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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: Préparation intérieure
  • Categories: Support moteur
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
          Silent Bloc Arrière Powerflex Black Series Biellette Anti Cabrage
              Silent Bloc Arrière Powerflex Black Series qui vient en lieu et place du silent bloc d'origine sur la biellette anti cabrage pour Megane 2 RS Pièce compatible uniquement avec la biellette en Aluminium (ne convient pas celle de couleur noire)
              €59.18Price
              Silent Bloc Arrière Powerflex Black Series Biellette Anti Cabrage
                  Silent Bloc Arrière Powerflex Black Series qui vient en lieu et place du silent bloc d'origine sur la biellette anti cabrage pour Megane 2 RS Pièce compatible uniquement avec la biellette en Aluminium (ne convient pas celle de couleur noire)
                  €59.18Price
                  En Stock
                  €60.00 Price
                  En Stock
                  €60.00 Price
                  Silent Bloc Arrière Powerflex Biellette Anti Cabrage
                      Silent Bloc Arrière qui vient en lieu et place du silent bloc d'origine sur la biellette anti cabrage pour Megane 2 RS Pièce compatible uniquement avec la biellette en Aluminium (ne convient pas celle de couleur noire)
                      €60.00Price
                      Silent Bloc Arrière Powerflex Biellette Anti Cabrage
                          Silent Bloc Arrière qui vient en lieu et place du silent bloc d'origine sur la biellette anti cabrage pour Megane 2 RS Pièce compatible uniquement avec la biellette en Aluminium (ne convient pas celle de couleur noire)
                          €60.00Price
                          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
                                  €107.84 Price
                                  En Stock
                                  €107.84 Price
                                  Renault Mégane 3 RS gearbox mount 112200015R – upper elastic mountingGearbox Mount Renault Mégane 3 RS
                                      The 112200015R elastic mounting is an original-type Renault component designed for the Renault Mégane 3 RS . It is used on the upper gearbox mounting assembly and contributes to controlling drivetrain movement while maintaining the correct positioning of the gearbox and powertrain. For owners of a Mégane 3 RS , a worn or damaged...
                                      €107.84Price
                                      Renault Mégane 3 RS gearbox mount 112200015R – upper elastic mountingGearbox Mount Renault Mégane 3 RS
                                          The 112200015R elastic mounting is an original-type Renault component designed for the Renault Mégane 3 RS . It is used on the upper gearbox mounting assembly and contributes to controlling drivetrain movement while maintaining the correct positioning of the gearbox and powertrain. For owners of a Mégane 3 RS , a worn or damaged...
                                          €107.84Price
                                          Support Moteur Clio 2 RS (Tampon Hydro-Elastique)Genuine Renault Clio 2 RS 2.0L F4R Hydro-Elastic Buffer Engine Mount
                                              Do not lose driving precision and acoustic comfort : replace your worn-out engine mount with the Genuine Renault part. This hydro-elastic buffer (timing belt side) is specifically designed for the Renault Clio 2 RS and its 2.0L 16V F4R engine . It...
                                              €105.43Price
                                              Support Moteur Clio 2 RS (Tampon Hydro-Elastique)Genuine Renault Clio 2 RS 2.0L F4R Hydro-Elastic Buffer Engine Mount
                                                  Do not lose driving precision and acoustic comfort : replace your worn-out engine mount with the Genuine Renault part. This hydro-elastic buffer (timing belt side) is specifically designed for the Renault Clio 2 RS and its 2.0L 16V F4R engine . It...
                                                  €105.43Price
                                                  En Stock
                                                  €167.06 Price
                                                  En Stock
                                                  €167.06 Price
                                                  Support Moteur Anti Cabrage Renforcé Twingo 2 RS
                                                      Support moteur anti cabrage renforcé Vibra Technics pour Twingo 2 RS, Replace avantageusement le support anti cabrage d'origine qui se détériore rapidement laissant place à un claquement lors de passage de vitesse ou autres.
                                                      €167.06Price
                                                      Support Moteur Anti Cabrage Renforcé Twingo 2 RS
                                                          Support moteur anti cabrage renforcé Vibra Technics pour Twingo 2 RS, Replace avantageusement le support anti cabrage d'origine qui se détériore rapidement laissant place à un claquement lors de passage de vitesse ou autres.
