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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: Kit Allègement
  • Categories: Préparation intérieure
  • Categories: Suralimentation (Turbo)
En Stock
€27.42 Price
En Stock
€27.42 Price
Support bague étanchéité Twingo 2 RS et WindSupport bague étanchéité Twingo 2 RS et Wind
      Support bague étanchéité Twingo 2 RS et Wind Référence: 7700105179
      €27.42Price
      Support bague étanchéité Twingo 2 RS et WindSupport bague étanchéité Twingo 2 RS et Wind
          Support bague étanchéité Twingo 2 RS et Wind Référence: 7700105179
          €27.42Price
          En Stock
          €32.92 Price
          En Stock
          €32.92 Price
          Poussoir contre came rouleau Twingo 2 RS et WindPoussoir contre came rouleau Twingo 2 RS et Wind
              Poussoir contre came rouleau Twingo 2 RS et Wind Référence: 8200320561
              €32.92Price
              Poussoir contre came rouleau Twingo 2 RS et WindPoussoir contre came rouleau Twingo 2 RS et Wind
                  Poussoir contre came rouleau Twingo 2 RS et Wind Référence: 8200320561
                  €32.92Price
                  En Stock
                  €15.43 Price
                  En Stock
                  €15.43 Price
                  Centreur boite de vitesse et pompe à huileCentreur boite de vitesse et pompe à huile
                      Centreur boite de vitesse et pompe à huile Nous contacter en cas de doute sur la compatibilité avec votre véhicule Référence: 8200582334
                      €15.43Price
                      Centreur boite de vitesse et pompe à huileCentreur boite de vitesse et pompe à huile
                          Centreur boite de vitesse et pompe à huile Nous contacter en cas de doute sur la compatibilité avec votre véhicule Référence: 8200582334
                          €15.43Price
                          En Stock
                          €134.58 Price
                          En Stock
                          €134.58 Price
                          Capteur arbre à cames (déphasage) Twingo 2 RS y compris R1 et R2Camshaft Timing Solenoid – Twingo 2 RS R1 R2
                              Camshaft timing solenoid valve designed for the Renault Twingo 2 RS , including Twingo R1 and Twingo R2 competition versions. It plays an important role in controlling the engine's variable camshaft timing system. Suitable for replacing a worn or faulty...
                              €134.58Price
                              Capteur arbre à cames (déphasage) Twingo 2 RS y compris R1 et R2Camshaft Timing Solenoid – Twingo 2 RS R1 R2
                                  Camshaft timing solenoid valve designed for the Renault Twingo 2 RS , including Twingo R1 and Twingo R2 competition versions. It plays an important role in controlling the engine's variable camshaft timing system. Suitable for replacing a worn or faulty...
                                  €134.58Price
                                  En Stock
                                  €556.99 Price
                                  En Stock
                                  €556.99 Price
                                  Carter turbo-compresseur modifié Megane N4Carter turbo-compresseur modifié Megane N4
                                      Carter turbo-compresseur modifié Megane N4 Référence: 7711167373
                                      €556.99Price
                                      Carter turbo-compresseur modifié Megane N4Carter turbo-compresseur modifié Megane N4
                                          Carter turbo-compresseur modifié Megane N4 Référence: 7711167373
                                          €556.99Price
                                          Accessory Belt for AC Delete Kit - Renault Mégane 4 RS
                                              This Adapted Accessory Belt is a critical component for converting to an Air Conditioning Delete Kit on your Renault Mégane 4 RS . Its dimension is precisely defined to compensate for the removal of the AC compressor. This superior quality belt is essential for...
                                              €29.34Price
                                              Accessory Belt for AC Delete Kit - Renault Mégane 4 RS
                                                  This Adapted Accessory Belt is a critical component for converting to an Air Conditioning Delete Kit on your Renault Mégane 4 RS . Its dimension is precisely defined to compensate for the removal of the AC compressor. This superior quality belt is essential for...
                                                  €29.34Price
                                                  Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                      €187.01Price
                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                          Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                          €187.01Price
                                                          En Stock
                                                          €25.25 Price
                                                          En Stock
                                                          €25.25 Price
                                                          Accessory Belt for AC Delete Kit - Alpine A110
                                                              This Specific Accessory Belt is an essential component when installing an Air Conditioning Delete Kit on your Alpine A110 . Its length is adjusted to bypass the air conditioning compressor that has been removed. A high-quality part, it guarantees the correct...
                                                              €25.25Price
                                                              Accessory Belt for AC Delete Kit - Alpine A110
                                                                  This Specific Accessory Belt is an essential component when installing an Air Conditioning Delete Kit on your Alpine A110 . Its length is adjusted to bypass the air conditioning compressor that has been removed. A high-quality part, it guarantees the correct...
