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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'eau
  • Categories: Préparation intérieure
  • Categories: Refroidissement
  • Categories: Suralimentation (Turbo)
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
          Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
              Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
              €17.09Price
              Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                  Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                  €17.09Price
                  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
                          Dispo selon configuration
                          €6.00 Price
                          Dispo selon configuration
                          €6.00 Price
                          Tuyau de dépressionTuyau de dépression
                              Tuyau de depression de diamètre 4mm. Sert généralement pour l'installation de Dump Valve. Prix au metre
                              €6.00Price
                              Tuyau de dépressionTuyau de dépression
                                  Tuyau de depression de diamètre 4mm. Sert généralement pour l'installation de Dump Valve. Prix au metre
                                  €6.00Price
                                  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
                                          Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                              €0.23Price
                                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                                  Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                                  €0.23Price
                                                  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
                                                          €790.00 Price
                                                          En Stock
                                                          €790.00 Price
                                                          Echangeur Wagner Megane 3 RSEchangeur Wagner Megane 3 RS
                                                              Wagner Tuning Intercooler for Renault Mégane 3 RS: Boost your sports car's performance with this high-performance intercooler. Designed to efficiently cool the turbocharged air, it enhances your engine's power, torque, and reliability, while also giving your vehicle a sportier look.
                                                              €790.00Price
                                                              Echangeur Wagner Megane 3 RSEchangeur Wagner Megane 3 RS
                                                                  Wagner Tuning Intercooler for Renault Mégane 3 RS: Boost your sports car's performance with this high-performance intercooler. Designed to efficiently cool the turbocharged air, it enhances your engine's power, torque, and reliability, while also giving your vehicle a sportier look.
                                                                  €790.00Price
                                                                  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
                                                                      €133.31 Price
                                                                      En Stock
                                                                      €133.31 Price
                                                                      Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                          €133.31Price
                                                                          Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                              €133.31Price
                                                                              En Stock
                                                                              €198.25 Price
                                                                              En Stock
                                                                              €198.25 Price
                                                                              Kit Joint Refection moteur Origine Clio 3 RS
                                                                                  Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                  €198.25Price
                                                                                  Kit Joint Refection moteur Origine Clio 3 RS
                                                                                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                      €198.25Price
                                                                                      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
                                                                                              Durites de Reniflard et Wasegate Megane 2 RS
                                                                                                  Durites De reniflard Renforcées pour toutes Megane 2 RS. Produit de la marque Samco Sport Le kit est composé de 4 pièces.
                                                                                                  €82.00Price
                                                                                                  Durites de Reniflard et Wasegate Megane 2 RS
                                                                                                      Durites De reniflard Renforcées pour toutes Megane 2 RS. Produit de la marque Samco Sport Le kit est composé de 4 pièces.
                                                                                                      €82.00Price
                                                                                                      En Stock
                                                                                                      €56.11 Price
                                                                                                      En Stock
                                                                                                      €56.11 Price
                                                                                                      Électrovanne pilotée Megane 2 RSTurbo Boost Solenoid Valve Mégane 2 RS
                                                                                                          Turbo Boost Control Solenoid Valve – Renault Mégane 2 RS The turbo boost control solenoid valve, reference 8200702990 , is an engine management component designed to regulate the turbocharger...
                                                                                                          €56.11Price
                                                                                                          Électrovanne pilotée Megane 2 RSTurbo Boost Solenoid Valve Mégane 2 RS
                                                                                                              Turbo Boost Control Solenoid Valve – Renault Mégane 2 RS The turbo boost control solenoid valve, reference 8200702990 , is an engine management component designed to regulate the turbocharger...
                                                                                                              €56.11Price
                                                                                                              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
                                                                                                                      Durite modine/radiateur Clio 2 Cup
                                                                                                                          The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                                                          €77.62Price
                                                                                                                          Durite modine/radiateur Clio 2 Cup
                                                                                                                              The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                                                              €77.62Price
                                                                                                                              En Stock
                                                                                                                              €36.01 Price
                                                                                                                              En Stock
                                                                                                                              €36.01 Price
                                                                                                                              Kit ressorts Dump Valve Forge
                                                                                                                                  Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                                                                                                                  €36.01Price
                                                                                                                                  Kit ressorts Dump Valve Forge
                                                                                                                                      Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                                                                                                                      €36.01Price
                                                                                                                                      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
                                                                                                                                              En Stock
                                                                                                                                              €23.50 Price
                                                                                                                                              En Stock
                                                                                                                                              €23.50 Price
                                                                                                                                              Kit Revision Dump Valve Recirculation Forge
                                                                                                                                                  Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                                                                                                                                                  €23.50Price
                                                                                                                                                  Kit Revision Dump Valve Recirculation Forge
                                                                                                                                                      Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                                                                                                                                                      €23.50Price
                                                                                                                                                      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
                                                                                                                                                              €1.00 Price
                                                                                                                                                              En Stock
                                                                                                                                                              €1.00 Price
                                                                                                                                                              Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                                                  Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                                                  €1.00Price
                                                                                                                                                                  Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                                                      Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                                                      €1.00Price
                                                                                                                                                                      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
                                                                                                                                                                              €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
                                                                                                                                                                                      €345.64 Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €345.64 Price
                                                                                                                                                                                      Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                                                                                                          Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                                                                                                          €345.64Price
                                                                                                                                                                                          Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                                                                                                              Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                                                                                                              €345.64Price
                                                                                                                                                                                              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
                                                                                                                                                                                                      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