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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: Préparation intérieure
Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
      Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
      €41.95Price
      Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
          Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
          €41.95Price
          En Stock
          €139.14 Price
          En Stock
          €139.14 Price
          Piston équipé C (X82.70) Clio 3 RS
              The Renault complete piston (index C) is an original part, supplied with pin and pin clips, designed for your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal engine performance and increased reliability.
              €139.14Price
              Piston équipé C (X82.70) Clio 3 RS
                  The Renault complete piston (index C) is an original part, supplied with pin and pin clips, designed for your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal engine performance and increased reliability.
                  €139.14Price
                  RENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hpRENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hp
                      Optimize the performance of your Renault Twingo R2 EVO 195hp with this genuine RENAULT SPORT assembled cylinder head (ref. 7711167644). Supplied with valves, retainers, valve springs, rocker arms, and pushrods, this cylinder head is ready to be installed (camshafts not included). Guaranteed performance and reliability.
                      €8,104.62Price
                      RENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hpRENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hp
                          Optimize the performance of your Renault Twingo R2 EVO 195hp with this genuine RENAULT SPORT assembled cylinder head (ref. 7711167644). Supplied with valves, retainers, valve springs, rocker arms, and pushrods, this cylinder head is ready to be installed (camshafts not included). Guaranteed performance and reliability.
                          €8,104.62Price
                          Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)
                              Mechanical throttle potentiometer, identical to the original, compatible with Renault Clio 2 RS, Clio 2 Rally, Clio 2 Gr N, and Clio 2 X65 Cup. Optimal performance and precision for your vehicle.
                              €67.50Price
                              Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)
                                  Mechanical throttle potentiometer, identical to the original, compatible with Renault Clio 2 RS, Clio 2 Rally, Clio 2 Gr N, and Clio 2 X65 Cup. Optimal performance and precision for your vehicle.
                                  €67.50Price
                                  Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                      Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                      €33.55Price
                                      Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                          Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                          €33.55Price
                                          En Stock
                                          €55.68 Price
                                          En Stock
                                          €55.68 Price
                                          Tuyau 200-06 lg:300 connection rampe Tatuus
                                              Tuyau 200-06 lg:300 connection rampe Tatuus Réference: 7711155525
                                              €55.68Price
                                              Tuyau 200-06 lg:300 connection rampe Tatuus
                                                  Tuyau 200-06 lg:300 connection rampe Tatuus Réference: 7711155525
                                                  €55.68Price
                                                  En Stock
                                                  €133.56 Price
                                                  En Stock
                                                  €133.56 Price
                                                  Piston équipé indice B (X82.70) Clio 3 RS et X85 Cup
                                                      Piston équipé indice B (X=82.70) Clio 3 RS et X85 Cup Piston d'origine
                                                      €133.56Price
                                                      Piston équipé indice B (X82.70) Clio 3 RS et X85 Cup
                                                          Piston équipé indice B (X=82.70) Clio 3 RS et X85 Cup Piston d'origine
                                                          €133.56Price
                                                          Sur commande ou en cours de réappro
                                                          €28.99 Price
                                                          Sur commande ou en cours de réappro
                                                          €28.99 Price
                                                              Do not risk a devastating thermal meltdown or valve breakage in your top end during track days or rally stages. This genuine MPI forged exhaust valve , sold individually and designed for a direct plug-and-play replacement, protects your Renault Clio Williams cylinder head from extreme combustion temperatures. Unlike factory-cast valves that oxidize and weaken...
                                                              €28.99Price
                                                                  Do not risk a devastating thermal meltdown or valve breakage in your top end during track days or rally stages. This genuine MPI forged exhaust valve , sold individually and designed for a direct plug-and-play replacement, protects your Renault Clio Williams cylinder head from extreme combustion temperatures. Unlike factory-cast valves that oxidize and weaken...