                                                                  €25.25Price
                                                                  En Stock
                                                                  €106.16 Price
                                                                  En Stock
                                                                  €106.16 Price
                                                                  Tuyau huile turbo Megane RS
                                                                      Protect your turbocharger's health with this genuine Renault turbo oil feed pipe . Designed for the Renault Megane 2 RS and Megane 3 RS , this line ensures optimal lubrication of the turbine shaft. As this is an evolved version of the original manufacturer part, a specific mounting adapter ...
                                                                      €106.16Price
                                                                      Tuyau huile turbo Megane RS
                                                                          Protect your turbocharger's health with this genuine Renault turbo oil feed pipe . Designed for the Renault Megane 2 RS and Megane 3 RS , this line ensures optimal lubrication of the turbine shaft. As this is an evolved version of the original manufacturer part, a specific mounting adapter ...
                                                                          €106.16Price
                                                                          Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
                                                                              The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
                                                                              €29.34Price
                                                                              Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
                                                                                  The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
                                                                                  €29.34Price
                                                                                  Gicleur Piston 1-3 Clio 2 RS 182 et Clio 3 RS
                                                                                      Protect the lower F4R engine of your Clio 2 RS 182, Clio 3 RS, or Megane 2 RS with this genuine Renault oil sprayer (oil jet) for cylinders 1 and 3. A critical component for piston cooling and lubrication, it guarantees the reliability and longevity of your engine. Don't neglect the protection of your F4R.
                                                                                      €14.65Price
                                                                                      Gicleur Piston 1-3 Clio 2 RS 182 et Clio 3 RS
                                                                                          Protect the lower F4R engine of your Clio 2 RS 182, Clio 3 RS, or Megane 2 RS with this genuine Renault oil sprayer (oil jet) for cylinders 1 and 3. A critical component for piston cooling and lubrication, it guarantees the reliability and longevity of your engine. Don't neglect the protection of your F4R.
                                                                                          €14.65Price
                                                                                          En Stock
                                                                                          €29.62 Price
                                                                                          En Stock
                                                                                          €29.62 Price
                                                                                          Vis creuse tuyauterie alimentation huile Megane RS
                                                                                              Vis creuse tuyauterie alimentation huile Megane 2 et 3 RS
                                                                                              €29.62Price
                                                                                              Vis creuse tuyauterie alimentation huile Megane RS
                                                                                                  Vis creuse tuyauterie alimentation huile Megane 2 et 3 RS
                                                                                                  €29.62Price
                                                                                                  En Stock
                                                                                                  €178.20 Price
                                                                                                  En Stock
                                                                                                  €178.20 Price
                                                                                                  Plaque reniflard Clio 2 RS 172
                                                                                                      Plaque de reniflard taillé massé venant en lieu et place de la plaque d'origine Ajout un raccord Dash permettant de venir connecter directement un recuperateur de vapeur d'huile. Cette piece est un serieux atout pour les véhicules ayant modifié le collecteur d'admission d'origine. Produit a completer avec un joint Loctite 5980.
                                                                                                      €178.20Price
                                                                                                      Plaque reniflard Clio 2 RS 172
                                                                                                          Plaque de reniflard taillé massé venant en lieu et place de la plaque d'origine Ajout un raccord Dash permettant de venir connecter directement un recuperateur de vapeur d'huile. Cette piece est un serieux atout pour les véhicules ayant modifié le collecteur d'admission d'origine. Produit a completer avec un joint Loctite 5980.
                                                                                                          €178.20Price
                                                                                                          En Stock
                                                                                                          €11.53 Price
                                                                                                          En Stock
                                                                                                          €11.53 Price
                                                                                                          Demi coussinet rainurés jaune vilebrequin K4M 854Demi coussinet rainurés jaune vilebrequin K4M 854
                                                                                                              Demi coussinet rainurés jaune vilebrequin K4M 854
                                                                                                              €11.53Price
                                                                                                              Demi coussinet rainurés jaune vilebrequin K4M 854Demi coussinet rainurés jaune vilebrequin K4M 854
                                                                                                                  Demi coussinet rainurés jaune vilebrequin K4M 854
                                                                                                                  €11.53Price
                                                                                                                  Dispo selon configuration
                                                                                                                  €379.68 €399.66 Regular price -€19.98 off Price
                                                                                                                  Dispo selon configuration
                                                                                                                  €379.68 €399.66 Regular price -€19.98 off Price
                                                                                                                  Kit Dump Valve HKS Megane 2 RS
                                                                                                                    • Pack
                                                                                                                    Kit complet permettant l'installation d'une dump valve HKS sans nécessiter de produit additionnel.
                                                                                                                    €379.68€399.66Regular price-€19.98 offPrice
                                                                                                                    Kit Dump Valve HKS Megane 2 RS
                                                                                                                      • Pack
                                                                                                                      Kit complet permettant l'installation d'une dump valve HKS sans nécessiter de produit additionnel.
