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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: Circuit d'air
  • Categories: Circuit d'eau
  • Categories: Kit Allègement
  • Categories: Préparation intérieure
En Stock
€13.20 Price
En Stock
€13.20 Price
Joint Plenum Clio 3 RSJoint Plenum Clio 3 RS
      Joint Plenum Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
      €13.20Price
      Joint Plenum Clio 3 RSJoint Plenum Clio 3 RS
          Joint Plenum Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
          €13.20Price
          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
                  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
                          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
                                  Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                      Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                      €14.95Price
                                      Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                          Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                          €14.95Price
                                          Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                              Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                              €33.94Price
                                              Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                  Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                  €33.94Price
                                                  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
                                                          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
                                                                  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
                                                                          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
                                                                                          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
                                                                                                  €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
                                                                                                          Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                                              Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                                              €265.93Price
                                                                                                              Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                                                  Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                                                  €265.93Price
                                                                                                                  Jeu durites Eau Silicone Forge Clio 2 RSJeu durites Eau Silicone Forge Clio 2 RS
                                                                                                                      Jeu de 6 durites Silicone Forge. Ce kit remplace avantageusement les durites d'origines de la voiture car beaucoup plus résistantes. Apporte également un look visuel racing à votre moteur.
                                                                                                                      €317.09Price
                                                                                                                      Jeu durites Eau Silicone Forge Clio 2 RSJeu durites Eau Silicone Forge Clio 2 RS
                                                                                                                          Jeu de 6 durites Silicone Forge. Ce kit remplace avantageusement les durites d'origines de la voiture car beaucoup plus résistantes. Apporte également un look visuel racing à votre moteur.
                                                                                                                          €317.09Price
                                                                                                                          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
                                                                                                                                  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
                                                                                                                                          €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
                                                                                                                                                  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
                                                                                                                                                          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
                                                                                                                                                                  €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
                                                                                                                                                                          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
                                                                                                                                                                                  €50.73 €72.47 Regular price -30% off Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €50.73 €72.47 Regular price -30% off Price
                                                                                                                                                                                  Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
                                                                                                                                                                                      Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
                                                                                                                                                                                      €50.73€72.47Regular price-30% offPrice
                                                                                                                                                                                      Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
                                                                                                                                                                                          Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
                                                                                                                                                                                          €50.73€72.47Regular price-30% offPrice