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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: Kit Allègement
  • Categories: Suralimentation (Turbo)
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
          €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
                  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
                          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
                                  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
                                      €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
                                              €81.58 Price
                                              En Stock
                                              €81.58 Price
                                              Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                  Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                  €81.58Price
                                                  Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                      Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                      €81.58Price
                                                      Joint carter inférieur huile moteur Twingo RS y compris R1 et R2Joint carter inférieur huile moteur Twingo RS y compris R1 et R2
                                                          Joint carter inférieur huile moteur Twingo RS y compris R1 et R2
                                                          €95.21Price
                                                          Joint carter inférieur huile moteur Twingo RS y compris R1 et R2Joint carter inférieur huile moteur Twingo RS y compris R1 et R2
                                                              Joint carter inférieur huile moteur Twingo RS y compris R1 et R2
                                                              €95.21Price
                                                              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
                                                                      €43.02 Price
                                                                      En Stock
                                                                      €43.02 Price
                                                                      Joint Spy Vilebrequin coté distribution
                                                                          The original Renault crankshaft oil seal, timing side is an essential part to ensure crankshaft sealing in the engines of your Renault Clio 2 RS , Clio 2 GR N , Clio 2 X65 Cup , Clio 3 RS , Clio R3 , Clio 3 X85 Cup , Mégane 2 RS , Mégane 3 RS , and...
                                                                          €43.02Price
                                                                          Joint Spy Vilebrequin coté distribution
                                                                              The original Renault crankshaft oil seal, timing side is an essential part to ensure crankshaft sealing in the engines of your Renault Clio 2 RS , Clio 2 GR N , Clio 2 X65 Cup , Clio 3 RS , Clio R3 , Clio 3 X85 Cup , Mégane 2 RS , Mégane 3 RS , and...
                                                                              €43.02Price
                                                                              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
                                                                                      €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
                                                                                              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
                                                                                                  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
                                                                                                          €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
                                                                                                                  Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                                                      Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                                                      €119.40Price
                                                                                                                      Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                                                          Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                                                          €119.40Price
                                                                                                                          En Stock
                                                                                                                          €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
                                                                                                                                  Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
                                                                                                                                      Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
                                                                                                                                      €230.39Price
                                                                                                                                      Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
                                                                                                                                          Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
                                                                                                                                          €230.39Price
                                                                                                                                          En Stock
                                                                                                                                          €224.35 Price
                                                                                                                                          En Stock
                                                                                                                                          €224.35 Price
                                                                                                                                          Kit Joint Refection moteur Origine Clio 2 RS
                                                                                                                                              Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                                                                                                                              €224.35Price
                                                                                                                                              Kit Joint Refection moteur Origine Clio 2 RS
                                                                                                                                                  Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                                                                                                                                  €224.35Price
                                                                                                                                                  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
                                                                                                                                                      €4.37 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €4.37 Price
                                                                                                                                                      Bouchon de vidange carter d'huile moteur
                                                                                                                                                          Bouchon de vidange carter d'huile moteur Produit compatible pour Clio 2 RS, Clio 3 RS, Megane 2 RS et Megane 3 RS
                                                                                                                                                          €4.37Price
                                                                                                                                                          Bouchon de vidange carter d'huile moteur
                                                                                                                                                              Bouchon de vidange carter d'huile moteur Produit compatible pour Clio 2 RS, Clio 3 RS, Megane 2 RS et Megane 3 RS
                                                                                                                                                              €4.37Price
                                                                                                                                                              En Stock
                                                                                                                                                              €110.08 Price
                                                                                                                                                              En Stock
                                                                                                                                                              €110.08 Price
                                                                                                                                                              Galet tendeur accessoire Clio 3 RS - Megane 3 RS
                                                                                                                                                                  Galet tendeur accessoire Megane 3 RS Véritable produit d'origine
                                                                                                                                                                  €110.08Price
                                                                                                                                                                  Galet tendeur accessoire Clio 3 RS - Megane 3 RS
                                                                                                                                                                      Galet tendeur accessoire Megane 3 RS Véritable produit d'origine
                                                                                                                                                                      €110.08Price
                                                                                                                                                                      Genuine factory red liquid gasket resin for engine casing and valve cover sealing, SKU: 7711237640.
                                                                                                                                                                          Prevent oil weeping and critical oil pressure drops within your engine block with the Genuine Factory Resin Glue Red Liquid Gasket Compound . Specially formulated under official manufacturer part numbers 7711237640 , 7701421162 , and...
                                                                                                                                                                          €33.22Price
                                                                                                                                                                          Genuine factory red liquid gasket resin for engine casing and valve cover sealing, SKU: 7711237640.
                                                                                                                                                                              Prevent oil weeping and critical oil pressure drops within your engine block with the Genuine Factory Resin Glue Red Liquid Gasket Compound . Specially formulated under official manufacturer part numbers 7711237640 , 7701421162 , and...
                                                                                                                                                                              €33.22Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €345.64 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €345.64 Price
                                                                                                                                                                              Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                                                                                                  Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                                                                                                  €345.64Price
                                                                                                                                                                                  Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                                                                                                      Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                                                                                                      €345.64Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €14.89 Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €14.89 Price
                                                                                                                                                                                      Bouchon étanchéité aac admission
                                                                                                                                                                                          Renault Camshaft Intake Sealing Plug – Reference 7700106271 The Renault camshaft sealing plug, reference 7700106271 , is an engine component designed to seal an opening in the cylinder head...
                                                                                                                                                                                          €14.89Price
                                                                                                                                                                                          Bouchon étanchéité aac admission
                                                                                                                                                                                              Renault Camshaft Intake Sealing Plug – Reference 7700106271 The Renault camshaft sealing plug, reference 7700106271 , is an engine component designed to seal an opening in the cylinder head...
                                                                                                                                                                                              €14.89Price
                                                                                                                                                                                              En Stock
                                                                                                                                                                                              €211.24 Price
                                                                                                                                                                                              En Stock
                                                                                                                                                                                              €211.24 Price
                                                                                                                                                                                              Cablage Volant ALS Megane N4
                                                                                                                                                                                                  Optimize the management of your anti-lag system with the Genuine Renault Sport Steering Wheel ALS Wiring Harness (Part Number 7711167187) . Specifically engineered for the rally-spec Megane N4 , this motorsport-grade electrical loom ensures a shielded,...
                                                                                                                                                                                                  €211.24Price
                                                                                                                                                                                                  Cablage Volant ALS Megane N4
                                                                                                                                                                                                      Optimize the management of your anti-lag system with the Genuine Renault Sport Steering Wheel ALS Wiring Harness (Part Number 7711167187) . Specifically engineered for the rally-spec Megane N4 , this motorsport-grade electrical loom ensures a shielded,...
                                                                                                                                                                                                      €211.24Price