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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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Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
      Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
      €20.87Price
      Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
          Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
          €20.87Price
          Jeu durites Eau Silicone Forge Clio 2 RSJeu durites Eau Silicone Forge Clio 2 RS
              Jeu de 6 durites Silicone Forge. Ce kit remplace avantageusement les durites d'origines de la voiture car beaucoup plus résistantes. Apporte également un look visuel racing à votre moteur.
              €317.09Price
              Jeu durites Eau Silicone Forge Clio 2 RSJeu durites Eau Silicone Forge Clio 2 RS
                  Jeu de 6 durites Silicone Forge. Ce kit remplace avantageusement les durites d'origines de la voiture car beaucoup plus résistantes. Apporte également un look visuel racing à votre moteur.
                  €317.09Price
                  En Stock
                  €81.65 Price
                  En Stock
                  €81.65 Price
                  Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                      Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                      €81.65Price
                      Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                          Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                          €81.65Price
                          En Stock
                          €66.48 Price
                          En Stock
                          €66.48 Price
                          Coussinets de Vilebrequin Trimetal ergotés ACLCoussinets de Vilebrequin Trimetal ergotés ACL
                              Coussinet de vilebrequin trimetal Coussinets pour F7P, F7R, F4R, F4R soit pour Clio 16S, Williams, clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS Présence d'ergots.
                              €66.48Price
                              Coussinets de Vilebrequin Trimetal ergotés ACLCoussinets de Vilebrequin Trimetal ergotés ACL
                                  Coussinet de vilebrequin trimetal Coussinets pour F7P, F7R, F4R, F4R soit pour Clio 16S, Williams, clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS Présence d'ergots.
                                  €66.48Price
                                  En Stock
                                  €251.47 Price
                                  En Stock
                                  €251.47 Price
                                  Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                      Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                      €251.47Price
                                      Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                          Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                          €251.47Price
                                          En Stock
                                          €279.71 Price
                                          En Stock
                                          €279.71 Price
                                          Kit 11 Durites Silicone Super 5 GT TURBO Ph 2Kit 11 Durites Silicone Super 5 GT TURBO Ph 2
                                              Kit de 11 Durites Silicones pour Super 5 GT Turbo Phase 2 Noir mat afin de rester dans l'esprit d'origine de la voiture Parfait pour une restoration
                                              €279.71Price
                                              Kit 11 Durites Silicone Super 5 GT TURBO Ph 2Kit 11 Durites Silicone Super 5 GT TURBO Ph 2
                                                  Kit de 11 Durites Silicones pour Super 5 GT Turbo Phase 2 Noir mat afin de rester dans l'esprit d'origine de la voiture Parfait pour une restoration
                                                  €279.71Price
                                                  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
                                                          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
                                                                  En Stock
                                                                  €50.86 Price
                                                                  En Stock
                                                                  €50.86 Price
                                                                  Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                      Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                      €50.86Price
                                                                      Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                          Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                          €50.86Price
                                                                          DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                              Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                              €224.09Price
                                                                              DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                  Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                  €224.09Price
                                                                                  Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                                                      Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                                                      €33.94Price
                                                                                      Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                                                          Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                                                          €33.94Price
                                                                                          Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                              Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                              €265.93Price
                                                                                              Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                                  Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                                  €265.93Price
                                                                                                  Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
                                                                                                      Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
                                                                                                      €28.78Price
                                                                                                      Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
                                                                                                          Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
                                                                                                          €28.78Price
                                                                                                          Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                              Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                              €4.72Price
                                                                                                              Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                                  Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                                  €4.72Price
                                                                                                                  En Stock
                                                                                                                  €122.00 Price
                                                                                                                  En Stock
                                                                                                                  €122.00 Price
                                                                                                                  ARP Uprated Rod Bolts | Renault Clio & Megane RS
                                                                                                                      Protect your bottom end assembly against high-RPM failure with this premium Uprated ARP Rod Bolts Kit for Renault Clio 16S, Williams, Clio 2 3 RS, and Megane 2 3 RS , commercialized under the international part number ARP-216-6301 . Forged from premium ARP...
