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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: Entretien
  • Categories: Support moteur
  • Categories: Suralimentation (Turbo)
En Stock
€150.77 Price
En Stock
€150.77 Price
Bride de turbo Megane N4
      Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
      €150.77Price
      Bride de turbo Megane N4
          Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
          €150.77Price
          En Stock
          €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
                  €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
                          Pige de Calage Vilebrequin F4R Clio RS Megane RS
                              Prevent catastrophic engine failure during your timing belt replacement with this professional-grade Crankshaft Timing Pin F4R Clio RS Megane RS . Engineered specifically to match the official factory blueprints of Renault Sport power units, this high-tensile steel tool...
                              €41.40Price
                              Pige de Calage Vilebrequin F4R Clio RS Megane RS
                                  Prevent catastrophic engine failure during your timing belt replacement with this professional-grade Crankshaft Timing Pin F4R Clio RS Megane RS . Engineered specifically to match the official factory blueprints of Renault Sport power units, this high-tensile steel tool...
                                  €41.40Price
                                  Dispo selon configuration
                                  €169.00 €209.02 Regular price -€40.02 off Price
                                  Dispo selon configuration
                                  €169.00 €209.02 Regular price -€40.02 off Price
                                  COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                                    • Pack
                                    Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                                    €169.00€209.02Regular price-€40.02 offPrice
                                    COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                                      • Pack
                                      Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                                      €169.00€209.02Regular price-€40.02 offPrice
                                      En Stock
                                      €112.69 Price
                                      En Stock
                                      €112.69 Price
                                      Vis de Culasse (x10)
                                          Ensemble de vis de culasse pour Clio 3 RS, Megane 2 RS, Megane 3 RS, Clio 2 RS et Megane 2 RS Véritable produit d'origine
                                          €112.69Price
                                          Vis de Culasse (x10)
                                              Ensemble de vis de culasse pour Clio 3 RS, Megane 2 RS, Megane 3 RS, Clio 2 RS et Megane 2 RS Véritable produit d'origine
                                              €112.69Price
                                              En Stock
                                              €12.00 Price
                                              En Stock
                                              €12.00 Price
                                              Bidon de 2 L ELF 700 ST 10w40Bidon de 2 L ELF 700 ST 10w40
                                                  Bidon de 2L de ELF 700 ST 10W40 Huile Préconisé par Renault l'entretien de la gamme RS comprenant Clio 16S et Williams, Twingo RS, Clio RS, Megane RS..
                                                  €12.00Price
                                                  Bidon de 2 L ELF 700 ST 10w40Bidon de 2 L ELF 700 ST 10w40
                                                      Bidon de 2L de ELF 700 ST 10W40 Huile Préconisé par Renault l'entretien de la gamme RS comprenant Clio 16S et Williams, Twingo RS, Clio RS, Megane RS..
                                                      €12.00Price
                                                      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
                                                              €90.50 €120.66 Regular price -25% off Price
                                                              En Stock
                                                              €90.50 €120.66 Regular price -25% off Price
                                                              Huile moteur HTX 3823 0W20 4LHuile moteur HTX 3823 0W20 4L
                                                                  Huile moteur HTX 3823 0W20 4L Référence: 7711167580
                                                                  €90.50€120.66Regular price-25% offPrice
                                                                  Huile moteur HTX 3823 0W20 4LHuile moteur HTX 3823 0W20 4L
                                                                      Huile moteur HTX 3823 0W20 4L Référence: 7711167580
                                                                      €90.50€120.66Regular price-25% offPrice
                                                                      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
                                                                                      €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
                                                                                              €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
                                                                                                      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
                                                                                                              Dispo selon configuration
                                                                                                              €67.23 €74.70 Regular price -10% off Price
                                                                                                              Dispo selon configuration
                                                                                                              €67.23 €74.70 Regular price -10% off Price
                                                                                                              Kit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GTKit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GT
                                                                                                                • Pack
                                                                                                                Kit Vidange Elf Evolution SXR comprenant 3 bidons de 2 Litres d'huile Elf Evolution SXR 5w40 (préconisation Constructeur), 1 filtre à huile Renault et 1 joint de vidange
                                                                                                                €67.23€74.70Regular price-10% offPrice
                                                                                                                Kit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GTKit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GT
                                                                                                                  • Pack
                                                                                                                  Kit Vidange Elf Evolution SXR comprenant 3 bidons de 2 Litres d'huile Elf Evolution SXR 5w40 (préconisation Constructeur), 1 filtre à huile Renault et 1 joint de vidange
                                                                                                                  €67.23€74.70Regular price-10% offPrice
                                                                                                                  En Stock
                                                                                                                  €198.25 Price
                                                                                                                  En Stock
                                                                                                                  €198.25 Price
                                                                                                                  Kit Joint Refection moteur Origine Clio 3 RS
                                                                                                                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                                                      €198.25Price
                                                                                                                      Kit Joint Refection moteur Origine Clio 3 RS
                                                                                                                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                                                          €198.25Price
                                                                                                                          En Stock
                                                                                                                          €15.42 Price
                                                                                                                          En Stock
                                                                                                                          €15.42 Price
