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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: Support moteur
Borne positive batterie Megane 3 RS et N4
      Ensure perfect electrical conductivity with this genuine Renault positive battery terminal . Specifically designed for the Renault Megane 3 RS and Megane N4 , this battery clamp guarantees reliable starting and a stable power supply for your onboard electronic equipment, even under intensive use. ...
      €10.58Price
      Borne positive batterie Megane 3 RS et N4
          Ensure perfect electrical conductivity with this genuine Renault positive battery terminal . Specifically designed for the Renault Megane 3 RS and Megane N4 , this battery clamp guarantees reliable starting and a stable power supply for your onboard electronic equipment, even under intensive use. ...
          €10.58Price
          Pignon de vilebrequin claveté Twingo 2 RS y compris R1 et R2Pignon de vilebrequin claveté Twingo 2 RS y compris R1 et R2
              Pignon de vilebrequin claveté Twingo 2 RS y compris R1 et R2
              €75.14Price
              Pignon de vilebrequin claveté Twingo 2 RS y compris R1 et R2Pignon de vilebrequin claveté Twingo 2 RS y compris R1 et R2
                  Pignon de vilebrequin claveté Twingo 2 RS y compris R1 et R2
                  €75.14Price
                  Tuyau entrée radiateur chauffage Megane 3 RS et N4
                      Don't risk a costly breakdown! This cooling hose for heater radiator inlet , an original Renault part , is specifically designed for your Renault Megane 3 RS . It replaces the hose located at the engine...
                      €56.16Price
                      Tuyau entrée radiateur chauffage Megane 3 RS et N4
                          Don't risk a costly breakdown! This cooling hose for heater radiator inlet , an original Renault part , is specifically designed for your Renault Megane 3 RS . It replaces the hose located at the engine...
                          €56.16Price
                          Dispo selon configuration
                          €122.26 €131.47 Regular price -7% off Price
                          Dispo selon configuration
                          €122.26 €131.47 Regular price -7% off Price
                          Kit Vidange Motul 300V Clio 2 RS, Clio 3 RS  Megane 2 RS, Twingo 2 RS 5w40Kit Vidange Motul 300V Clio 2 RS, Clio 3 RS  Megane 2 RS, Twingo 2 RS 5w40
                            • Pack
                            Kit Vidange Motul 300V comprenant 3 bidons de 2 Litres d'huile Motul 300V 5w40, 1 filtre à huile de marque Purflux et 1 joint bi matière de 16mm
                            €122.26€131.47Regular price-7% offPrice
                            Kit Vidange Motul 300V Clio 2 RS, Clio 3 RS  Megane 2 RS, Twingo 2 RS 5w40Kit Vidange Motul 300V Clio 2 RS, Clio 3 RS  Megane 2 RS, Twingo 2 RS 5w40
                              • Pack
                              Kit Vidange Motul 300V comprenant 3 bidons de 2 Litres d'huile Motul 300V 5w40, 1 filtre à huile de marque Purflux et 1 joint bi matière de 16mm
                              €122.26€131.47Regular price-7% offPrice
                              Câble alimentation protection batterie Megane 3 RS et N4
                                  Câble alimentation protection batterie Megane 3 RS et N4
                                  €96.72Price
                                  Câble alimentation protection batterie Megane 3 RS et N4
                                      Câble alimentation protection batterie Megane 3 RS et N4
                                      €96.72Price
                                      En Stock
                                      €343.21 Price
                                      En Stock
                                      €343.21 Price
                                      Modine (échangeur eau huile) Clio 16S et Williams
                                          Modine (echangeur eau huile) Clio 16S et Williams
                                          €343.21Price
                                          Modine (échangeur eau huile) Clio 16S et Williams
                                              Modine (echangeur eau huile) Clio 16S et Williams
                                              €343.21Price
                                              Dispo selon configuration
                                              €127.52 €131.47 Regular price -3% off Price
                                              Dispo selon configuration
                                              €127.52 €131.47 Regular price -3% off Price
                                              Kit Vidange Motul 300V 15w50 Clio 16S/WilliamsKit Vidange Motul 300V 15w50 Clio 16S/Williams
                                                • Pack
                                                Kit Vidange Motul 300V comprenant 3 bidons de 2 Litres d'huile Motul 300V 15w50, 1 filtre à huile de marque Purflux et 1 joint bi matière de 16mm
                                                €127.52€131.47Regular price-3% offPrice
                                                Kit Vidange Motul 300V 15w50 Clio 16S/WilliamsKit Vidange Motul 300V 15w50 Clio 16S/Williams
                                                  • Pack
                                                  Kit Vidange Motul 300V comprenant 3 bidons de 2 Litres d'huile Motul 300V 15w50, 1 filtre à huile de marque Purflux et 1 joint bi matière de 16mm
                                                  €127.52€131.47Regular price-3% offPrice
                                                  En Stock
                                                  €202.54 Price
                                                  En Stock
                                                  €202.54 Price
                                                  Ecope supérieure de radiateur Clio R3 "MAXI"
                                                      Ecope supérieure de radiateur Clio R3 "MAXI" Ref: 7711160688
