Pensez à sélectionner votre vehicule pour limiter les resultats de recherche

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.

Active filters

  • Categories: Alimentation
  • Categories: Allumage
  • Categories: Entretien
  • Categories: Préparation intérieure
En Stock
€363.23 Price
En Stock
€363.23 Price
Aluminium Timing Cover Renault Mégane 4 RS 280 300Timing Cover | Renault Mégane 4 RS 280/300
      The main timing cover is an essential engine component designed to protect and enclose the timing system while maintaining proper protection of the internal engine components. This aluminium timing cover is designed for the Renault Mégane 4 RS...
      €363.23Price
      Aluminium Timing Cover Renault Mégane 4 RS 280 300Timing Cover | Renault Mégane 4 RS 280/300
          The main timing cover is an essential engine component designed to protect and enclose the timing system while maintaining proper protection of the internal engine components. This aluminium timing cover is designed for the Renault Mégane 4 RS...
          €363.23Price
          En Stock
          €36.30 €39.60 Regular price -€3.30 off Price
          En Stock
          €36.30 €39.60 Regular price -€3.30 off Price
          Pack de 12 bouteilles nettoyant frein BARDAHL 600ML
            • Pack
            Pack de 12 bouteilles nettoyant frein BARDAHL 600ML
            €36.30€39.60Regular price-€3.30 offPrice
            Pack de 12 bouteilles nettoyant frein BARDAHL 600ML
              • Pack
              Pack de 12 bouteilles nettoyant frein BARDAHL 600ML
              €36.30€39.60Regular price-€3.30 offPrice
              En Stock
              €322.56 Price
              En Stock
              €322.56 Price
              Piston EVO 2013 avec clips et axe Twingo R2
                  Piston EVO 2013 avec clips et axe Twingo R2 Référence: 7711167672
                  €322.56Price
                  Piston EVO 2013 avec clips et axe Twingo R2
                      Piston EVO 2013 avec clips et axe Twingo R2 Référence: 7711167672
                      €322.56Price
                      Bardahl Brake Cleaner 600 ML Braking System Maintenance
                          Bardahl Brake Cleaner 600 ML High-performance brake cleaner from the renowned Bardahl brand. Powerful formula to quickly eliminate grease, oil, dust, and other contaminants from braking systems. Convenient 600 ml aerosol packaging. Discover other associated maintenance and braking products on this page for...
                          €3.30Price
                          Bardahl Brake Cleaner 600 ML Braking System Maintenance
                              Bardahl Brake Cleaner 600 ML High-performance brake cleaner from the renowned Bardahl brand. Powerful formula to quickly eliminate grease, oil, dust, and other contaminants from braking systems. Convenient 600 ml aerosol packaging. Discover other associated maintenance and braking products on this page for...
                              €3.30Price
                              En Stock
                              €48.12 Price
                              En Stock
                              €48.12 Price
                              Genuine Renault Fuel Feed Pipe - Clio 2 RS 172 182hpGenuine Renault Fuel Feed Pipe - Clio 2 RS 172 182hp
                                  Secure your Clio 2 RS fuel system with this genuine Renault fuel feed pipe . Specifically designed for 2.0 16V (172hp and 182hp) engines, this line ensures the critical connection after the fuel filter . Don't risk it with universal parts: choose OEM quality (references 8200057327 /...
                                  €48.12Price
                                  Genuine Renault Fuel Feed Pipe - Clio 2 RS 172 182hpGenuine Renault Fuel Feed Pipe - Clio 2 RS 172 182hp
                                      Secure your Clio 2 RS fuel system with this genuine Renault fuel feed pipe . Specifically designed for 2.0 16V (172hp and 182hp) engines, this line ensures the critical connection after the fuel filter . Don't risk it with universal parts: choose OEM quality (references 8200057327 /...
                                      €48.12Price
                                      Ressort de soupape Clio 2 RS y compris Gr N et X65 Cup
                                          Ressort de soupape Clio 2 RS y compris Gr N et X65 Cup. Convient pour les soupapes d'admission et d'échappement
                                          €15.01Price
                                          Ressort de soupape Clio 2 RS y compris Gr N et X65 Cup
                                              Ressort de soupape Clio 2 RS y compris Gr N et X65 Cup. Convient pour les soupapes d'admission et d'échappement
                                              €15.01Price
                                              En Stock
                                              €59.28 Price
                                              En Stock
                                              €59.28 Price
                                              Renault Twingo R2 plain crankshaft bearing – ref. 7711167587Plain Crankshaft Bearing Renault Twingo R2
                                                  The 7711167587 plain crankshaft bearing is a replacement engine component designed for the Renault Twingo R2 . It is part of the crankshaft bearing system and contributes to correct crankshaft guidance and engine lubrication. On a Renault Twingo R2 competition engine , crankshaft bearings are exposed to significant mechanical and...
