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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: Refroidissement
  • Categories: Support moteur
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
          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
                  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
                          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
                              Bidon de 5L de ELF HTX Collection 20w50ELF HTX Collection 20w50 5L - Porsche & Alpine Classic
                                  Protect the original powertrain of your automotive icon with ELF HTX Collection 20w50 mineral engine oil in a 5L jug . Specifically formulated for vintage mechanics and classic historic engines, this high-end formula guarantees consistent oil pressure and unmatched...
                                  €63.62Price
                                  Bidon de 5L de ELF HTX Collection 20w50ELF HTX Collection 20w50 5L - Porsche & Alpine Classic
                                      Protect the original powertrain of your automotive icon with ELF HTX Collection 20w50 mineral engine oil in a 5L jug . Specifically formulated for vintage mechanics and classic historic engines, this high-end formula guarantees consistent oil pressure and unmatched...
                                      €63.62Price
                                      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
                                              €28.80 Price
                                              En Stock
                                              €28.80 Price
                                              Courroie accessoire Clio Gr N ou Rs avec montage type Ragnotti
                                                  Renault Clio R3 Max Accessory Belt (128mm Pulley) High-performance accessory belt for Renault Clio R3 Max with 128mm crankshaft pulley. Optimize your race Clio's transmission. Discover complementary products at the bottom of the page.
                                                  €28.80Price
                                                  Courroie accessoire Clio Gr N ou Rs avec montage type Ragnotti
                                                      Renault Clio R3 Max Accessory Belt (128mm Pulley) High-performance accessory belt for Renault Clio R3 Max with 128mm crankshaft pulley. Optimize your race Clio's transmission. Discover complementary products at the bottom of the page.
                                                      €28.80Price
                                                      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
                                                              Joint répartiteur admission ( plenum ) Twingo 2 RS, R1 et R2
                                                                  Joint répartiteur admission Twingo RS R1 et R2
                                                                  €26.36Price
                                                                  Joint répartiteur admission ( plenum ) Twingo 2 RS, R1 et R2
                                                                      Joint répartiteur admission Twingo RS R1 et R2
                                                                      €26.36Price
                                                                      En Stock
                                                                      €59.00 €69.41 Regular price -15% off Price
                                                                      En Stock
                                                                      €59.00 €69.41 Regular price -15% off Price
                                                                      Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                                                                          Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                                                                          €59.00€69.41Regular price-15% offPrice
                                                                          Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                                                                              Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                                                                              €59.00€69.41Regular price-15% 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
                                                                                      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
                                                                                              En Stock
                                                                                              €139.18 €231.97 Regular price -40% off Price
                                                                                              En Stock
                                                                                              €139.18 €231.97 Regular price -40% off Price
                                                                                              Kit Distribution Clio 1.8 16S et WilliamsKit Distribution Clio 1.8 16S et Williams
                                                                                                  Kit distribution Renault pour Clio 1.8 16S Le kit contient la courroie et les 2 galets En cas de doute nous consulter.
                                                                                                  €139.18€231.97Regular price-40% offPrice
                                                                                                  Kit Distribution Clio 1.8 16S et WilliamsKit Distribution Clio 1.8 16S et Williams
                                                                                                      Kit distribution Renault pour Clio 1.8 16S Le kit contient la courroie et les 2 galets En cas de doute nous consulter.
                                                                                                      €139.18€231.97Regular price-40% offPrice
                                                                                                      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
                                                                                                              En Stock
                                                                                                              €277.74 €396.77 Regular price -30% off Price
                                                                                                              En Stock
                                                                                                              €277.74 €396.77 Regular price -30% off Price
                                                                                                              Embrayage Complet Origine Megane 3 RS
                                                                                                                  Renault Mégane 3 RS Clutch Kit (Genuine) Replace your worn clutch with this genuine Renault kit, designed specifically for the Mégane 3 RS (all versions). Ensures optimal transmission and durable performance. Essential for maintaining your sports vehicle's performance.