                                                          €167.06Price
                                                          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
                                                                  Kit 3 supports moteur type Clio 2 CupKit 3 supports moteur type Clio 2 Cup
                                                                      Kit 3 supports moteur pour Clio 2 RS2/RS3 type Clio 2 Cup, le kit comprend le support moteur supérieur, celui de la boîte de vitesse et celui au niveau de la barre stabilisatrice appelé OS ou Anti Cabrage. Supports moteur rigides limitant les mouvements du moteur destiné à une utilisation non routière Produit parfaitement compatible avec la boite d'origine
                                                                      €761.27Price
                                                                      Kit 3 supports moteur type Clio 2 CupKit 3 supports moteur type Clio 2 Cup
                                                                          Kit 3 supports moteur pour Clio 2 RS2/RS3 type Clio 2 Cup, le kit comprend le support moteur supérieur, celui de la boîte de vitesse et celui au niveau de la barre stabilisatrice appelé OS ou Anti Cabrage. Supports moteur rigides limitant les mouvements du moteur destiné à une utilisation non routière Produit parfaitement compatible avec la boite d'origine
                                                                          €761.27Price
                                                                          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
                                                                                  €29.40 Price
                                                                                  En Stock
                                                                                  €29.40 Price
                                                                                  Silent Bloc Powerflex Support MoteurSilent Bloc Powerflex Support Moteur
                                                                                      Silent Bloc Powerflex de support moteur coté Distribution pour Clio 3 RS et Megane 2 RS Produit à inserer en lieu et place sur silent bloc d'origine
                                                                                      €29.40Price
                                                                                      Silent Bloc Powerflex Support MoteurSilent Bloc Powerflex Support Moteur
                                                                                          Silent Bloc Powerflex de support moteur coté Distribution pour Clio 3 RS et Megane 2 RS Produit à inserer en lieu et place sur silent bloc d'origine
                                                                                          €29.40Price
                                                                                          Silent Bloc Powerflex Black Series Anti Cabrage Inferieur Clio 3 RSSilent Bloc Powerflex Black Series Anti Cabrage Inferieur Clio 3 RS
                                                                                              Silent Bloc Powerflex Black Series Anti Cabrage Inferieur pour Clio 3 RS Produit à inserieur en lieu et place du silent bloc d'origine ATTENTION NE CONVIENT PAS A LA NOUVELLE VERSION DE SUPPORT D'ORIGINE, EN CAS DE DOUTE NOUS CONSULTER Compatible uniquement avec le support en photo
                                                                                              €34.00Price
                                                                                              Silent Bloc Powerflex Black Series Anti Cabrage Inferieur Clio 3 RSSilent Bloc Powerflex Black Series Anti Cabrage Inferieur Clio 3 RS
                                                                                                  Silent Bloc Powerflex Black Series Anti Cabrage Inferieur pour Clio 3 RS Produit à inserieur en lieu et place du silent bloc d'origine ATTENTION NE CONVIENT PAS A LA NOUVELLE VERSION DE SUPPORT D'ORIGINE, EN CAS DE DOUTE NOUS CONSULTER Compatible uniquement avec le support en photo
                                                                                                  €34.00Price
                                                                                                  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
                                                                                                              En Stock
                                                                                                              €144.00 Price
                                                                                                              En Stock
                                                                                                              €144.00 Price
                                                                                                              Support boite Renforcé Compétition GT TURBO
                                                                                                                  Support Boite renforcé Vibra Technics pour Super 5 GT TURBO version Competition
                                                                                                                  €144.00Price
                                                                                                                  Support boite Renforcé Compétition GT TURBO
                                                                                                                      Support Boite renforcé Vibra Technics pour Super 5 GT TURBO version Competition
                                                                                                                      €144.00Price
                                                                                                                      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
                                                                                                                              €96.00 Price
                                                                                                                              En Stock
                                                                                                                              €96.00 Price
                                                                                                                              Support Moteur Renforcé Compétition GT TURBOSupport Moteur Renforcé Compétition GT TURBO
                                                                                                                                  Support Moteur droit (coté alternateur) renforcé Vibra Technics version Compétition pour Super 5 GT TURBO
                                                                                                                                  €96.00Price
                                                                                                                                  Support Moteur Renforcé Compétition GT TURBOSupport Moteur Renforcé Compétition GT TURBO
                                                                                                                                      Support Moteur droit (coté alternateur) renforcé Vibra Technics version Compétition pour Super 5 GT TURBO
                                                                                                                                      €96.00Price
                                                                                                                                      En Stock
                                                                                                                                      €87.29 Price
                                                                                                                                      En Stock
                                                                                                                                      €87.29 Price
                                                                                                                                      Support Moteur Renforcé GT TURBOSupport Moteur Renforcé GT TURBO
                                                                                                                                          Support Moteur droit (coté alternateur) renforcé Vibra Technics pour Super 5 GT TURBO
                                                                                                                                          €87.29Price
                                                                                                                                          Support Moteur Renforcé GT TURBOSupport Moteur Renforcé GT TURBO
                                                                                                                                              Support Moteur droit (coté alternateur) renforcé Vibra Technics pour Super 5 GT TURBO
                                                                                                                                              €87.29Price
                                                                                                                                              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
                                                                                                                                                      En Stock
                                                                                                                                                      €120.00 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €120.00 Price
                                                                                                                                                      Support Moteur Ar Renforcé Compétition GT TURBOSupport Moteur Ar Renforcé Compétition GT TURBO
                                                                                                                                                          Support Moteur Arriere renforcé Vibra Technics pour Super 5 GT TURBO version Competition
                                                                                                                                                          €120.00Price
                                                                                                                                                          Support Moteur Ar Renforcé Compétition GT TURBOSupport Moteur Ar Renforcé Compétition GT TURBO
                                                                                                                                                              Support Moteur Arriere renforcé Vibra Technics pour Super 5 GT TURBO version Competition
                                                                                                                                                              €120.00Price
                                                                                                                                                              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