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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: Circuit d'air
  • Categories: Entretien
  • Categories: Suralimentation (Turbo)
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
          Dump Valve Megane 3 RS avec Kit de montageDump Valve Megane 3 RS avec Kit de montage
              Kit Dump Valve Forge. Circuit ouvert. Ce mode de fonctionnement est reconnaissable au PSSCHHIIIITTT qui se laisse entendre lors du changement de rapport Le kit Comprend, la Dump Valve, 2 colliers, un raccord inox, et un tube coudé et le bouchon nécessaire à boucher le trou lors de la suppression de la dump valve d'origine (pas present dans tous les kits que l'on trouve sur le net). Idéal sur...
              €261.86Price
              Dump Valve Megane 3 RS avec Kit de montageDump Valve Megane 3 RS avec Kit de montage
                  Kit Dump Valve Forge. Circuit ouvert. Ce mode de fonctionnement est reconnaissable au PSSCHHIIIITTT qui se laisse entendre lors du changement de rapport Le kit Comprend, la Dump Valve, 2 colliers, un raccord inox, et un tube coudé et le bouchon nécessaire à boucher le trou lors de la suppression de la dump valve d'origine (pas present dans tous les kits que l'on trouve sur le net). Idéal sur...
                  €261.86Price
                  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
                          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
                                  €8.52 €11.03 Regular price -€2.51 off Price
                                  En Stock
                                  €8.52 €11.03 Regular price -€2.51 off Price
                                  Filtre à huile Megane 3 RSFiltre à huile Megane 3 RS
                                      The Mégane 3 RS oil filter provides optimal protection and performance for your engine, ensuring efficient filtration of impurities and long-lasting durability , even in the most demanding conditions.
                                      €8.52€11.03Regular price-€2.51 offPrice
                                      Filtre à huile Megane 3 RSFiltre à huile Megane 3 RS
                                          The Mégane 3 RS oil filter provides optimal protection and performance for your engine, ensuring efficient filtration of impurities and long-lasting durability , even in the most demanding conditions.
                                          €8.52€11.03Regular price-€2.51 offPrice
                                          Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                              Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                              €117.43Price
                                              Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                  Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                  €117.43Price
                                                  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
                                                          En Stock
                                                          €50.86 Price
                                                          En Stock
                                                          €50.86 Price
                                                          Manchon pipe de remplissage réservoir Twingo 2 RS
                                                              Manchon pipe de remplissage réservoir Twingo 2 RS
                                                              €50.86Price
                                                              Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                  Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                  €50.86Price
                                                                  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
                                                                          €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
                                                                                  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
                                                                                          Joint anti-usure jonction écope divergent Twingo R2
                                                                                              Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                              €8.48Price
                                                                                              Joint anti-usure jonction écope divergent Twingo R2
                                                                                                  Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                                  €8.48Price
                                                                                                  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
                                                                                                          €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
                                                                                                                  €220.46 Price
                                                                                                                  En Stock
                                                                                                                  €220.46 Price
                                                                                                                  Dump Valve Forge Recirculation Megane RS
                                                                                                                      Maximize your engine's responsiveness with the Forge Motorsport Recirculation Dump Valve for Renault Megane 2 RS and Megane 3 RS (reference FMDVRMR ). Unlike atmospheric blow-off valves, this recirculation version diverts air back into the intake system to...
                                                                                                                      €220.46Price
                                                                                                                      Dump Valve Forge Recirculation Megane RS
                                                                                                                          Maximize your engine's responsiveness with the Forge Motorsport Recirculation Dump Valve for Renault Megane 2 RS and Megane 3 RS (reference FMDVRMR ). Unlike atmospheric blow-off valves, this recirculation version diverts air back into the intake system to...