                                                                  €28.99Price
                                                                  Sur commande ou en cours de réappro
                                                                  €28.99 Price
                                                                  Sur commande ou en cours de réappro
                                                                  €28.99 Price
                                                                      Do not risk a catastrophic engine failure on your F7R block during high-RPM driving. This genuine MPI forged intake valve , sold individually and designed for a direct drop-in replacement, is the essential safety component to protect the top end of your Renault Clio Williams . Unlike factory-cast valves that eventually fatigue under extreme thermal stress and...
                                                                      €28.99Price
                                                                          Do not risk a catastrophic engine failure on your F7R block during high-RPM driving. This genuine MPI forged intake valve , sold individually and designed for a direct drop-in replacement, is the essential safety component to protect the top end of your Renault Clio Williams . Unlike factory-cast valves that eventually fatigue under extreme thermal stress and...
                                                                          €28.99Price
                                                                          Sur commande ou en cours de réappro
                                                                          €324.60 Price
                                                                          Sur commande ou en cours de réappro
                                                                          €324.60 Price
                                                                              Do not risk a drastic loss of compression or excessive oil consumption during your next stage. This official Renault Sport piston ring set (designed for one piston) is the only genuine solution calibrated to maintain absolute sealing in your Clio R3 MAX engine. ...
                                                                              €324.60Price
                                                                                  Do not risk a drastic loss of compression or excessive oil consumption during your next stage. This official Renault Sport piston ring set (designed for one piston) is the only genuine solution calibrated to maintain absolute sealing in your Clio R3 MAX engine. ...
                                                                                  €324.60Price
                                                                                  Sur commande ou en cours de réappro
                                                                                  €678.06 Price
                                                                                  Sur commande ou en cours de réappro
                                                                                  €678.06 Price
                                                                                      Do not risk a drop in compression or a major engine failure mid-stage. This official Renault Sport piston , supplied complete with its pin, is the only genuine component calibrated to restore the original performance of your Clio R3 MAX . Specifically...
                                                                                      €678.06Price
                                                                                          Do not risk a drop in compression or a major engine failure mid-stage. This official Renault Sport piston , supplied complete with its pin, is the only genuine component calibrated to restore the original performance of your Clio R3 MAX . Specifically...
                                                                                          €678.06Price
                                                                                          Sur commande ou en cours de réappro
                                                                                          €407.03 Price
                                                                                          Sur commande ou en cours de réappro
                                                                                          €407.03 Price
                                                                                          New Genuine Renault Starter Motor - Clio 4 RS (All Phases)
                                                                                              Ensure an instantaneous start for your Renault Clio 4 RS (all phases) with this brand-new genuine Renault starter motor . Unlike remanufactured units, this 100% new product guarantees maximum reliability and increased longevity for your 1.6 Turbo engine. Don't risk an immobilizing breakdown—choose manufacturer...
                                                                                              €407.03Price
                                                                                              New Genuine Renault Starter Motor - Clio 4 RS (All Phases)
                                                                                                  Ensure an instantaneous start for your Renault Clio 4 RS (all phases) with this brand-new genuine Renault starter motor . Unlike remanufactured units, this 100% new product guarantees maximum reliability and increased longevity for your 1.6 Turbo engine. Don't risk an immobilizing breakdown—choose manufacturer...
                                                                                                  €407.03Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €77.12 Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €77.12 Price
                                                                                                  Power Distribution Box & Starter Fuse Renault Megane 3 RSPower Distribution Box & Starter Fuse Renault Megane 3 RS
                                                                                                      Do not let a minor electrical failure lead to a major breakdown. This genuine Renault power distribution box is a critical component of your Renault Megane 3 RS starting circuit. Integrating essential high-power fuses , specifically for the starter motor and alternator protection, it ensures secure energy management from your...
