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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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Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
      Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
      €28.78Price
      Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
          Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
          €28.78Price
          Durite d'admission d'air Forge Motorsport Mégane 3 RSDurite d'admission d'air Forge Motorsport Mégane 3 RS
              Durite d'admission d'air silicone Forge Motorsport qui se fixe en sortie de boite à air. Celle ce permet d'augmenter le débit d'air notamment grâce à un diamètre plus gros ainsi qu'une surface lisse interne. Se monte en lieu et place de celle d'origine Plusieurs couleurs disponibles
              €159.77Price
              Durite d'admission d'air Forge Motorsport Mégane 3 RSDurite d'admission d'air Forge Motorsport Mégane 3 RS
                  Durite d'admission d'air silicone Forge Motorsport qui se fixe en sortie de boite à air. Celle ce permet d'augmenter le débit d'air notamment grâce à un diamètre plus gros ainsi qu'une surface lisse interne. Se monte en lieu et place de celle d'origine Plusieurs couleurs disponibles
                  €159.77Price
                  En Stock
                  €47.34 Price
                  En Stock
                  €47.34 Price
                  Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                      Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                      €47.34Price
                      Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                          Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                          €47.34Price
                          Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                              €0.23Price
                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                  Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                  €0.23Price
                                  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
                                          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
                                                          Collection de Ségments (X82.70)
                                                              Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                              €37.55Price
                                                              Collection de Ségments (X82.70)
                                                                  Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                                  €37.55Price
                                                                  En Stock
                                                                  €81.65 Price
                                                                  En Stock
                                                                  €81.65 Price
                                                                  Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                      Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                      €81.65Price
                                                                      Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                          Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                          €81.65Price
                                                                          Durite modine/radiateur Clio 2 Cup
                                                                              The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                              €77.62Price
                                                                              Durite modine/radiateur Clio 2 Cup
                                                                                  The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                  €77.62Price
                                                                                  En Stock
                                                                                  €83.39 Price
                                                                                  En Stock
                                                                                  €83.39 Price
                                                                                  Boitier sortie eau sans calorstat Twingo R1 R2
                                                                                      Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                                      €83.39Price
                                                                                      Boitier sortie eau sans calorstat Twingo R1 R2
                                                                                          Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                                          €83.39Price
                                                                                          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
                                                                                                  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
                                                                                                          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
                                                                                                                  €689.93 Price
                                                                                                                  En Stock
                                                                                                                  €689.93 Price
                                                                                                                  Durite inférieure radiateur Clio 2 Rs et Cup
                                                                                                                      Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
                                                                                                                      €689.93Price
                                                                                                                      Durite inférieure radiateur Clio 2 Rs et Cup
                                                                                                                          Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
                                                                                                                          €689.93Price
                                                                                                                          En Stock
                                                                                                                          €174.00 Price
                                                                                                                          En Stock
                                                                                                                          €174.00 Price
                                                                                                                          Joint de Culasse renforcé Cometic Megane 3 RS 1.7Joint de Culasse renforcé Cometic Megane 3 RS 1.7
                                                                                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.7 mm 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.
                                                                                                                              €174.00Price
                                                                                                                              Joint de Culasse renforcé Cometic Megane 3 RS 1.7Joint de Culasse renforcé Cometic Megane 3 RS 1.7
                                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.7 mm 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.
                                                                                                                                  €174.00Price
                                                                                                                                  En Stock
                                                                                                                                  €17.45 Price
                                                                                                                                  En Stock
                                                                                                                                  €17.45 Price
                                                                                                                                  Support inférieur écope boitier filtre Twingo R2
                                                                                                                                      Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                                                                      €17.45Price
                                                                                                                                      Support inférieur écope boitier filtre Twingo R2
                                                                                                                                          Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                                                                          €17.45Price
                                                                                                                                          Durite Admission Clio 2 RSSilicone Air Induction Hose for Renault Clio 2 RS
                                                                                                                                              Stop letting a perished or cracked factory hose choke your Clio 2 RS engine. This reinforced silicone induction hose is a direct replacement for the OEM rubber part, which is notorious for collapsing under vacuum. Available in various colors for a subtle or race-inspired customization , it ensures...
                                                                                                                                              €69.00Price
                                                                                                                                              Durite Admission Clio 2 RSSilicone Air Induction Hose for Renault Clio 2 RS
                                                                                                                                                  Stop letting a perished or cracked factory hose choke your Clio 2 RS engine. This reinforced silicone induction hose is a direct replacement for the OEM rubber part, which is notorious for collapsing under vacuum. Available in various colors for a subtle or race-inspired customization , it ensures...
                                                                                                                                                  €69.00Price
                                                                                                                                                  Durites de Reniflard et Wasegate Megane 2 RS
                                                                                                                                                      Durites De reniflard Renforcées pour toutes Megane 2 RS. Produit de la marque Samco Sport Le kit est composé de 4 pièces.
                                                                                                                                                      €82.00Price
                                                                                                                                                      Durites de Reniflard et Wasegate Megane 2 RS
                                                                                                                                                          Durites De reniflard Renforcées pour toutes Megane 2 RS. Produit de la marque Samco Sport Le kit est composé de 4 pièces.
                                                                                                                                                          €82.00Price
                                                                                                                                                          En Stock
                                                                                                                                                          €174.00 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €174.00 Price
                                                                                                                                                          Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
                                                                                                                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm 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.
                                                                                                                                                              €174.00Price
                                                                                                                                                              Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
                                                                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm 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.
                                                                                                                                                                  €174.00Price
                                                                                                                                                                  Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                                                                                                                                      Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                                                                                                                                      €117.43Price
                                                                                                                                                                      Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                                                                                                                                          Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                                                                                                                                          €117.43Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €25.61 Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €25.61 Price
                                                                                                                                                                          Filtre à air origine Clio 2 RS
                                                                                                                                                                              Filtre à air origine Clio 2 RS Véritable produit d'origine Ne convient pas à la boite a air cylindrique des clio RS1
                                                                                                                                                                              €25.61Price
                                                                                                                                                                              Filtre à air origine Clio 2 RS
                                                                                                                                                                                  Filtre à air origine Clio 2 RS Véritable produit d'origine Ne convient pas à la boite a air cylindrique des clio RS1
                                                                                                                                                                                  €25.61Price
                                                                                                                                                                                  Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                                                                                                                                                                      Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                                                                                                                                                                      €33.55Price
                                                                                                                                                                                      Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                                                                                                                                                                          Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                                                                                                                                                                          €33.55Price
                                                                                                                                                                                          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