                                                      €202.54Price
                                                      Ecope supérieure de radiateur Clio R3 "MAXI"
                                                          Ecope supérieure de radiateur Clio R3 "MAXI" Ref: 7711160688
                                                          €202.54Price
                                                          En Stock
                                                          €32.92 Price
                                                          En Stock
                                                          €32.92 Price
                                                          Rampe injection Clio 2 RS 172 phase 2 et 182
                                                              Fuel injection rail Renault Clio 2 RS Phase 2 & 3 Give your Renault Clio 2 RS Phase 2 or 3 an optimum fuel supply with the genuine Renault injection rail! Designed for sports driving enthusiasts, this rail guarantees a constant and precise fuel flow, even at high engine speeds, for optimum performance and an unrivalled driving experience. ...
                                                              €32.92Price
                                                              Rampe injection Clio 2 RS 172 phase 2 et 182
                                                                  Fuel injection rail Renault Clio 2 RS Phase 2 & 3 Give your Renault Clio 2 RS Phase 2 or 3 an optimum fuel supply with the genuine Renault injection rail! Designed for sports driving enthusiasts, this rail guarantees a constant and precise fuel flow, even at high engine speeds, for optimum performance and an unrivalled driving experience. ...
                                                                  €32.92Price
                                                                  Dispo selon configuration
                                                                  €127.52 €131.47 Regular price -3% off Price
                                                                  Dispo selon configuration
                                                                  €127.52 €131.47 Regular price -3% off Price
                                                                  Kit Vidange Motul 300V 10w40 Clio 16S/WilliamsKit Vidange Motul 300V 10w40 Clio 16S/Williams
                                                                    • Pack
                                                                    Kit Vidange Motul 300V comprenant 3 bidons de 2 Litres d'huile Motul 300V 10w40, 1 filtre à huile de marque Purflux et 1 joint bi matière de 16mm
                                                                    €127.52€131.47Regular price-3% offPrice
                                                                    Kit Vidange Motul 300V 10w40 Clio 16S/WilliamsKit Vidange Motul 300V 10w40 Clio 16S/Williams
                                                                      • Pack
                                                                      Kit Vidange Motul 300V comprenant 3 bidons de 2 Litres d'huile Motul 300V 10w40, 1 filtre à huile de marque Purflux et 1 joint bi matière de 16mm
                                                                      €127.52€131.47Regular price-3% offPrice
                                                                      Dispo selon configuration
                                                                      €121.94 €134.00 Regular price -9% off Price
                                                                      Dispo selon configuration
                                                                      €121.94 €134.00 Regular price -9% off Price
                                                                      Kit Vidange Motul 300V Megane 3 RS 5w40Kit Vidange Motul 300V Megane 3 RS 5w40
                                                                        • Pack
                                                                        Kit Vidange Motul 300V comprenant 3 bidons de 2 Litres d'huile Motul 300V 5w40, 1 filtre à huile de marque Renault et 1 joint bi matière de 16mm
                                                                        €121.94€134.00Regular price-9% offPrice
                                                                        Kit Vidange Motul 300V Megane 3 RS 5w40Kit Vidange Motul 300V Megane 3 RS 5w40
                                                                          • Pack
                                                                          Kit Vidange Motul 300V comprenant 3 bidons de 2 Litres d'huile Motul 300V 5w40, 1 filtre à huile de marque Renault et 1 joint bi matière de 16mm
                                                                          €121.94€134.00Regular price-9% offPrice
                                                                          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
                                                                                  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
                                                                                          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
                                                                                                  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
                                                                                                          Motul Engine Flush 300mL Pre-Oil Change for Sports Engines
                                                                                                              Optimize your engine's health with Motul Engine Flush (300mL). This high-performance pre-oil change treatment is essential for removing deposits, sludge, and combustion residues before introducing fresh oil. Specially formulated for performance...