                                                                                                      €77.12Price
                                                                                                      Power Distribution Box & Starter Fuse Renault Megane 3 RSPower Distribution Box & Starter Fuse Renault Megane 3 RS
                                                                                                          Do not let a minor electrical failure lead to a major breakdown. This genuine Renault power distribution box is a critical component of your Renault Megane 3 RS starting circuit. Integrating essential high-power fuses , specifically for the starter motor and alternator protection, it ensures secure energy management from your...
                                                                                                          €77.12Price
                                                                                                          Sur commande ou en cours de réappro
                                                                                                          €188.74 Price
                                                                                                          Sur commande ou en cours de réappro
                                                                                                          €188.74 Price
                                                                                                          Jauge pompe Clio 2 RS 1
                                                                                                              Jauge pompe Clio 2 RS 1 Modele spécifique ayant le régulateur sur la pompe
                                                                                                              €188.74Price
                                                                                                              Jauge pompe Clio 2 RS 1
                                                                                                                  Jauge pompe Clio 2 RS 1 Modele spécifique ayant le régulateur sur la pompe
                                                                                                                  €188.74Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €272.90 Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €272.90 Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €53.36 Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €53.36 Price
                                                                                                                  Soupape échappement Inconel Megane 3 RSHigh-Performance Inconel Exhaust Valve for Renault Megane 3 RS
                                                                                                                      Don't compromise on the performance and reliability of your Renault Megane 3 RS ! Our Inconel exhaust valve , designed as a direct replacement for the original, is crucial for preserving your engine's integrity under extreme stress. An essential investment for the durability and power of your sports vehicle.
                                                                                                                      €53.36Price
                                                                                                                      Soupape échappement Inconel Megane 3 RSHigh-Performance Inconel Exhaust Valve for Renault Megane 3 RS
                                                                                                                          Don't compromise on the performance and reliability of your Renault Megane 3 RS ! Our Inconel exhaust valve , designed as a direct replacement for the original, is crucial for preserving your engine's integrity under extreme stress. An essential investment for the durability and power of your sports vehicle.
                                                                                                                          €53.36Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €3.49 Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €3.49 Price
                                                                                                                          Bouchon obturateur cylindre coté embrayage Clio 2 RSBouchon obturateur cylindre coté embrayage Clio 2 RS
                                                                                                                              Bouchon obturateur cylindre coté embrayage Clio 2 RS
                                                                                                                              €3.49Price
                                                                                                                              Bouchon obturateur cylindre coté embrayage Clio 2 RSBouchon obturateur cylindre coté embrayage Clio 2 RS
                                                                                                                                  Bouchon obturateur cylindre coté embrayage Clio 2 RS
                                                                                                                                  €3.49Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €79.54 Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €79.54 Price
                                                                                                                                      Couvercle boitier sortie d'eau (calorstat) Clio 2 RS
                                                                                                                                      €79.54Price
                                                                                                                                          Couvercle boitier sortie d'eau (calorstat) Clio 2 RS
                                                                                                                                          €79.54Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €24.00 Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €24.00 Price
                                                                                                                                              Tuyau nitrile GOODRIDGE DASH 6 (le m) Le...
                                                                                                                                              €24.00Price
                                                                                                                                                  Tuyau nitrile GOODRIDGE DASH 6 (le m) Le...
