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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: Préparation intérieure
  • Categories: Suralimentation (Turbo)
Dispo selon configuration
€169.00 €209.02 Regular price -€40.02 off Price
Dispo selon configuration
€169.00 €209.02 Regular price -€40.02 off Price
COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
    • Pack
    Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
    €169.00€209.02Regular price-€40.02 offPrice
    COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
      • Pack
      Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
      €169.00€209.02Regular price-€40.02 offPrice
      En Stock
      €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
              Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                  Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                  €7.80Price
                  Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                      Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                      €7.80Price
                      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
                              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
                                      High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                          Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                          €10.93Price
                                          High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                              Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                              €10.93Price
                                              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
                                                      €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 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
                                                                      €70.25 Price
                                                                      En Stock
                                                                      €70.25 Price
                                                                      Blue Crankshaft Half-Bearing Set
                                                                          Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                          €70.25Price
                                                                          Blue Crankshaft Half-Bearing Set
                                                                              Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                              €70.25Price
                                                                              Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                                                  Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                                                  €44.99Price
                                                                                  Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                                                      Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                                                      €44.99Price
                                                                                      En Stock
                                                                                      €13.20 Price
                                                                                      En Stock
                                                                                      €13.20 Price
                                                                                      Joint Plenum Clio 3 RSJoint Plenum Clio 3 RS
                                                                                          Joint Plenum Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
                                                                                          €13.20Price
                                                                                          Joint Plenum Clio 3 RSJoint Plenum Clio 3 RS
                                                                                              Joint Plenum Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
                                                                                              €13.20Price
                                                                                              Joint 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
                                                                                                              Dispo selon configuration
                                                                                                              €65.11 Price
                                                                                                              Dispo selon configuration
                                                                                                              €65.11 Price
                                                                                                              T de raccord de Dump Megane 2 RS
                                                                                                                  T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                                                                  €65.11Price
                                                                                                                  T de raccord de Dump Megane 2 RS
                                                                                                                      T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                                                                      €65.11Price
                                                                                                                      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
                                                                                                                              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
                                                                                                                                      En Stock
                                                                                                                                      €720.00 Price
                                                                                                                                      En Stock
                                                                                                                                      €720.00 Price
                                                                                                                                      Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
                                                                                                                                          Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
                                                                                                                                          €720.00Price
                                                                                                                                          Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
                                                                                                                                              Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
                                                                                                                                              €720.00Price
                                                                                                                                              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
                                                                                                                                                      €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
                                                                                                                                                              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
                                                                                                                                                                      €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