                                                                                                                      €122.00Price
                                                                                                                      ARP Uprated Rod Bolts | Renault Clio & Megane RS
                                                                                                                          Protect your bottom end assembly against high-RPM failure with this premium Uprated ARP Rod Bolts Kit for Renault Clio 16S, Williams, Clio 2 3 RS, and Megane 2 3 RS , commercialized under the international part number ARP-216-6301 . Forged from premium ARP...
                                                                                                                          €122.00Price
                                                                                                                          En Stock
                                                                                                                          €22.74 Price
                                                                                                                          En Stock
                                                                                                                          €22.74 Price
                                                                                                                          Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                                                                              Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                                                                              €22.74Price
                                                                                                                              Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                                                                                  Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                                                                                  €22.74Price
                                                                                                                                  Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                                                                      The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                                                                      €16.92Price
                                                                                                                                      Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                                                                          The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                                                                          €16.92Price
                                                                                                                                          En Stock
                                                                                                                                          €84.00 Price
                                                                                                                                          En Stock
                                                                                                                                          €84.00 Price
                                                                                                                                          Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                                                                                                                              Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                                                                                                                              €84.00Price
                                                                                                                                              Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                                                                                                                                  Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                                                                                                                                  €84.00Price
                                                                                                                                                  Flasque palier ( X2.30 )2.3mm Crankshaft Thrust Washer - Renault Clio RS & Megane RS
                                                                                                                                                      Ensure the longevity of your bottom end with this genuine Renault crankshaft thrust washer pair . Featuring a precise thickness of 2.3 mm , these thrust bearings are essential for controlling crankshaft end play on F7R and F4R engines. A certified OEM part for Clio Williams, Clio 2 RS, Clio 3 RS, and...
                                                                                                                                                      €43.51Price
                                                                                                                                                      Flasque palier ( X2.30 )2.3mm Crankshaft Thrust Washer - Renault Clio RS & Megane RS
                                                                                                                                                          Ensure the longevity of your bottom end with this genuine Renault crankshaft thrust washer pair . Featuring a precise thickness of 2.3 mm , these thrust bearings are essential for controlling crankshaft end play on F7R and F4R engines. A certified OEM part for Clio Williams, Clio 2 RS, Clio 3 RS, and...
                                                                                                                                                          €43.51Price
                                                                                                                                                          Kit Complet Durites D'eau Clio 3 RSKit Complet Durites D'eau Clio 3 RS
                                                                                                                                                              Kit complet de durites d'eau pour Clio 3 RS. Convient à toutes les Clio 3 RS Ce kit vient en lieu et place des durites d'origine et les remplacent avantageusement.
                                                                                                                                                              €445.18Price
                                                                                                                                                              Kit Complet Durites D'eau Clio 3 RSKit Complet Durites D'eau Clio 3 RS
                                                                                                                                                                  Kit complet de durites d'eau pour Clio 3 RS. Convient à toutes les Clio 3 RS Ce kit vient en lieu et place des durites d'origine et les remplacent avantageusement.
                                                                                                                                                                  €445.18Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €81.58 Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €81.58 Price
                                                                                                                                                                  Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                                                                                                                                      Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                                                                                                                                      €81.58Price
                                                                                                                                                                      Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                                                                                                                                          Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                                                                                                                                          €81.58Price
                                                                                                                                                                          Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                                                                                                                                                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                                                                                                                                                              €0.23Price
                                                                                                                                                                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                                                                                                                                                                  Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                                                                                                                                                                  €0.23Price
                                                                                                                                                                                  Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                                                                      Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                                                                      €17.09Price
                                                                                                                                                                                      Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                                                                          Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                                                                          €17.09Price
                                                                                                                                                                                          Durite modine/radiateur Clio 2 Cup
                                                                                                                                                                                              The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                                                                                                                              €77.62Price
                                                                                                                                                                                              Durite modine/radiateur Clio 2 Cup
                                                                                                                                                                                                  The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                                                                                                                                  €77.62Price
                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                  €133.39 Price
                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                  €133.39 Price
                                                                                                                                                                                                  Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                                                                                                                                                                                                      Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                                                                                      €133.39Price
                                                                                                                                                                                                      Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                                                                                                                                                                                                          Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                                                                                          €133.39Price
                                                                                                                                                                                                          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