                                                                                                                      €379.68€399.66Regular price-€19.98 offPrice
                                                                                                                      Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                          Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                                                                                          €2.34Price
                                                                                                                          Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                              Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                                                                                              €2.34Price
                                                                                                                              Dispo selon configuration
                                                                                                                              €330.87 €367.63 Regular price -€36.76 off Price
                                                                                                                              Dispo selon configuration
                                                                                                                              €330.87 €367.63 Regular price -€36.76 off Price
                                                                                                                              Kit Dump Valve HKS Megane 3 RSKit Dump Valve HKS Megane 3 RS
                                                                                                                                • Pack
                                                                                                                                Kit Dump Valve HKS Megane 3 RS Le kit est complet et permet donc de monter une dump HKS sans necessité d'acheter d'autres pieces.
                                                                                                                                €330.87€367.63Regular price-€36.76 offPrice
                                                                                                                                Kit Dump Valve HKS Megane 3 RSKit Dump Valve HKS Megane 3 RS
                                                                                                                                  • Pack
                                                                                                                                  Kit Dump Valve HKS Megane 3 RS Le kit est complet et permet donc de monter une dump HKS sans necessité d'acheter d'autres pieces.
                                                                                                                                  €330.87€367.63Regular price-€36.76 offPrice
                                                                                                                                  Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                                                                      Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                                                                      €36.80Price
                                                                                                                                      Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                                                                          Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                                                                          €36.80Price
                                                                                                                                          Collection de Ségments (X82.70)
                                                                                                                                              Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                                                                                                              €37.55Price
                                                                                                                                              Collection de Ségments (X82.70)
                                                                                                                                                  Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                                                                                                                  €37.55Price
                                                                                                                                                  Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                                                                                      Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                                                                                      €7.80Price
                                                                                                                                                      Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                                                                                          Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                                                                                          €7.80Price
                                                                                                                                                          En Stock
                                                                                                                                                          €133.31 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €133.31 Price
                                                                                                                                                          Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                                                                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                                              €133.31Price
                                                                                                                                                              Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                                                  €133.31Price
                                                                                                                                                                  Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                                                                                      Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                                                                                      €14.95Price
                                                                                                                                                                      Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                                                                                          Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                                                                                          €14.95Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €23.50 Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €23.50 Price
                                                                                                                                                                          Kit Revision Dump Valve Recirculation Forge
                                                                                                                                                                              Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                                                                                                                                                                              €23.50Price
                                                                                                                                                                              Kit Revision Dump Valve Recirculation Forge
                                                                                                                                                                                  Kit revision pour Dump Valve Forge comprenant: - 1 sachet de graisse - un piston - joints toriques 
                                                                                                                                                                                  €23.50Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €150.77 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €150.77 Price
                                                                                                                                                                                  Bride de turbo Megane N4
                                                                                                                                                                                      Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                                                                                      €150.77Price
                                                                                                                                                                                      Bride de turbo Megane N4
                                                                                                                                                                                          Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                                                                                                          €150.77Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €36.01 Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €36.01 Price
                                                                                                                                                                                          Kit ressorts Dump Valve Forge
                                                                                                                                                                                              Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                                                                                                                                                                              €36.01Price
                                                                                                                                                                                              Kit ressorts Dump Valve Forge
                                                                                                                                                                                                  Kit comprenant plusieurs ressorts pour ajuster vos Dump Valve Ne convient pas pour les références de dump suivantes : FMDVFSIT, FMDVFSITVR et FMDVK04D Kit permettant l'optimisation de votre Dump afin de l'ajuster à vos autres modifications (préparation). Il est composé de 4 ressorts de remplacement. Couleurs des ressorts et pressions correspondantes: Vert 0,3 à 1,03 Bar Jaune 1.03 à 1,53 Bar...
                                                                                                                                                                                                  €36.01Price
                                                                                                                                                                                                  Vis de bielle origine
                                                                                                                                                                                                      Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                                                                                                                                                                                      €8.56Price
                                                                                                                                                                                                      Vis de bielle origine
                                                                                                                                                                                                          Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                                                                                                                                                                                          €8.56Price
                                                                                                                                                                                                          Vis Fixation Volant Moteur
                                                                                                                                                                                                              Secure the transmission of power from your crankshaft to your clutch assembly with this heavy-duty Flywheel Fixing Bolt for the Renault Clio 16S, Williams, Clio 2 RS, and Clio 3 RS . This high-tensile specialist hardware is critical to enduring harsh rev matches and the...
                                                                                                                                                                                                              €5.64Price
                                                                                                                                                                                                              Vis Fixation Volant Moteur
                                                                                                                                                                                                                  Secure the transmission of power from your crankshaft to your clutch assembly with this heavy-duty Flywheel Fixing Bolt for the Renault Clio 16S, Williams, Clio 2 RS, and Clio 3 RS . This high-tensile specialist hardware is critical to enduring harsh rev matches and the...
                                                                                                                                                                                                                  €5.64Price