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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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Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
      Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
      €54.25Price
      Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
          Collection Entrainement pompe à huile Clio 2 RS, Gr N et X65Cup
          €54.25Price
          En Stock
          €50.73 €72.47 Regular price -30% off Price
          En Stock
          €50.73 €72.47 Regular price -30% off Price
          Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
              Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
              €50.73€72.47Regular price-30% offPrice
              Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
                  Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
                  €50.73€72.47Regular price-30% offPrice
                  Outil de blocage Poulie Arbres à cames F4R Clio RS Megane RSOutil de blocage Poulie Arbres à cames F4R Clio RS Megane RS
                      Véritable outil d'origine pour le blocage des poulies d'arbres à cames nécessaire pour le remplacement de la distribution pour les moteurs F4R de Clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS. Kit Spécifique au F4R Renault Sport
                      €139.02Price
                      Outil de blocage Poulie Arbres à cames F4R Clio RS Megane RSOutil de blocage Poulie Arbres à cames F4R Clio RS Megane RS
                          Véritable outil d'origine pour le blocage des poulies d'arbres à cames nécessaire pour le remplacement de la distribution pour les moteurs F4R de Clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS. Kit Spécifique au F4R Renault Sport
                          €139.02Price
                          En Stock
                          €224.35 Price
                          En Stock
                          €224.35 Price
                          Kit Joint Refection moteur Origine Clio 2 RS
                              Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                              €224.35Price
                              Kit Joint Refection moteur Origine Clio 2 RS
                                  Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                  €224.35Price
                                  Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                      Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                      €55.88Price
                                      Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                          Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                          €55.88Price
                                          En Stock
                                          €19.30 €25.79 Regular price -€6.49 off Price
                                          En Stock
                                          €19.30 €25.79 Regular price -€6.49 off Price
                                          Courroie accessoire Twingo RS et R1
                                              Don't risk an unexpected breakdown! This summary concerns the Genuine RENAULT Accessory Belt for the Renault Twingo 2 RS and Renault Wind 1.6 16v models. This is an essential part for the smooth running of your sports engine. Failing to replace it in time risks costly damage. ...
                                              €19.30€25.79Regular price-€6.49 offPrice
                                              Courroie accessoire Twingo RS et R1
                                                  Don't risk an unexpected breakdown! This summary concerns the Genuine RENAULT Accessory Belt for the Renault Twingo 2 RS and Renault Wind 1.6 16v models. This is an essential part for the smooth running of your sports engine. Failing to replace it in time risks costly damage. ...
                                                  €19.30€25.79Regular price-€6.49 offPrice
                                                  DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                      Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                      €224.09Price
                                                      DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                          Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                          €224.09Price
                                                          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
                                                              €3.00 Price
                                                              En Stock
                                                              €3.00 Price
                                                              Joint bimatiere 16mm
                                                                  The 16mm bimaterial gasket provides a reliable and durable sealing solution, suitable for various industrial, automotive, and domestic applications . Made from robust materials, it ensures a precise fit, easy installation, and optimal performance even under demanding conditions such as high temperatures and pressures.
                                                                  €3.00Price
                                                                  Joint bimatiere 16mm
                                                                      The 16mm bimaterial gasket provides a reliable and durable sealing solution, suitable for various industrial, automotive, and domestic applications . Made from robust materials, it ensures a precise fit, easy installation, and optimal performance even under demanding conditions such as high temperatures and pressures.
                                                                      €3.00Price
                                                                      En Stock
                                                                      €197.06 Price
                                                                      En Stock
                                                                      €197.06 Price
                                                                      Poulie de dephasage Clio 3 RS - Megane 3 RSPoulie de dephasage Clio 3 RS - Megane 3 RS
                                                                          Poulie de déphasage Veritable Produit Renault vendu dans sa boite
                                                                          €197.06Price
                                                                          Poulie de dephasage Clio 3 RS - Megane 3 RSPoulie de dephasage Clio 3 RS - Megane 3 RS
                                                                              Poulie de déphasage Veritable Produit Renault vendu dans sa boite
                                                                              €197.06Price
                                                                              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
                                                                                      €158.84 €252.12 Regular price -37% off Price
                                                                                      En Stock
                                                                                      €158.84 €252.12 Regular price -37% off Price
                                                                                      Kit Distribution origine Clio 2 RSGenuine Renault Timing Kit - Clio 2 RS / Gr N / Cup
                                                                                          Ensure your engine's longevity with this genuine RENAULT timing belt kit , engineered for the high-performance demands of the Renault Clio 2 RS , as well as Group N and X65 Cup racing versions. This complete pack guarantees maintenance that meets Renault Sport standards. ...
                                                                                          €158.84€252.12Regular price-37% offPrice
                                                                                          Kit Distribution origine Clio 2 RSGenuine Renault Timing Kit - Clio 2 RS / Gr N / Cup
                                                                                              Ensure your engine's longevity with this genuine RENAULT timing belt kit , engineered for the high-performance demands of the Renault Clio 2 RS , as well as Group N and X65 Cup racing versions. This complete pack guarantees maintenance that meets Renault Sport standards. ...
