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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: Alimentation
  • Categories: Allumage
  • Categories: Support moteur
  • Categories: Suralimentation (Turbo)
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
          €720.00 Price
          En Stock
          €720.00 Price
          Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
              Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
              €720.00Price
              Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
                  Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
                  €720.00Price
                  En Stock
                  €80.84 €115.49 Regular price -30% off Price
                  En Stock
                  €80.84 €115.49 Regular price -30% off Price
                  Jeu de Bougies Origine Megane 3 RS et N4
                      Do not let poor combustion stifle the potential of your F4RT engine. This set of 4 genuine Renault spark plugs is specifically calibrated to meet the extreme thermal demands of the Renault Megane 3 RS (250, 265, and 275 hp). By choosing these manufacturer-certified plugs, you avoid misfires under full load and protect your cylinders from the risks of...
                      €80.84€115.49Regular price-30% offPrice
                      Jeu de Bougies Origine Megane 3 RS et N4
                          Do not let poor combustion stifle the potential of your F4RT engine. This set of 4 genuine Renault spark plugs is specifically calibrated to meet the extreme thermal demands of the Renault Megane 3 RS (250, 265, and 275 hp). By choosing these manufacturer-certified plugs, you avoid misfires under full load and protect your cylinders from the risks of...
                          €80.84€115.49Regular price-30% offPrice
                          Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                              The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                              €191.53Price
                              Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                  The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                  €191.53Price
                                  Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                      Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                      €138.05Price
                                      Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                          Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                          €138.05Price
                                          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
                                                      En Stock
                                                      €178.04 Price
                                                      En Stock
                                                      €178.04 Price
                                                      Pompe à Essence Clio 2 RS et X65 Cup
                                                          Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                          €178.04Price
                                                          Pompe à Essence Clio 2 RS et X65 Cup
                                                              Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                              €178.04Price
                                                              En Stock
                                                              €81.58 Price
                                                              En Stock
                                                              €81.58 Price
                                                              Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                                  Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                                  €81.58Price
                                                                  Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                                      Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                                      €81.58Price
                                                                      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
                                                                              Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                • Pack
                                                                                Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                €269.74Price
                                                                                Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                  • Pack
                                                                                  Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                  €269.74Price
                                                                                  Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                      Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                      €119.40Price
                                                                                      Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                          Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                          €119.40Price
                                                                                          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
                                                                                                  €37.52 Price
                                                                                                  En Stock
                                                                                                  €37.52 Price
                                                                                                  Raccord 90° de rampe d'injection Clio Gr N
                                                                                                      Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                                                                      €37.52Price
                                                                                                      Raccord 90° de rampe d'injection Clio Gr N
                                                                                                          Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                                                                          €37.52Price
                                                                                                          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
                                                                                                                  Dispo selon configuration
                                                                                                                  €65.11 Price
                                                                                                                  Dispo selon configuration
                                                                                                                  €65.11 Price
                                                                                                                  T de raccord de Dump Megane 2 RS
                                                                                                                      T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                                                                      €65.11Price
                                                                                                                      T de raccord de Dump Megane 2 RS
                                                                                                                          T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                                                                          €65.11Price
                                                                                                                          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
                                                                                                                                  €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
                                                                                                                                          En Stock
                                                                                                                                          €36.05 Price
                                                                                                                                          En Stock
                                                                                                                                          €36.05 Price
                                                                                                                                          Jeu de Bougies Renault Clio 16S
                                                                                                                                              Jeu de Bougies Renault (fabriqué par NGK) (Vendu par 4) pour Clio 16S Produit d'origine Renault
                                                                                                                                              €36.05Price
                                                                                                                                              Jeu de Bougies Renault Clio 16S
                                                                                                                                                  Jeu de Bougies Renault (fabriqué par NGK) (Vendu par 4) pour Clio 16S Produit d'origine Renault
                                                                                                                                                  €36.05Price
                                                                                                                                                  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
                                                                                                                                                          €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