                                                                                                                          €220.46Price
                                                                                                                          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
                                                                                                                                  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
                                                                                                                                          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
                                                                                                                                                  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
                                                                                                                                                          €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
                                                                                                                                                                  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
                                                                                                                                                                          Kit Joint Spy Arbres à Cames + Vis de Poulie Clio 2 RS
                                                                                                                                                                              Kit Joint Spy Arbres à Cames + Vis de Poulie Kit indispensable pour proceder au changement de la distribution sur Clio 2 RS
                                                                                                                                                                              €54.58Price
                                                                                                                                                                              Kit Joint Spy Arbres à Cames + Vis de Poulie Clio 2 RS
                                                                                                                                                                                  Kit Joint Spy Arbres à Cames + Vis de Poulie Kit indispensable pour proceder au changement de la distribution sur Clio 2 RS
                                                                                                                                                                                  €54.58Price
                                                                                                                                                                                  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
                                                                                                                                                                                          Renault Camshaft Dephaser Seal – Clio 2/3 RS & Mégane 3 RSRenault Camshaft Dephaser Seal – Clio 2/3 RS & Mégane 3 RS
                                                                                                                                                                                              An aged or damaged seal around the camshaft timing solenoid can lead to oil leaks and additional engine maintenance. The Renault camshaft dephaser solenoid oil seal (reference 7700106385) is designed to provide sealing at the solenoid mounting point on compatible variable...
                                                                                                                                                                                              €16.84Price
                                                                                                                                                                                              Renault Camshaft Dephaser Seal – Clio 2/3 RS & Mégane 3 RSRenault Camshaft Dephaser Seal – Clio 2/3 RS & Mégane 3 RS
                                                                                                                                                                                                  An aged or damaged seal around the camshaft timing solenoid can lead to oil leaks and additional engine maintenance. The Renault camshaft dephaser solenoid oil seal (reference 7700106385) is designed to provide sealing at the solenoid mounting point on compatible variable...
                                                                                                                                                                                                  €16.84Price
                                                                                                                                                                                                  Motul Engine Flush 300mL Pre-Oil Change for Sports Engines
                                                                                                                                                                                                      Optimize your engine's health with Motul Engine Flush (300mL). This high-performance pre-oil change treatment is essential for removing deposits, sludge, and combustion residues before introducing fresh oil. Specially formulated for performance...
                                                                                                                                                                                                      €10.75Price
                                                                                                                                                                                                      Motul Engine Flush 300mL Pre-Oil Change for Sports Engines
                                                                                                                                                                                                          Optimize your engine's health with Motul Engine Flush (300mL). This high-performance pre-oil change treatment is essential for removing deposits, sludge, and combustion residues before introducing fresh oil. Specially formulated for performance...
                                                                                                                                                                                                          €10.75Price
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €129.34 Price
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €129.34 Price
                                                                                                                                                                                                          Carter de protection Courroie de distribution Clio RS
                                                                                                                                                                                                              Pièce empêchant le passage de la courroie d'accessoires dans la distribution Compatible avec Clio 2 RS, Clio 3 RS La mise en place sur Clio 2 nécessite une legere découpe du carter en plastique  Fourni sans les vis, veuillez consulter les produits associés en bas de page
                                                                                                                                                                                                              €129.34Price
                                                                                                                                                                                                              Carter de protection Courroie de distribution Clio RS
                                                                                                                                                                                                                  Pièce empêchant le passage de la courroie d'accessoires dans la distribution Compatible avec Clio 2 RS, Clio 3 RS La mise en place sur Clio 2 nécessite une legere découpe du carter en plastique  Fourni sans les vis, veuillez consulter les produits associés en bas de page
                                                                                                                                                                                                                  €129.34Price
                                                                                                                                                                                                                  Entretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 CupEntretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                                      Entretoise galet distribution culasse Clio Gr N 8200607654
                                                                                                                                                                                                                      €12.06Price
                                                                                                                                                                                                                      Entretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 CupEntretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                                          Entretoise galet distribution culasse Clio Gr N 8200607654
                                                                                                                                                                                                                          €12.06Price
                                                                                                                                                                                                                          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
                                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                                  €17.45 Price
                                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                                  €17.45 Price
                                                                                                                                                                                                                                  Support inférieur écope boitier filtre Twingo R2
                                                                                                                                                                                                                                      Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                                                                                                                                                                      €17.45Price
                                                                                                                                                                                                                                      Support inférieur écope boitier filtre Twingo R2
                                                                                                                                                                                                                                          Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                                                                                                                                                                          €17.45Price