                                                                                                              €10.75Price
                                                                                                              Motul Engine Flush 300mL Pre-Oil Change for Sports Engines
                                                                                                                  Optimize your engine's health with Motul Engine Flush (300mL). This high-performance pre-oil change treatment is essential for removing deposits, sludge, and combustion residues before introducing fresh oil. Specially formulated for performance...
                                                                                                                  €10.75Price
                                                                                                                  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
                                                                                                                          €66.99 Price
                                                                                                                          En Stock
                                                                                                                          €66.99 Price
                                                                                                                          Injecteur Clio 3 RS et X85 Cup
                                                                                                                              The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                              €66.99Price
                                                                                                                              Injecteur Clio 3 RS et X85 Cup
                                                                                                                                  The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                  €66.99Price
                                                                                                                                  En Stock
                                                                                                                                  €279.71 Price
                                                                                                                                  En Stock
                                                                                                                                  €279.71 Price
                                                                                                                                  Kit 11 Durites Silicone Super 5 GT TURBO Ph 2Kit 11 Durites Silicone Super 5 GT TURBO Ph 2
                                                                                                                                      Kit de 11 Durites Silicones pour Super 5 GT Turbo Phase 2 Noir mat afin de rester dans l'esprit d'origine de la voiture Parfait pour une restoration
                                                                                                                                      €279.71Price
                                                                                                                                      Kit 11 Durites Silicone Super 5 GT TURBO Ph 2Kit 11 Durites Silicone Super 5 GT TURBO Ph 2
                                                                                                                                          Kit de 11 Durites Silicones pour Super 5 GT Turbo Phase 2 Noir mat afin de rester dans l'esprit d'origine de la voiture Parfait pour une restoration
                                                                                                                                          €279.71Price
                                                                                                                                          En Stock
                                                                                                                                          €277.74 €396.77 Regular price -30% off Price
                                                                                                                                          En Stock
                                                                                                                                          €277.74 €396.77 Regular price -30% off Price
                                                                                                                                          Embrayage Complet Origine Megane 3 RS
                                                                                                                                              Renault Mégane 3 RS Clutch Kit (Genuine) Replace your worn clutch with this genuine Renault kit, designed specifically for the Mégane 3 RS (all versions). Ensures optimal transmission and durable performance. Essential for maintaining your sports vehicle's performance.
                                                                                                                                              €277.74€396.77Regular price-30% offPrice
                                                                                                                                              Embrayage Complet Origine Megane 3 RS
                                                                                                                                                  Renault Mégane 3 RS Clutch Kit (Genuine) Replace your worn clutch with this genuine Renault kit, designed specifically for the Mégane 3 RS (all versions). Ensures optimal transmission and durable performance. Essential for maintaining your sports vehicle's performance.