                                                                                                                  €277.74€396.77Regular price-30% offPrice
                                                                                                                  Embrayage Complet Origine Megane 3 RS
                                                                                                                      Renault Mégane 3 RS Clutch Kit (Genuine) Replace your worn clutch with this genuine Renault kit, designed specifically for the Mégane 3 RS (all versions). Ensures optimal transmission and durable performance. Essential for maintaining your sports vehicle's performance.
                                                                                                                      €277.74€396.77Regular price-30% offPrice
                                                                                                                      Renault Sport camshaft alignment tool for F4R, F4Rt, and K4M engines, SKU: 1496.Camshaft Timing Tool | Renault Clio, Megane, Twingo RS
                                                                                                                          Protect your engine block against catastrophic mechanical failure during structural timing belt overhauls with this professional RENAULT Camshaft Timing Tool . Specifically engineered to slot into the rear alignment grooves of Renault Sport twin-cam engines (covering F4R,...
                                                                                                                          €96.37Price
                                                                                                                          Renault Sport camshaft alignment tool for F4R, F4Rt, and K4M engines, SKU: 1496.Camshaft Timing Tool | Renault Clio, Megane, Twingo RS
                                                                                                                              Protect your engine block against catastrophic mechanical failure during structural timing belt overhauls with this professional RENAULT Camshaft Timing Tool . Specifically engineered to slot into the rear alignment grooves of Renault Sport twin-cam engines (covering F4R,...
                                                                                                                              €96.37Price
                                                                                                                              Dispo selon configuration
                                                                                                                              €61.15 €71.94 Regular price -15% off Price
                                                                                                                              Dispo selon configuration
                                                                                                                              €61.15 €71.94 Regular price -15% off Price
                                                                                                                              Kit Vidange Elf SXRKit Vidange Elf SXR
                                                                                                                                • Pack
                                                                                                                                Kit Vidange ELF SXR, filtre à huile Renault pour Clio 2 RS, Clio 3 RS et Megane 2 RS
                                                                                                                                €61.15€71.94Regular price-15% offPrice
                                                                                                                                Kit Vidange Elf SXRKit Vidange Elf SXR
                                                                                                                                  • Pack
                                                                                                                                  Kit Vidange ELF SXR, filtre à huile Renault pour Clio 2 RS, Clio 3 RS et Megane 2 RS
                                                                                                                                  €61.15€71.94Regular price-15% offPrice
                                                                                                                                  En Stock
                                                                                                                                  €30.64 Price
                                                                                                                                  En Stock
                                                                                                                                  €30.64 Price
                                                                                                                                  Joint tournant (joint spy vilebrequin coté volant moteur)
                                                                                                                                      The original Renault flywheel side oil seal is an essential part to ensure engine sealing for your Renault Clio 2 RS, Gr N, X65 Cup, Clio 3 RS, R3, X85 Cup, Mégane 2 RS, and Mégane 3 RS . Prevent oil leaks and maintain your vehicle's performance with this authentic replacement part.
                                                                                                                                      €30.64Price
                                                                                                                                      Joint tournant (joint spy vilebrequin coté volant moteur)
                                                                                                                                          The original Renault flywheel side oil seal is an essential part to ensure engine sealing for your Renault Clio 2 RS, Gr N, X65 Cup, Clio 3 RS, R3, X85 Cup, Mégane 2 RS, and Mégane 3 RS . Prevent oil leaks and maintain your vehicle's performance with this authentic replacement part.
                                                                                                                                          €30.64Price
                                                                                                                                          Mecacyl CR 100 ml
                                                                                                                                              Protect your high-performance engine's internal components with the Mecacyl CR 100 ml engine hyper-lubricant. This unique surface treatment mixes directly with your fresh oil to drastically reduce internal friction, lower operating temperatures, and optimize engine...
                                                                                                                                              €28.50Price
                                                                                                                                              Mecacyl CR 100 ml
                                                                                                                                                  Protect your high-performance engine's internal components with the Mecacyl CR 100 ml engine hyper-lubricant. This unique surface treatment mixes directly with your fresh oil to drastically reduce internal friction, lower operating temperatures, and optimize engine...
