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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: Allumage
  • Categories: Circuit d'eau
  • Categories: Kit Allègement
  • Categories: Suralimentation (Turbo)
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
          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
                  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
                          Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                              Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                              €36.80Price
                              Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                  Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                  €36.80Price
                                  En Stock
                                  €149.05 €212.93 Regular price -30% off Price
                                  En Stock
                                  €149.05 €212.93 Regular price -30% off Price
                                  Jeu de Bougies Renault Clio 4 RS
                                      Set of 4 spark plugs for...
                                      €149.05€212.93Regular price-30% offPrice
                                      Jeu de Bougies Renault Clio 4 RS
                                          Set of 4 spark plugs for...
                                          €149.05€212.93Regular price-30% offPrice
                                          Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
                                              Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
                                              €230.39Price
                                              Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
                                                  Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
                                                  €230.39Price
                                                  En Stock
                                                  €50.21 €83.68 Regular price -40% off Price
                                                  En Stock
                                                  €50.21 €83.68 Regular price -40% off Price
                                                  Bobine D'allumage
                                                      Optimize your engine's combustion cycle with this genuine Renault ignition coil . Sold individually, it is the essential choice for Renault Megane 2 RS , Clio 3 RS , Megane 3 RS , and Twingo 2 RS owners looking to maintain optimal ignition performance. Certified...
                                                      €50.21€83.68Regular price-40% offPrice
                                                      Bobine D'allumage
                                                          Optimize your engine's combustion cycle with this genuine Renault ignition coil . Sold individually, it is the essential choice for Renault Megane 2 RS , Clio 3 RS , Megane 3 RS , and Twingo 2 RS owners looking to maintain optimal ignition performance. Certified...
                                                          €50.21€83.68Regular price-40% offPrice
                                                          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
                                                              Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                  Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                  €140.75Price
                                                                  Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                      Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                      €140.75Price
                                                                      Jeu de 4 Fils de Bougies Magnecor Clio 1 16s / Williams
                                                                          Kit de fils d'allumage MAGNECOR - Renault Clio 16S/Williams
                                                                          €150.38Price
                                                                          Jeu de 4 Fils de Bougies Magnecor Clio 1 16s / Williams
                                                                              Kit de fils d'allumage MAGNECOR - Renault Clio 16S/Williams
                                                                              €150.38Price
                                                                              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
                                                                                      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
                                                                                              Jeu de Bougies NGK PFR7ZTG
                                                                                                  Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
                                                                                                  €53.99Price
                                                                                                  Jeu de Bougies NGK PFR7ZTG
                                                                                                      Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
                                                                                                      €53.99Price
                                                                                                      En Stock
                                                                                                      €689.93 Price
                                                                                                      En Stock
                                                                                                      €689.93 Price
                                                                                                      Durite inférieure radiateur Clio 2 Rs et Cup
                                                                                                          Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
                                                                                                          €689.93Price
                                                                                                          Durite inférieure radiateur Clio 2 Rs et Cup
                                                                                                              Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
                                                                                                              €689.93Price
                                                                                                              En Stock
                                                                                                              €150.77 Price
                                                                                                              En Stock
                                                                                                              €150.77 Price
                                                                                                              Bride de turbo Megane N4
                                                                                                                  Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                  €150.77Price
                                                                                                                  Bride de turbo Megane N4
                                                                                                                      Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                      €150.77Price
                                                                                                                      En Stock
                                                                                                                      €98.33 Price
                                                                                                                      En Stock
                                                                                                                      €98.33 Price
                                                                                                                      Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                                                                          Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                                                                          €98.33Price
                                                                                                                          Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                                                                              Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                                                                              €98.33Price
                                                                                                                              En Stock
                                                                                                                              €130.37 Price
                                                                                                                              En Stock
                                                                                                                              €130.37 Price
                                                                                                                              Capteur pression de suralimentation Megane 3 RS
                                                                                                                                  Capteur pression de suralimentation Megane 3 RS Véritable produit d'origine
                                                                                                                                  €130.37Price
                                                                                                                                  Capteur pression de suralimentation Megane 3 RS
                                                                                                                                      Capteur pression de suralimentation Megane 3 RS Véritable produit d'origine
                                                                                                                                      €130.37Price
                                                                                                                                      Durite Sortie radiateur de chauffage Twingo RS R1 et R2
                                                                                                                                          Durite Sortie radiateur de chauffage Twingo RS R1 et R2 Véritable produit d'origine
                                                                                                                                          €38.53Price
                                                                                                                                          Durite Sortie radiateur de chauffage Twingo RS R1 et R2
                                                                                                                                              Durite Sortie radiateur de chauffage Twingo RS R1 et R2 Véritable produit d'origine
                                                                                                                                              €38.53Price
                                                                                                                                              En Stock
                                                                                                                                              €243.60 Price
                                                                                                                                              En Stock
                                                                                                                                              €243.60 Price
                                                                                                                                              Radiateur d'eau
                                                                                                                                                  Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                                                                                                                                                  €243.60Price
                                                                                                                                                  Radiateur d'eau
                                                                                                                                                      Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                                                                                                                                                      €243.60Price
                                                                                                                                                      En Stock
                                                                                                                                                      €15.49 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €15.49 Price
                                                                                                                                                      bague étanchéité bobine crayon
                                                                                                                                                          The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                          €15.49Price
                                                                                                                                                          bague étanchéité bobine crayon
                                                                                                                                                              The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                              €15.49Price
                                                                                                                                                              En Stock
                                                                                                                                                              €1.10 Price
                                                                                                                                                              En Stock
                                                                                                                                                              €1.10 Price
                                                                                                                                                              Collier serrage inox (durite) diametre 20-32mm
                                                                                                                                                                  Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                                                                                                  €1.10Price
                                                                                                                                                                  Collier serrage inox (durite) diametre 20-32mm
                                                                                                                                                                      Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                                                                                                      €1.10Price
                                                                                                                                                                      Joint de conduit d'air sortie de turbo Clio 4 RS - Megane 4 GT et RS
                                                                                                                                                                          Ensure absolute air tightness within your forced induction system with the Genuine Renault Turbo Outlet Air Duct Gasket . Specifically calibrated to withstand the high pressures of turbocharged engines, this official O-ring eliminates boost leaks between the turbocharger and...
