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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: Préparation intérieure
  • Categories: Suralimentation (Turbo)
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
          €23.50 Price
          En Stock
          €23.50 Price
          Kit Revision Dump Valve Recirculation Forge
              Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
              €23.50Price
              Kit Revision Dump Valve Recirculation Forge
                  Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                  €23.50Price
                  En Stock
                  €224.35 Price
                  En Stock
                  €224.35 Price
                  Kit Joint Refection moteur Origine Clio 2 RS
                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                      €224.35Price
                      Kit Joint Refection moteur Origine Clio 2 RS
                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                          €224.35Price
                          En Stock
                          €133.39 Price
                          En Stock
                          €133.39 Price
                          Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                              Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                              €133.39Price
                              Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                                  Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                                  €133.39Price
                                  En Stock
                                  €133.31 Price
                                  En Stock
                                  €133.31 Price
                                  Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                      €133.31Price
                                      Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                          €133.31Price
                                          En Stock
                                          €66.48 Price
                                          En Stock
                                          €66.48 Price
                                          Coussinets de Vilebrequin Trimetal ergotés ACLCoussinets de Vilebrequin Trimetal ergotés ACL
                                              Coussinet de vilebrequin trimetal Coussinets pour F7P, F7R, F4R, F4R soit pour Clio 16S, Williams, clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS Présence d'ergots.
                                              €66.48Price
                                              Coussinets de Vilebrequin Trimetal ergotés ACLCoussinets de Vilebrequin Trimetal ergotés ACL
                                                  Coussinet de vilebrequin trimetal Coussinets pour F7P, F7R, F4R, F4R soit pour Clio 16S, Williams, clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS Présence d'ergots.
                                                  €66.48Price
                                                  Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGEDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGE
                                                      Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur
                                                      €14.22Price
                                                      Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGEDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGE
                                                          Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur
                                                          €14.22Price
                                                          Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                              Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                              €202.56Price
                                                              Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                  Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                  €202.56Price
                                                                  En Stock
                                                                  €3.16 Price
                                                                  En Stock
                                                                  €3.16 Price
                                                                  Clip maintien support linguet Twingo R2 195/205
                                                                      Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                      €3.16Price
                                                                      Clip maintien support linguet Twingo R2 195/205
                                                                          Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                          €3.16Price
                                                                          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
                                                                                  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
                                                                                          Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                              The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                              €16.92Price
                                                                                              Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                                  The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                                  €16.92Price
                                                                                                  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
                                                                                                          Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                              Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                              €4.72Price
                                                                                                              Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                                  Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                                  €4.72Price
                                                                                                                  En Stock
                                                                                                                  €36.01 Price
                                                                                                                  En Stock
                                                                                                                  €36.01 Price
                                                                                                                  Kit ressorts Dump Valve Forge
                                                                                                                      Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                                                                                                      €36.01Price
                                                                                                                      Kit ressorts Dump Valve Forge
                                                                                                                          Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                                                                                                          €36.01Price
                                                                                                                          En Stock
                                                                                                                          €198.25 Price
                                                                                                                          En Stock
                                                                                                                          €198.25 Price
                                                                                                                          Kit Joint Refection moteur Origine Clio 3 RS
                                                                                                                              Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                                                              €198.25Price
                                                                                                                              Kit Joint Refection moteur Origine Clio 3 RS
                                                                                                                                  Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                                                                  €198.25Price
                                                                                                                                  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
                                                                                                                                          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
                                                                                                                                                  En Stock
                                                                                                                                                  €150.77 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €150.77 Price
                                                                                                                                                  Bride de turbo Megane N4
                                                                                                                                                      Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                                                      €150.77Price
                                                                                                                                                      Bride de turbo Megane N4
                                                                                                                                                          Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                                                          €150.77Price
                                                                                                                                                          En Stock
                                                                                                                                                          €1,326.07 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €1,326.07 Price
                                                                                                                                                          AAC Admission loi 286TR2A2 Twingo R2 205
                                                                                                                                                              AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                                                                                                                                              €1,326.07Price
                                                                                                                                                              AAC Admission loi 286TR2A2 Twingo R2 205
                                                                                                                                                                  AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                                                                                                                                                  €1,326.07Price
                                                                                                                                                                  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
                                                                                                                                                                          Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                                                              Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                                                              €17.09Price
                                                                                                                                                                              Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                                                                  Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                                                                  €17.09Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €220.46 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €220.46 Price
                                                                                                                                                                                  Dump Valve Forge Recirculation Megane RS
                                                                                                                                                                                      Maximize your engine's responsiveness with the Forge Motorsport Recirculation Dump Valve for Renault Megane 2 RS and Megane 3 RS (reference FMDVRMR ). Unlike atmospheric blow-off valves, this recirculation version diverts air back into the intake system to...
                                                                                                                                                                                      €220.46Price
                                                                                                                                                                                      Dump Valve Forge Recirculation Megane RS
                                                                                                                                                                                          Maximize your engine's responsiveness with the Forge Motorsport Recirculation Dump Valve for Renault Megane 2 RS and Megane 3 RS (reference FMDVRMR ). Unlike atmospheric blow-off valves, this recirculation version diverts air back into the intake system to...
                                                                                                                                                                                          €220.46Price
                                                                                                                                                                                          Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
                                                                                                                                                                                              Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
                                                                                                                                                                                              €230.39Price
                                                                                                                                                                                              Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
                                                                                                                                                                                                  Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
                                                                                                                                                                                                  €230.39Price
                                                                                                                                                                                                  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