                                                  €59.28Price
                                                  Renault Twingo R2 plain crankshaft bearing – ref. 7711167587Plain Crankshaft Bearing Renault Twingo R2
                                                      The 7711167587 plain crankshaft bearing is a replacement engine component designed for the Renault Twingo R2 . It is part of the crankshaft bearing system and contributes to correct crankshaft guidance and engine lubrication. On a Renault Twingo R2 competition engine , crankshaft bearings are exposed to significant mechanical and...
                                                      €59.28Price
                                                      En Stock
                                                      €75.68 Price
                                                      En Stock
                                                      €75.68 Price
                                                      Coussinet de Vilebrequin rainuré 195cv Twingo R2Coussinet de Vilebrequin rainuré 195cv Twingo R2
                                                          Coussinet de Vilebrequin rainuré 195cv Twingo R2 Référence: 7711167588
                                                          €75.68Price
                                                          Coussinet de Vilebrequin rainuré 195cv Twingo R2Coussinet de Vilebrequin rainuré 195cv Twingo R2
                                                              Coussinet de Vilebrequin rainuré 195cv Twingo R2 Référence: 7711167588
                                                              €75.68Price
                                                              En Stock
                                                              €369.21 €923.02 Regular price -60% off Price
                                                              En Stock
                                                              €369.21 €923.02 Regular price -60% off Price
                                                              Genuine Renault Fuel Tank for Renault Clio 4 RS - Part No. 172032566RGenuine Renault Fuel Tank for Renault Clio 4 RS - Part No. 172032566R
                                                                  Ensure the safety and reliability of your Renault Clio 4 RS with this genuine Renault fuel tank , part number 172032566R . A crucial component for your fuel system's proper functioning, it prevents leaks and guarantees a stable fuel supply, essential for maintaining your sports vehicle's performance. Take no risks, opt for manufacturer...
                                                                  €369.21€923.02Regular price-60% offPrice
                                                                  Genuine Renault Fuel Tank for Renault Clio 4 RS - Part No. 172032566RGenuine Renault Fuel Tank for Renault Clio 4 RS - Part No. 172032566R
                                                                      Ensure the safety and reliability of your Renault Clio 4 RS with this genuine Renault fuel tank , part number 172032566R . A crucial component for your fuel system's proper functioning, it prevents leaks and guarantees a stable fuel supply, essential for maintaining your sports vehicle's performance. Take no risks, opt for manufacturer...
                                                                      €369.21€923.02Regular price-60% offPrice
                                                                      En Stock
                                                                      €314.72 Price
                                                                      En Stock
                                                                      €314.72 Price
                                                                      Genuine Renault Downstream O2 Sensor Mégane 3 RS
                                                                          Downstream Oxygen Sensor (Lambda Sensor) Genuine Renault for Mégane 3 RS Ensure the proper functioning of your emissions control system and optimize the engine management of your Renault Mégane 3 RS with this downstream oxygen sensor (lambda sensor) genuine Renault , located after the catalytic converter . Important:...
                                                                          €314.72Price
                                                                          Genuine Renault Downstream O2 Sensor Mégane 3 RS
                                                                              Downstream Oxygen Sensor (Lambda Sensor) Genuine Renault for Mégane 3 RS Ensure the proper functioning of your emissions control system and optimize the engine management of your Renault Mégane 3 RS with this downstream oxygen sensor (lambda sensor) genuine Renault , located after the catalytic converter . Important:...