                                                                                                                                                  €24.00Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €160.52 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €160.52 Price
                                                                                                                                                  Flexible à carburant Réservoir / Té Clio 3 CupFlexible à carburant Réservoir / Té Clio 3 Cup
                                                                                                                                                      Flexible à carburant Réservoir / Té Clio 3 Cup Référence: 7711162421
                                                                                                                                                      €160.52Price
                                                                                                                                                      Flexible à carburant Réservoir / Té Clio 3 CupFlexible à carburant Réservoir / Té Clio 3 Cup
                                                                                                                                                          Flexible à carburant Réservoir / Té Clio 3 Cup Référence: 7711162421
                                                                                                                                                          €160.52Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €24.00 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €24.00 Price
                                                                                                                                                          Ressort de pompe à huile Clio 1 Gr NRessort de pompe à huile Clio 1 Gr N
                                                                                                                                                              Véritable ressort de pompe à Huile de Clio Gr N. Fournisseur d'époque Convient à la Clio 16S, Clio Williams, 19 16S, Spider, Megane Coupé 2L 16s F7R
                                                                                                                                                              €24.00Price
                                                                                                                                                              Ressort de pompe à huile Clio 1 Gr NRessort de pompe à huile Clio 1 Gr N
                                                                                                                                                                  Véritable ressort de pompe à Huile de Clio Gr N. Fournisseur d'époque Convient à la Clio 16S, Clio Williams, 19 16S, Spider, Megane Coupé 2L 16s F7R
                                                                                                                                                                  €24.00Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €161.10 Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €161.10 Price
                                                                                                                                                                  Joint de Culasse renforcé Cometic Megane 3 RS 2.18Joint de Culasse renforcé Cometic Megane 3 RS 2.18
                                                                                                                                                                      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 2.18 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alésages et épaisseur disponibles, nous contacter.
                                                                                                                                                                      €161.10Price
                                                                                                                                                                      Joint de Culasse renforcé Cometic Megane 3 RS 2.18Joint de Culasse renforcé Cometic Megane 3 RS 2.18
                                                                                                                                                                          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 2.18 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alésages et épaisseur disponibles, nous contacter.
                                                                                                                                                                          €161.10Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €69.52 Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €69.52 Price
                                                                                                                                                                          Joint de culasse Twingo RS y compris R1 et R2
                                                                                                                                                                              Joint de culasse Twingo RS y compris R1 et R2 Référence: 8200356346
                                                                                                                                                                              €69.52Price
                                                                                                                                                                              Joint de culasse Twingo RS y compris R1 et R2
                                                                                                                                                                                  Joint de culasse Twingo RS y compris R1 et R2 Référence: 8200356346
                                                                                                                                                                                  €69.52Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €200.75 Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €200.75 Price
                                                                                                                                                                                      Kit de Coupelles renforcées pour soupapes Produit pour Clio 2 RS Produit de la célèbre marque CATCAMS
                                                                                                                                                                                      €200.75Price
                                                                                                                                                                                          Kit de Coupelles renforcées pour soupapes Produit pour Clio 2 RS Produit de la célèbre marque CATCAMS
                                                                                                                                                                                          €200.75Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €131.69 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €131.69 Price
                                                                                                                                                                                              Coussinets de Bielles Trimetal Twingo 2 RS
                                                                                                                                                                                              €131.69Price
                                                                                                                                                                                                  Coussinets de Bielles Trimetal Twingo 2 RS
                                                                                                                                                                                                  €131.69Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €95.00 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €95.00 Price
                                                                                                                                                                                                  Pompe à essence gros Debit Clio 2 RSPompe à essence gros Debit Clio 2 RS
                                                                                                                                                                                                      Pompe à essence gros Debit Clio 2 RS Pression max: 8 bars Débit: 287L/H
                                                                                                                                                                                                      €95.00Price
                                                                                                                                                                                                      Pompe à essence gros Debit Clio 2 RSPompe à essence gros Debit Clio 2 RS
                                                                                                                                                                                                          Pompe à essence gros Debit Clio 2 RS Pression max: 8 bars Débit: 287L/H
                                                                                                                                                                                                          €95.00Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €133.39 Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €133.39 Price
                                                                                                                                                                                                          Joint de Culasse renforcé Cometic Megane 2 RS 1.3mm
                                                                                                                                                                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.3 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alésages et épaisseur disponibles, nous contacter.
                                                                                                                                                                                                              €133.39Price
                                                                                                                                                                                                              Joint de Culasse renforcé Cometic Megane 2 RS 1.3mm
                                                                                                                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.3 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alésages et épaisseur disponibles, nous contacter.
                                                                                                                                                                                                                  €133.39Price