                                                                                                                                                  €277.74€396.77Regular price-30% offPrice
                                                                                                                                                  En Stock
                                                                                                                                                  €122.62 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €122.62 Price
                                                                                                                                                  Batterie sèche 12V-24Ah
                                                                                                                                                      Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                                                                                                                                                      €122.62Price
                                                                                                                                                      Batterie sèche 12V-24Ah
                                                                                                                                                          Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                                                                                                                                                          €122.62Price
                                                                                                                                                          En Stock
                                                                                                                                                          €90.50 €120.66 Regular price -25% off Price
                                                                                                                                                          En Stock
                                                                                                                                                          €90.50 €120.66 Regular price -25% off Price
                                                                                                                                                          Huile moteur HTX 3823 0W20 4LHuile moteur HTX 3823 0W20 4L
                                                                                                                                                              Huile moteur HTX 3823 0W20 4L Référence: 7711167580
                                                                                                                                                              €90.50€120.66Regular price-25% offPrice
                                                                                                                                                              Huile moteur HTX 3823 0W20 4LHuile moteur HTX 3823 0W20 4L
                                                                                                                                                                  Huile moteur HTX 3823 0W20 4L Référence: 7711167580
                                                                                                                                                                  €90.50€120.66Regular price-25% offPrice
                                                                                                                                                                  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
                                                                                                                                                                          Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
                                                                                                                                                                              Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
                                                                                                                                                                              €54.25Price
                                                                                                                                                                              Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
                                                                                                                                                                                  Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
                                                                                                                                                                                  €54.25Price
                                                                                                                                                                                  Mecacyl CR 100 ml
                                                                                                                                                                                      Protect your high-performance engine's internal components with the Mecacyl CR 100 ml engine hyper-lubricant. This unique surface treatment mixes directly with your fresh oil to drastically reduce internal friction, lower operating temperatures, and optimize engine...
                                                                                                                                                                                      €28.50Price
                                                                                                                                                                                      Mecacyl CR 100 ml
                                                                                                                                                                                          Protect your high-performance engine's internal components with the Mecacyl CR 100 ml engine hyper-lubricant. This unique surface treatment mixes directly with your fresh oil to drastically reduce internal friction, lower operating temperatures, and optimize engine...
                                                                                                                                                                                          €28.50Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €221.33 Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €221.33 Price
                                                                                                                                                                                          Radiator Outlet Water Hose Renault Megane 3 RSRadiator Outlet Water Hose Renault Megane 3 RS
                                                                                                                                                                                              Genuine Renault Radiator Outlet Water Hose for Renault Megane 3 RS. Essential part for optimal engine cooling. Renault quality and reliability.
                                                                                                                                                                                              €221.33Price
                                                                                                                                                                                              Radiator Outlet Water Hose Renault Megane 3 RSRadiator Outlet Water Hose Renault Megane 3 RS
                                                                                                                                                                                                  Genuine Renault Radiator Outlet Water Hose for Renault Megane 3 RS. Essential part for optimal engine cooling. Renault quality and reliability.
                                                                                                                                                                                                  €221.33Price
                                                                                                                                                                                                  Calorstat Clio 3 RS 75°
                                                                                                                                                                                                      Control your engine's temperature with this genuine Renault thermostat with an opening temperature of 75°C . Specifically designed for the Clio 3 RS , it also mounts without modification on the Clio 2 RS , allowing the cooling circuit to open more quickly. This part is essential for limiting temperature spikes and preventing the risk of engine overheating ...
                                                                                                                                                                                                      €78.18Price
                                                                                                                                                                                                      Calorstat Clio 3 RS 75°
                                                                                                                                                                                                          Control your engine's temperature with this genuine Renault thermostat with an opening temperature of 75°C . Specifically designed for the Clio 3 RS , it also mounts without modification on the Clio 2 RS , allowing the cooling circuit to open more quickly. This part is essential for limiting temperature spikes and preventing the risk of engine overheating ...
                                                                                                                                                                                                          €78.18Price