                                                                              €314.72Price
                                                                              En Stock
                                                                              €5,790.00 Price
                                                                              En Stock
                                                                              €5,790.00 Price
                                                                                  Moteur K4M 1.6 16v Vendu avec embrayage, volant moteur, papillon, bobines, bougies... Moteur neuf (pas un echange standard)
                                                                                  €5,790.00Price
                                                                                      Moteur K4M 1.6 16v Vendu avec embrayage, volant moteur, papillon, bobines, bougies... Moteur neuf (pas un echange standard)
                                                                                      €5,790.00Price
                                                                                      En Stock
                                                                                      €15.20 Price
                                                                                      En Stock
                                                                                      €15.20 Price
                                                                                      Genuine Renault Battery Fixing Bracket - Clio 2 RSGenuine Renault Battery Fixing Bracket - Clio 2 RS
                                                                                          Don't risk a costly failure or damage! Get the genuine Renault Battery Fixing Bracket , the essential part to keep your Renault Clio 2 RS battery perfectly secured, even under the most sporty driving conditions. Avoid vibrations and short circuits. New product, guaranteed...
                                                                                          €15.20Price
                                                                                          Genuine Renault Battery Fixing Bracket - Clio 2 RSGenuine Renault Battery Fixing Bracket - Clio 2 RS
                                                                                              Don't risk a costly failure or damage! Get the genuine Renault Battery Fixing Bracket , the essential part to keep your Renault Clio 2 RS battery perfectly secured, even under the most sporty driving conditions. Avoid vibrations and short circuits. New product, guaranteed...
                                                                                              €15.20Price
                                                                                              En Stock
                                                                                              €7.55 Price
                                                                                              En Stock
                                                                                              €7.55 Price
                                                                                              Engine Undertray Fixing Screw Renault Clio 2 RS
                                                                                                  Renault Clio 2 RS Undertray Fixing Screw Fixing screw designed for securing the engine undertray on compatible Renault Clio 2 RS models. Suitable for replacing a missing or worn fastener to help keep the lower engine cover securely fitted.
                                                                                                  €7.55Price
                                                                                                  Engine Undertray Fixing Screw Renault Clio 2 RS
                                                                                                      Renault Clio 2 RS Undertray Fixing Screw Fixing screw designed for securing the engine undertray on compatible Renault Clio 2 RS models. Suitable for replacing a missing or worn fastener to help keep the lower engine cover securely fitted.
                                                                                                      €7.55Price
                                                                                                      En Stock
                                                                                                      €130.66 Price
                                                                                                      En Stock
                                                                                                      €130.66 Price
                                                                                                      Auxiliary Belt Tensioner Renault Megane 4 GT 205Auxiliary Belt Tensioner Renault Megane 4 GT 205
                                                                                                          Auxiliary Belt Tensioner – Renault Megane 4 GT 205 Auxiliary belt tensioner designed for compatible Renault Megane 4 GT 205 models. It helps maintain the correct tension of the auxiliary drive belt to support reliable operation of belt-driven engine accessories.
                                                                                                          €130.66Price
                                                                                                          Auxiliary Belt Tensioner Renault Megane 4 GT 205Auxiliary Belt Tensioner Renault Megane 4 GT 205
                                                                                                              Auxiliary Belt Tensioner – Renault Megane 4 GT 205 Auxiliary belt tensioner designed for compatible Renault Megane 4 GT 205 models. It helps maintain the correct tension of the auxiliary drive belt to support reliable operation of belt-driven engine accessories.
                                                                                                              €130.66Price
                                                                                                              Coussinets de Bielles Trimetal ergotés
                                                                                                                • Pack
                                                                                                                ACL RACE Grooved Connecting Rod Bearing Kit - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS engine with this ACL RACE grooved connecting rod bearing kit. Designed for modified or grooved connecting rods, they offer increased resistance and better lubrication. Essential for high-performance engines.
                                                                                                                €50.68Price
                                                                                                                Coussinets de Bielles Trimetal ergotés
                                                                                                                  • Pack
                                                                                                                  ACL RACE Grooved Connecting Rod Bearing Kit - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS engine with this ACL RACE grooved connecting rod bearing kit. Designed for modified or grooved connecting rods, they offer increased resistance and better lubrication. Essential for high-performance engines.
                                                                                                                  €50.68Price
                                                                                                                  Negative Battery Terminal Original Renault for Renault SportNegative Battery Terminal Original Renault for Renault Sport
                                                                                                                      Negative Battery Terminal Original Renault - Preserve the performance and safety of your Renault Sport. Compatible with Twingo 2 RS, Clio 3 RS, Megane 2 RS and Megane 3 RS. Discover also our other original Renault parts to optimize your vehicle.