                                                                                                                                                  €28.50Price
                                                                                                                                                  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
                                                                                                                                                          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
                                                                                                                                                                  €63.30 €74.47 Regular price -15% off Price
                                                                                                                                                                  Dispo selon configuration
                                                                                                                                                                  €63.30 €74.47 Regular price -15% off Price
                                                                                                                                                                  Complete Engine Oil Change Kit for Renault Megane 3 RS (ELF 5W40 Oil & Renault Filter)Complete Engine Oil Change Kit for Renault Megane 3 RS (ELF 5W40 Oil & Renault Filter)
                                                                                                                                                                    • Pack
                                                                                                                                                                    Ensure the longevity and performance of your Renault Megane 3 RS with our complete oil change kit . It includes 6 liters of ELF SRX 5W40 oil (the oil recommended by the manufacturer during vehicle development), a genuine Renault oil filter , and the drain plug gasket . Essential for optimal...
                                                                                                                                                                    €63.30€74.47Regular price-15% offPrice
                                                                                                                                                                    Complete Engine Oil Change Kit for Renault Megane 3 RS (ELF 5W40 Oil & Renault Filter)Complete Engine Oil Change Kit for Renault Megane 3 RS (ELF 5W40 Oil & Renault Filter)
                                                                                                                                                                      • Pack
                                                                                                                                                                      Ensure the longevity and performance of your Renault Megane 3 RS with our complete oil change kit . It includes 6 liters of ELF SRX 5W40 oil (the oil recommended by the manufacturer during vehicle development), a genuine Renault oil filter , and the drain plug gasket . Essential for optimal...
                                                                                                                                                                      €63.30€74.47Regular price-15% offPrice
                                                                                                                                                                      En Stock
                                                                                                                                                                      €10.03 Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €10.03 Price
                                                                                                                                                                      Bouchon étanchéité aac échappement
                                                                                                                                                                          Camshaft Exhaust End Sealing Plug – Renault The Renault camshaft sealing plug, reference 7700274026 , is an engine component designed to seal an opening in the cylinder head. It helps maintain...
                                                                                                                                                                          €10.03Price
                                                                                                                                                                          Bouchon étanchéité aac échappement
                                                                                                                                                                              Camshaft Exhaust End Sealing Plug – Renault The Renault camshaft sealing plug, reference 7700274026 , is an engine component designed to seal an opening in the cylinder head. It helps maintain...
                                                                                                                                                                              €10.03Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €39.82 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €39.82 Price
                                                                                                                                                                              Silent Bloc Powerflex Anti Cabrage Sup Clio 3 RS
                                                                                                                                                                                  Silent Bloc Powerflex Anti Cabrage Superieur pour Clio 3 RS Produit à inserieur en lieu et place du silent bloc d'origine
                                                                                                                                                                                  €39.82Price
                                                                                                                                                                                  Silent Bloc Powerflex Anti Cabrage Sup Clio 3 RS
                                                                                                                                                                                      Silent Bloc Powerflex Anti Cabrage Superieur pour Clio 3 RS Produit à inserieur en lieu et place du silent bloc d'origine
                                                                                                                                                                                      €39.82Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €55.68 Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €55.68 Price
                                                                                                                                                                                      Tuyau 200-06 lg:300 connection rampe Tatuus
                                                                                                                                                                                          Tuyau 200-06 lg:300 connection rampe Tatuus Réference: 7711155525
                                                                                                                                                                                          €55.68Price
                                                                                                                                                                                          Tuyau 200-06 lg:300 connection rampe Tatuus
                                                                                                                                                                                              Tuyau 200-06 lg:300 connection rampe Tatuus Réference: 7711155525
                                                                                                                                                                                              €55.68Price
                                                                                                                                                                                              Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                                                                                                                  Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                                                                                                                  €173.57Price
                                                                                                                                                                                                  Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                                                                                                                      Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                                                                                                                      €173.57Price