                                                                                                                                                                          €15.34Price
                                                                                                                                                                          Joint de conduit d'air sortie de turbo Clio 4 RS - Megane 4 GT et RS
                                                                                                                                                                              Ensure absolute air tightness within your forced induction system with the Genuine Renault Turbo Outlet Air Duct Gasket . Specifically calibrated to withstand the high pressures of turbocharged engines, this official O-ring eliminates boost leaks between the turbocharger and...
                                                                                                                                                                              €15.34Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €1.30 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €1.30 Price
                                                                                                                                                                              Collier serrage inox (durite) diametre 25-40mm
                                                                                                                                                                                  Collier serrage inox (durite) diametre 25-40mm Vendu à l'unité
                                                                                                                                                                                  €1.30Price
                                                                                                                                                                                  Collier serrage inox (durite) diametre 25-40mm
                                                                                                                                                                                      Collier serrage inox (durite) diametre 25-40mm Vendu à l'unité
                                                                                                                                                                                      €1.30Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €82.24 Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €82.24 Price
                                                                                                                                                                                      Calorstat Megane 3 RS
                                                                                                                                                                                          Ensure optimal thermal regulation for your Renault Megane 3 RS with this genuine Renault thermostat . With an opening temperature of 83°C , it is the key part to ensure your engine runs at the ideal temperature, preventing both overheating and undercooling. Don't compromise the health of your F4R engine.
                                                                                                                                                                                          €82.24Price
                                                                                                                                                                                          Calorstat Megane 3 RS
                                                                                                                                                                                              Ensure optimal thermal regulation for your Renault Megane 3 RS with this genuine Renault thermostat . With an opening temperature of 83°C , it is the key part to ensure your engine runs at the ideal temperature, preventing both overheating and undercooling. Don't compromise the health of your F4R engine.
                                                                                                                                                                                              €82.24Price
                                                                                                                                                                                              Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RSLot de 2 bouchons silicone pour suppression résonateur Clio 4 RS
                                                                                                                                                                                                  Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RS Uniquement compatible avec la cold side AIRTEC Si vous disposez encore de la durite d'origine, consultez nos autres bouchons
                                                                                                                                                                                                  €58.32Price
                                                                                                                                                                                                  Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RSLot de 2 bouchons silicone pour suppression résonateur Clio 4 RS
                                                                                                                                                                                                      Lot de 2 bouchons silicone pour suppression résonateur Clio 4 RS Uniquement compatible avec la cold side AIRTEC Si vous disposez encore de la durite d'origine, consultez nos autres bouchons
                                                                                                                                                                                                      €58.32Price
                                                                                                                                                                                                      Vis de pompe à eau Clio 2 RS y compris X65Cup et Gr N
                                                                                                                                                                                                          Secure your engine block seal and guarantee the total reliability of your cooling circuit with these factory-spec Water Pump Fixing Bolts for the Renault Clio 2 RS, X65 Cup, and Group N . Engineered specifically for the naturally aspirated 2.0L 16V F4R engine, this high-grade...
                                                                                                                                                                                                          €2.82Price
                                                                                                                                                                                                          Vis de pompe à eau Clio 2 RS y compris X65Cup et Gr N
                                                                                                                                                                                                              Secure your engine block seal and guarantee the total reliability of your cooling circuit with these factory-spec Water Pump Fixing Bolts for the Renault Clio 2 RS, X65 Cup, and Group N . Engineered specifically for the naturally aspirated 2.0L 16V F4R engine, this high-grade...
                                                                                                                                                                                                              €2.82Price
                                                                                                                                                                                                              En Stock
                                                                                                                                                                                                              €1.37 Price
                                                                                                                                                                                                              En Stock
                                                                                                                                                                                                              €1.37 Price
                                                                                                                                                                                                              Collier serrage inox (durite) diametre 30-45mm
                                                                                                                                                                                                                  Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                                                                                                                                                                                                  €1.37Price
                                                                                                                                                                                                                  Collier serrage inox (durite) diametre 30-45mm
                                                                                                                                                                                                                      Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                                                                                                                                                                                                      €1.37Price
                                                                                                                                                                                                                      Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                                                                                                                                          Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                                                                                                                                          €217.02Price
                                                                                                                                                                                                                          Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                                                                                                                                              Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                                                                                                                                              €217.02Price
                                                                                                                                                                                                                              En Stock
                                                                                                                                                                                                                              €199.00 Price
                                                                                                                                                                                                                              En Stock
                                                                                                                                                                                                                              €199.00 Price
                                                                                                                                                                                                                              Kit suppression de direction assistéeKit suppression de direction assistée
                                                                                                                                                                                                                                  Kit suppression de direction assistée comprenant la poulie folle et son support.
                                                                                                                                                                                                                                  €199.00Price
                                                                                                                                                                                                                                  Kit suppression de direction assistéeKit suppression de direction assistée
                                                                                                                                                                                                                                      Kit suppression de direction assistée comprenant la poulie folle et son support.
                                                                                                                                                                                                                                      €199.00Price