                                                                                                                      €13.66Price
                                                                                                                      Negative Battery Terminal Original Renault for Renault SportNegative Battery Terminal Original Renault for Renault Sport
                                                                                                                          Negative Battery Terminal Original Renault - Preserve the performance and safety of your Renault Sport. Compatible with Twingo 2 RS, Clio 3 RS, Megane 2 RS and Megane 3 RS. Discover also our other original Renault parts to optimize your vehicle.
                                                                                                                          €13.66Price
                                                                                                                          En Stock
                                                                                                                          €5.53 Price
                                                                                                                          En Stock
                                                                                                                          €5.53 Price
                                                                                                                          Demi Bague conique soupape
                                                                                                                              Optimize the Performance and Reliability of Your Renault RS or Twingo RS with the Genuine Renault Valve Collet Manufactured by Renault, this valve collet is specifically designed to meet the precise requirements of Renault RS and Twingo RS engines. It delivers OEM-quality, durability, and performance, making it the ideal choice for drivers seeking reliability and...
                                                                                                                              €5.53Price
                                                                                                                              Demi Bague conique soupape
                                                                                                                                  Optimize the Performance and Reliability of Your Renault RS or Twingo RS with the Genuine Renault Valve Collet Manufactured by Renault, this valve collet is specifically designed to meet the precise requirements of Renault RS and Twingo RS engines. It delivers OEM-quality, durability, and performance, making it the ideal choice for drivers seeking reliability and...
                                                                                                                                  €5.53Price
                                                                                                                                  Cible capteur AAC moteur K4M Twingo 2 RS y compris R1 et R2Cible capteur AAC moteur K4M Twingo 2 RS y compris R1 et R2
                                                                                                                                      Cible capteur AAC moteur K4M Twingo 2 RS y compris R1 et R2
                                                                                                                                      €46.04Price
                                                                                                                                      Cible capteur AAC moteur K4M Twingo 2 RS y compris R1 et R2Cible capteur AAC moteur K4M Twingo 2 RS y compris R1 et R2
                                                                                                                                          Cible capteur AAC moteur K4M Twingo 2 RS y compris R1 et R2
                                                                                                                                          €46.04Price
                                                                                                                                          En Stock
                                                                                                                                          €31.26 Price
                                                                                                                                          En Stock
                                                                                                                                          €31.26 Price
                                                                                                                                          Collection de 7 vis volant moteur
                                                                                                                                              The official Renault Sport set of 7 flywheel bolts (ref. 7711150582 ) is a high-performance fastening kit, essential for competition vehicles such as Renault Twingo R1 , R2 , Clio 2 X65 Cup , Clio R3 , Clio 3 X85 Cup , and Megane N4 . Designed for secure and...
                                                                                                                                              €31.26Price
                                                                                                                                              Collection de 7 vis volant moteur
                                                                                                                                                  The official Renault Sport set of 7 flywheel bolts (ref. 7711150582 ) is a high-performance fastening kit, essential for competition vehicles such as Renault Twingo R1 , R2 , Clio 2 X65 Cup , Clio R3 , Clio 3 X85 Cup , and Megane N4 . Designed for secure and...
                                                                                                                                                  €31.26Price
                                                                                                                                                  En Stock
                                                                                                                                                  €2.52 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €2.52 Price
                                                                                                                                                  Ecrou H embase M6x100 Twingo 2 RS
                                                                                                                                                      Ecrou H embase M6x100 Twingo 2 RS Ecrou servant à la fixation du levier de frein à main, Connecteurs de batterie, Fixation boitier electronique Référence: 7703033159-7703033205
                                                                                                                                                      €2.52Price
                                                                                                                                                      Ecrou H embase M6x100 Twingo 2 RS
                                                                                                                                                          Ecrou H embase M6x100 Twingo 2 RS Ecrou servant à la fixation du levier de frein à main, Connecteurs de batterie, Fixation boitier electronique Référence: 7703033159-7703033205
                                                                                                                                                          €2.52Price
                                                                                                                                                          En Stock
                                                                                                                                                          €2.35 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €2.35 Price
                                                                                                                                                          Vis longue fixation pompe à huile Twingo 2 RS
                                                                                                                                                              Vis longue fixation pompe à huile Twingo 2 RS Référence: 7703002873-7703102107
                                                                                                                                                              €2.35Price
                                                                                                                                                              Vis longue fixation pompe à huile Twingo 2 RS
                                                                                                                                                                  Vis longue fixation pompe à huile Twingo 2 RS Référence: 7703002873-7703102107
                                                                                                                                                                  €2.35Price