                                                                                              €158.84€252.12Regular price-37% offPrice
                                                                                              Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
                                                                                                  Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
                                                                                                  €28.78Price
                                                                                                  Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
                                                                                                      Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
                                                                                                      €28.78Price
                                                                                                      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
                                                                                                              €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
                                                                                                                      €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
                                                                                                                              €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
                                                                                                                                      €77.92 €111.31 Regular price -30% off Price
                                                                                                                                      En Stock
                                                                                                                                      €77.92 €111.31 Regular price -30% off Price
                                                                                                                                      Kit joints spy et vis arbres à cames
                                                                                                                                          Kit joints spy et vis arbres à cames
                                                                                                                                          €77.92€111.31Regular price-30% offPrice
                                                                                                                                          Kit joints spy et vis arbres à cames
                                                                                                                                              Kit joints spy et vis arbres à cames
                                                                                                                                              €77.92€111.31Regular price-30% offPrice
                                                                                                                                              En Stock
                                                                                                                                              €1.32 Price
                                                                                                                                              En Stock
                                                                                                                                              €1.32 Price
                                                                                                                                              Joint Vidange Boite diam 16
                                                                                                                                                  Gearbox Drain Plug Washer – 16 mm The Renault drain plug washer, reference 7703062062 , is a sealing component designed to help prevent oil leaks at a compatible drain...
                                                                                                                                                  €1.32Price
                                                                                                                                                  Joint Vidange Boite diam 16
                                                                                                                                                      Gearbox Drain Plug Washer – 16 mm The Renault drain plug washer, reference 7703062062 , is a sealing component designed to help prevent oil leaks at a compatible drain...
                                                                                                                                                      €1.32Price
                                                                                                                                                      En Stock
                                                                                                                                                      €99.36 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €99.36 Price
                                                                                                                                                      Coussinets bielle ( X48 ) Clio 2 RS Mégane 2 RSCoussinets bielle ( X48 ) Clio 2 RS Mégane 2 RS
                                                                                                                                                          Coussinets bielle ( X=48 ) Le prix est pour 8 Produit remplacé, vous trouverez le produit de remplacement ci dessous ⬇️
                                                                                                                                                          €99.36Price
                                                                                                                                                          Coussinets bielle ( X48 ) Clio 2 RS Mégane 2 RSCoussinets bielle ( X48 ) Clio 2 RS Mégane 2 RS
                                                                                                                                                              Coussinets bielle ( X=48 ) Le prix est pour 8 Produit remplacé, vous trouverez le produit de remplacement ci dessous ⬇️
                                                                                                                                                              €99.36Price
                                                                                                                                                              En Stock
                                                                                                                                                              €54.41 Price
                                                                                                                                                              En Stock
                                                                                                                                                              €54.41 Price
                                                                                                                                                              Cache bouchons arbres à cames moteur F4R
                                                                                                                                                                  Cache bouchons arbres à cames moteur F4R Kit de 2 plaques de fermeture moteur 7711155481
                                                                                                                                                                  €54.41Price
                                                                                                                                                                  Cache bouchons arbres à cames moteur F4R
                                                                                                                                                                      Cache bouchons arbres à cames moteur F4R Kit de 2 plaques de fermeture moteur 7711155481
                                                                                                                                                                      €54.41Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €18.79 Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €18.79 Price
                                                                                                                                                                      ELF Tranself NFX SAE 75W Gearbox Oil – 1L
                                                                                                                                                                          ELF Tranself NFX SAE 75W Gearbox Oil – 1 Litre The ELF Tranself NFX SAE 75W gearbox oil is a synthetic transmission lubricant designed for manual gearboxes requiring...
                                                                                                                                                                          €18.79Price
                                                                                                                                                                          ELF Tranself NFX SAE 75W Gearbox Oil – 1L
                                                                                                                                                                              ELF Tranself NFX SAE 75W Gearbox Oil – 1 Litre The ELF Tranself NFX SAE 75W gearbox oil is a synthetic transmission lubricant designed for manual gearboxes requiring...
                                                                                                                                                                              €18.79Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €35.68 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €35.68 Price
                                                                                                                                                                              Butée basse pédale d'accélérateur Twingo R2Butée basse pédale d'accélérateur Twingo R2
                                                                                                                                                                                  Butée basse pédale d'accélérateur Twingo R2 Référence: 7711157182
                                                                                                                                                                                  €35.68Price
                                                                                                                                                                                  Butée basse pédale d'accélérateur Twingo R2Butée basse pédale d'accélérateur Twingo R2
                                                                                                                                                                                      Butée basse pédale d'accélérateur Twingo R2 Référence: 7711157182
                                                                                                                                                                                      €35.68Price
                                                                                                                                                                                      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
                                                                                                                                                                                              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
                                                                                                                                                                                                      Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                          The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                                                                                                                                                                          €35.80Price
                                                                                                                                                                                                          Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                              The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                                                                                                                                                                              €35.80Price