                                                                                                                          Huile moteur Total quartz racing 10w60
                                                                                                                              Huile moteur Total Quartz Racing 10w60 Produit préconisé par Renault sport pour la Mégane N4 Référence: 7711166390 Vendu en bidon de 1L
                                                                                                                              €15.42Price
                                                                                                                              Huile moteur Total quartz racing 10w60
                                                                                                                                  Huile moteur Total Quartz Racing 10w60 Produit préconisé par Renault sport pour la Mégane N4 Référence: 7711166390 Vendu en bidon de 1L
                                                                                                                                  €15.42Price
                                                                                                                                  En Stock
                                                                                                                                  €7.27 €8.50 Regular price -€1.23 off Price
                                                                                                                                  En Stock
                                                                                                                                  €7.27 €8.50 Regular price -€1.23 off Price
                                                                                                                                  Genuine Renault Oil Filter - Twingo 2 RS, Clio RS, Megane RS, WilliamsGenuine Renault Oil Filter - Twingo 2 RS, Clio RS, Megane RS, Williams
                                                                                                                                    • On sale!
                                                                                                                                    The oil filter is the guardian of your engine's cleanliness. This genuine Renault product is specifically designed for the engines of the Twingo 2 RS, Clio 2 RS, Clio 3 RS, Megane 2 RS, Clio 16S , and Clio Williams . It is essential for a successful oil change , ensuring optimal filtration of impurities and protecting internal components from premature wear.
                                                                                                                                    €7.27€8.50Regular price-€1.23 offPrice
                                                                                                                                    Genuine Renault Oil Filter - Twingo 2 RS, Clio RS, Megane RS, WilliamsGenuine Renault Oil Filter - Twingo 2 RS, Clio RS, Megane RS, Williams
                                                                                                                                      • On sale!
                                                                                                                                      The oil filter is the guardian of your engine's cleanliness. This genuine Renault product is specifically designed for the engines of the Twingo 2 RS, Clio 2 RS, Clio 3 RS, Megane 2 RS, Clio 16S , and Clio Williams . It is essential for a successful oil change , ensuring optimal filtration of impurities and protecting internal components from premature wear.
                                                                                                                                      €7.27€8.50Regular price-€1.23 offPrice
                                                                                                                                      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
                                                                                                                                              High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                                                                                                                                  Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                                                                                                                                  €10.93Price
                                                                                                                                                  High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                                                                                                                                      Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                                                                                                                                      €10.93Price
                                                                                                                                                      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
                                                                                                                                                              En Stock
                                                                                                                                                              €22.74 Price
                                                                                                                                                              En Stock
                                                                                                                                                              €22.74 Price
                                                                                                                                                              Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                                                                                                                  Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                                                                                                                  €22.74Price
                                                                                                                                                                  Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                                                                                                                      Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                                                                                                                      €22.74Price
                                                                                                                                                                      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
                                                                                                                                                                              €20.80 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €20.80 Price
                                                                                                                                                                              Exhaust Manifold Gasket | Renault Twingo 2 RS / R2
                                                                                                                                                                                  Avoid exhaust gas leaks and loss of sealing at the exhaust manifold of your Renault Twingo 2 RS . This exhaust manifold gasket is designed for the 1.6 16V K4M engine and is suitable for sporting applications including the...
                                                                                                                                                                                  €20.80Price
                                                                                                                                                                                  Exhaust Manifold Gasket | Renault Twingo 2 RS / R2
                                                                                                                                                                                      Avoid exhaust gas leaks and loss of sealing at the exhaust manifold of your Renault Twingo 2 RS . This exhaust manifold gasket is designed for the 1.6 16V K4M engine and is suitable for sporting applications including the...
                                                                                                                                                                                      €20.80Price
                                                                                                                                                                                      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
                                                                                                                                                                                              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