                    • Pack
                                    Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                                    €169.00€209.02Regular price-€40.02 offPrice
                                    COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                                      • Pack
                                      Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                                      €169.00€209.02Regular price-€40.02 offPrice
                                      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
                                              Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                  Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                  €36.80Price
                                                  Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                      Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                      €36.80Price
                                                      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
                                                          Multi-layer reinforced silicone turbo boost hose kit by Forge Motorsport for Renault Megane 2 RS.Silicone Turbo Hose Kit Forge | Renault Megane 2 RS
                                                              Do not risk a sudden loss of boost pressure during a hard acceleration pull, a split factory duct caused by extreme engine bay heat, or an efficiency drop at your intercooler cores. The premium Kit Durites (Tubulures) Turbo Forge Motorsport pour Megane 2 RS replaces...
                                                              €241.00Price
                                                              Multi-layer reinforced silicone turbo boost hose kit by Forge Motorsport for Renault Megane 2 RS.Silicone Turbo Hose Kit Forge | Renault Megane 2 RS
                                                                  Do not risk a sudden loss of boost pressure during a hard acceleration pull, a split factory duct caused by extreme engine bay heat, or an efficiency drop at your intercooler cores. The premium Kit Durites (Tubulures) Turbo Forge Motorsport pour Megane 2 RS replaces...
                                                                  €241.00Price
                                                                  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
                                                                          En Stock
                                                                          €37.52 Price
                                                                          En Stock
                                                                          €37.52 Price
                                                                          Raccord 90° de rampe d'injection Clio Gr N
                                                                              Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                                              €37.52Price
                                                                              Raccord 90° de rampe d'injection Clio Gr N
                                                                                  Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                                                  €37.52Price
                                                                                  Interrupteur coup de poing Megane N4
                                                                                      Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                      €20.30Price
                                                                                      Interrupteur coup de poing Megane N4
                                                                                          Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                          €20.30Price
                                                                                          En Stock
                                                                                          €98.33 Price
                                                                                          En Stock
                                                                                          €98.33 Price
                                                                                          Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                                              Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                                              €98.33Price
                                                                                              Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                                                  Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                                                  €98.33Price
                                                                                                  En Stock
                                                                                                  €13.37 Price
                                                                                                  En Stock
                                                                                                  €13.37 Price
                                                                                                  Joint Plenum Clio 2 RS
                                                                                                      Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                                      €13.37Price
                                                                                                      Joint Plenum Clio 2 RS
                                                                                                          Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                                          €13.37Price
                                                                                                          En Stock
                                                                                                          €220.69 Price
                                                                                                          En Stock
                                                                                                          €220.69 Price
                                                                                                          Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                              Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                              €220.69Price
                                                                                                              Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                                  Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                                  €220.69Price
                                                                                                                  En Stock
                                                                                                                  €1.00 Price
                                                                                                                  En Stock
                                                                                                                  €1.00 Price
                                                                                                                  Collier serrage inox (durite) diametre 12-20mm
                                                                                                                      Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                      €1.00Price
                                                                                                                      Collier serrage inox (durite) diametre 12-20mm
                                                                                                                          Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                          €1.00Price
                                                                                                                          En Stock
                                                                                                                          €546.20 Price
                                                                                                                          En Stock
                                                                                                                          €546.20 Price
                                                                                                                          Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                              Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                              €546.20Price
                                                                                                                              Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                  Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                  €546.20Price
                                                                                                                                  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
                                                                                                                                          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
                                                                                                                                                  €35.68 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €35.68 Price
                                                                                                                                                  Butée basse pédale d'accélérateur Twingo R2Butée basse pédale d'accélérateur Twingo R2
                                                                                                                                                      Butée basse pédale d'accélérateur Twingo R2 Référence: 7711157182
                                                                                                                                                      €35.68Price
                                                                                                                                                      Butée basse pédale d'accélérateur Twingo R2Butée basse pédale d'accélérateur Twingo R2
                                                                                                                                                          Butée basse pédale d'accélérateur Twingo R2 Référence: 7711157182
                                                                                                                                                          €35.68Price
                                                                                                                                                          Kit durites de turbo Forge Motorsport Megane 4 RSForge Motorsport Turbo Hose Kit - Renault Megane 4 RS
                                                                                                                                                              Secure your boost pressure consistency and eliminate intake charge drops with the high-performance Forge Motorsport Turbo Hose Kit for the Renault Megane 4 RS . This premium set of uprated silicone boost couplers replaces the restrictive factory rubber lines to optimize...
                                                                                                                                                              €294.76Price
                                                                                                                                                              Kit durites de turbo Forge Motorsport Megane 4 RSForge Motorsport Turbo Hose Kit - Renault Megane 4 RS
                                                                                                                                                                  Secure your boost pressure consistency and eliminate intake charge drops with the high-performance Forge Motorsport Turbo Hose Kit for the Renault Megane 4 RS . This premium set of uprated silicone boost couplers replaces the restrictive factory rubber lines to optimize...
                                                                                                                                                                  €294.76Price
                                                                                                                                                                  Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                                      €4.16Price
                                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                                          Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                                          €4.16Price
                                                                                                                                                                          Durite d'induction (admission) Forge Motorsport Megane 4 RSDurite d'induction (admission) Forge Motorsport Megane 4 RS
                                                                                                                                                                              Durite d'induction (admission) Forge Motorsport Megane 4 RS Produit de qualité permettant de limiter les perturbations.
                                                                                                                                                                              €118.31Price
                                                                                                                                                                              Durite d'induction (admission) Forge Motorsport Megane 4 RSDurite d'induction (admission) Forge Motorsport Megane 4 RS
                                                                                                                                                                                  Durite d'induction (admission) Forge Motorsport Megane 4 RS Produit de qualité permettant de limiter les perturbations.
                                                                                                                                                                                  €118.31Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €1.10 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €1.10 Price
                                                                                                                                                                                  Collier serrage inox (durite) diametre 20-32mm
                                                                                                                                                                                      Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                                                                                                                      €1.10Price
                                                                                                                                                                                      Collier serrage inox (durite) diametre 20-32mm
                                                                                                                                                                                          Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                                                                                                                          €1.10Price