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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: Circuit d'air
  • Categories: Préparation intérieure
En Stock
€174.00 Price
En Stock
€174.00 Price
Joint de Culasse renforcé Cometic Megane 3 RS 1.7Joint de Culasse renforcé Cometic Megane 3 RS 1.7
      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.7 mm 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.
      €174.00Price
      Joint de Culasse renforcé Cometic Megane 3 RS 1.7Joint de Culasse renforcé Cometic Megane 3 RS 1.7
          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.7 mm 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.
          €174.00Price
          En Stock
          €37.52 Price
          En Stock
          €37.52 Price
          Raccord 90° de rampe d'injection Clio Gr N
              Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
              €37.52Price
              Raccord 90° de rampe d'injection Clio Gr N
                  Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                  €37.52Price
                  En Stock
                  €59.00 €69.41 Regular price -15% off Price
                  En Stock
                  €59.00 €69.41 Regular price -15% off Price
                  Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                      Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                      €59.00€69.41Regular price-15% offPrice
                      Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                          Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                          €59.00€69.41Regular price-15% offPrice
                          Collection de 48 grains de réglage soupapes Twingo R2 195-205
                              Collection de 48 grains de réglage soupapes Twingo R2 195-205 7711167645
                              €831.29Price
                              Collection de 48 grains de réglage soupapes Twingo R2 195-205
                                  Collection de 48 grains de réglage soupapes Twingo R2 195-205 7711167645
                                  €831.29Price
                                  Joint anti-usure jonction écope divergent Twingo R2
                                      Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                      €8.48Price
                                      Joint anti-usure jonction écope divergent Twingo R2
                                          Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                          €8.48Price
                                          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
                                                          En Stock
                                                          €174.00 Price
                                                          En Stock
                                                          €174.00 Price
                                                          Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm 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.
                                                              €174.00Price
                                                              Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm 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.
                                                                  €174.00Price
                                                                  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
                                                                          Echangeur air/air Megane 3 RS et N4Genuine Renault Air/Air Intercooler for Mégane 3 RS and N4
                                                                              Don't accept any loss of performance for your Mégane 3 RS or Mégane N4 ! This strictly genuine Renault air/air intercooler is the cornerstone for maintaining your engine's power and reliability. Without it, your sports vehicle risks never reaching its full potential, especially in extreme conditions. Find complementary products at the bottom...
                                                                              €493.96Price
                                                                              Echangeur air/air Megane 3 RS et N4Genuine Renault Air/Air Intercooler for Mégane 3 RS and N4
                                                                                  Don't accept any loss of performance for your Mégane 3 RS or Mégane N4 ! This strictly genuine Renault air/air intercooler is the cornerstone for maintaining your engine's power and reliability. Without it, your sports vehicle risks never reaching its full potential, especially in extreme conditions. Find complementary products at the bottom...
                                                                                  €493.96Price
                                                                                  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
                                                                                          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
                                                                                                  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
                                                                                                          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
                                                                                                                  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
                                                                                                                          En Stock
                                                                                                                          €17.45 Price
                                                                                                                          En Stock
                                                                                                                          €17.45 Price
                                                                                                                          Support inférieur écope boitier filtre Twingo R2
                                                                                                                              Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                                                              €17.45Price
                                                                                                                              Support inférieur écope boitier filtre Twingo R2
                                                                                                                                  Support inférieur écope boitier filtre Twingo R2 Référence: 7711167597
                                                                                                                                  €17.45Price
                                                                                                                                  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
                                                                                                                                          Dispo selon configuration
                                                                                                                                          €6.00 Price
                                                                                                                                          Dispo selon configuration
                                                                                                                                          €6.00 Price
                                                                                                                                          Tuyau de dépressionTuyau de dépression
                                                                                                                                              Tuyau de depression de diamètre 4mm. Sert généralement pour l'installation de Dump Valve. Prix au metre
                                                                                                                                              €6.00Price
                                                                                                                                              Tuyau de dépressionTuyau de dépression
                                                                                                                                                  Tuyau de depression de diamètre 4mm. Sert généralement pour l'installation de Dump Valve. Prix au metre
                                                                                                                                                  €6.00Price
                                                                                                                                                  En Stock
                                                                                                                                                  €3.16 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €3.16 Price
                                                                                                                                                  Clip maintien support linguet Twingo R2 195/205
                                                                                                                                                      Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                                                                                                      €3.16Price
                                                                                                                                                      Clip maintien support linguet Twingo R2 195/205
                                                                                                                                                          Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                                                                                                          €3.16Price
                                                                                                                                                          Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                                                                              Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                                                                              €202.56Price
                                                                                                                                                              Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                                                                                  Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                                                                                  €202.56Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €66.99 Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €66.99 Price
                                                                                                                                                                  Injecteur Clio 3 RS et X85 Cup
                                                                                                                                                                      The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                                                      €66.99Price
                                                                                                                                                                      Injecteur Clio 3 RS et X85 Cup
                                                                                                                                                                          The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                                                          €66.99Price
                                                                                                                                                                          Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                                                                                                                                                              Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                                                                                                                                                              €55.88Price
                                                                                                                                                                              Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                                                                                                                                                                  Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                                                                                                                                                                  €55.88Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €70.25 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €70.25 Price
                                                                                                                                                                                  Blue Crankshaft Half-Bearing Set
                                                                                                                                                                                      Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                                                                                                                                      €70.25Price
                                                                                                                                                                                      Blue Crankshaft Half-Bearing Set
                                                                                                                                                                                          Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                                                                                                                                          €70.25Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €1,326.07 Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €1,326.07 Price
                                                                                                                                                                                          AAC Admission loi 286TR2A2 Twingo R2 205
                                                                                                                                                                                              AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                                                                                                                                                                              €1,326.07Price
                                                                                                                                                                                              AAC Admission loi 286TR2A2 Twingo R2 205
                                                                                                                                                                                                  AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                                                                                                                                                                                  €1,326.07Price