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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: Préparation intérieure
  • Categories: Suralimentation (Turbo)
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
          En Stock
          €244.00 Price
          En Stock
          €244.00 Price
          Wasegate Forge Megane RS
              Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
              €244.00Price
              Wasegate Forge Megane RS
                  Dotée d'un tarage plus ferme que le modèle d'origine, elle permet une mise en action plus rapide du turbo, et une pression de sural plus stable.
                  €244.00Price
                  En Stock
                  €70.25 Price
                  En Stock
                  €70.25 Price
                  Blue Crankshaft Half-Bearing Set
                      Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                      €70.25Price
                      Blue Crankshaft Half-Bearing Set
                          Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                          €70.25Price
                          En Stock
                          €1,326.07 Price
                          En Stock
                          €1,326.07 Price
                          AAC Admission loi 286TR2A2 Twingo R2 205
                              AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                              €1,326.07Price
                              AAC Admission loi 286TR2A2 Twingo R2 205
                                  AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                  €1,326.07Price
                                  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
                                      En Stock
                                      €71.22 €79.33 Regular price -€8.11 off Price
                                      En Stock
                                      €71.22 €79.33 Regular price -€8.11 off Price
                                      Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                          Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                          €71.22€79.33Regular price-€8.11 offPrice
                                          Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                              Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                              €71.22€79.33Regular price-€8.11 offPrice
                                              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
                                                      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
                                                              €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
                                                                      Raccord Pompe à essence Clio GrN
                                                                          Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                                                                          €50.45Price
                                                                          Raccord Pompe à essence Clio GrN
                                                                              Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                                                                              €50.45Price
                                                                              En Stock
                                                                              €57.84 Price
                                                                              En Stock
                                                                              €57.84 Price
                                                                              Capteur PMH Clio 2 RS
                                                                                  Capteur PMH Clio 2 RS Selon votre modèle actuel de PMH, il est peut être nécessaire de prendre l'adaptateur proposé en bas de page en supplément.
                                                                                  €57.84Price
                                                                                  Capteur PMH Clio 2 RS
                                                                                      Capteur PMH Clio 2 RS Selon votre modèle actuel de PMH, il est peut être nécessaire de prendre l'adaptateur proposé en bas de page en supplément.
                                                                                      €57.84Price
                                                                                      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
                                                                                              €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
                                                                                                      €47.34 Price
                                                                                                      En Stock
                                                                                                      €47.34 Price
                                                                                                      Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                                                                                                          Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                                                                                                          €47.34Price
                                                                                                          Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                                                                                                              Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                                                                                                              €47.34Price
                                                                                                              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
                                                                                                                      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
                                                                                                                              €251.47 Price
                                                                                                                              En Stock
                                                                                                                              €251.47 Price
                                                                                                                              Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                                                                                                                  Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                                                                                                                  €251.47Price
                                                                                                                                  Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                                                                                                                      Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                                                                                                                      €251.47Price
                                                                                                                                      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
                                                                                                                                              En Stock
                                                                                                                                              €81.65 Price
                                                                                                                                              En Stock
                                                                                                                                              €81.65 Price
                                                                                                                                              Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                                                                                                  Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                                                                                                  €81.65Price
                                                                                                                                                  Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                                                                                                      Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                                                                                                      €81.65Price
                                                                                                                                                      En Stock
                                                                                                                                                      €211.80 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €211.80 Price
                                                                                                                                                      Pompe à huileRenault Sport Oil Pump - Clio 2/3 RS & Megane 2/3 RS
                                                                                                                                                          Secure your engine block's lubrication with this high-performance oil pump for Renault 2.0L engines. Essential for maintaining constant oil pressure, it is compatible with Clio 2 RS , Clio 3 RS , as well as X65 Cup ,...
                                                                                                                                                          €211.80Price
                                                                                                                                                          Pompe à huileRenault Sport Oil Pump - Clio 2/3 RS & Megane 2/3 RS
                                                                                                                                                              Secure your engine block's lubrication with this high-performance oil pump for Renault 2.0L engines. Essential for maintaining constant oil pressure, it is compatible with Clio 2 RS , Clio 3 RS , as well as X65 Cup ,...
                                                                                                                                                              €211.80Price
                                                                                                                                                              En Stock
                                                                                                                                                              €88.16 Price
                                                                                                                                                              En Stock
                                                                                                                                                              €88.16 Price
                                                                                                                                                              Bougies Iridium Denso Megane RS
                                                                                                                                                                  Denso Iridium Spark Plugs for Mégane RS - Maximum Performance and Reliability Boost your Mégane RS's performance with Denso Iridium spark plugs, designed to deliver a stronger spark and more efficient combustion. With their iridium electrode, these spark plugs ensure better engine responsiveness, optimized fuel consumption, and increased longevity compared to standard plugs. ...
                                                                                                                                                                  €88.16Price
                                                                                                                                                                  Bougies Iridium Denso Megane RS
                                                                                                                                                                      Denso Iridium Spark Plugs for Mégane RS - Maximum Performance and Reliability Boost your Mégane RS's performance with Denso Iridium spark plugs, designed to deliver a stronger spark and more efficient combustion. With their iridium electrode, these spark plugs ensure better engine responsiveness, optimized fuel consumption, and increased longevity compared to standard plugs. ...
                                                                                                                                                                      €88.16Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €122.00 Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €122.00 Price
                                                                                                                                                                      ARP Uprated Rod Bolts | Renault Clio & Megane RS
                                                                                                                                                                          Protect your bottom end assembly against high-RPM failure with this premium Uprated ARP Rod Bolts Kit for Renault Clio 16S, Williams, Clio 2 3 RS, and Megane 2 3 RS , commercialized under the international part number ARP-216-6301 . Forged from premium ARP...
                                                                                                                                                                          €122.00Price
                                                                                                                                                                          ARP Uprated Rod Bolts | Renault Clio & Megane RS
                                                                                                                                                                              Protect your bottom end assembly against high-RPM failure with this premium Uprated ARP Rod Bolts Kit for Renault Clio 16S, Williams, Clio 2 3 RS, and Megane 2 3 RS , commercialized under the international part number ARP-216-6301 . Forged from premium ARP...
                                                                                                                                                                              €122.00Price
                                                                                                                                                                              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