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Engine Parts & Tuning Hardware

Unleash Your Engine's Power: Performance Parts & Accessories

At Optimiz Access, we offer a vast lineup of engine performance parts and accessories to boost the output of your sports vehicle or premium automobile. Optimize your engine for extreme performance and enjoy an exhilarating driving experience on both road and track.

Key benefits of engine tuning: substantial horsepower and torque gains for rapid acceleration, sharper throttle response, enhanced mechanical reliability using high-strength components, and tailored custom tuning suited to all engines.

Essential Products to Maximize Engine Performance

Discover all our precision-engineered components designed to increase efficiency and durability in your engine block:

  • Cold Air Intakes & Air Filtration – Performance sports filters and carbon intake systems for maximum air filling.
  • Intercoolers & Charge Coolers – Efficient intake air cooling to sustain consistent power output under heavy loads.
  • Forged Pistons & Connecting Rods – Heavy-duty internal components built to withstand extreme temperatures and boost pressures.
  • Turbos & Superchargers – Forced induction upgrades delivering significant power increases.
  • Ignition & Servicing – Competition spark plugs, high-output ignition coils, and high-performance oil filters.

Industry-Leading Benchmark Brands

We stock top tuning and motorsport manufacturers: Wagner Tuning, Forge Motorsport, Magnecor, Green Filter, BMC Filter, NGK, Vibra Technics, and Powerflex. We also supply OEM factory parts to ensure meticulous engine maintenance.

Why you should Choose Optimiz Access for Your Engine Upgrades

Since 2010, Optimiz Access has specialized in selecting top-tier engine components for the custom upgrading and maintenance of sports vehicles. Located in northern France (Hauts-de-France) — near Lille, Valenciennes, Cambrai, Arras, Seclin, Douai, and Saint-Quentin —, our expert technicians guide your hardware selection and provide professional installation in our workshop. We ensure strict quality control along with fast worldwide shipping.

Unleash Your Engine's Full Potential Today

Give your car the raw power and sharp response it deserves. Trust the expertise of Optimiz Access, select your engine performance parts today, and benefit from our fast dispatch.

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  • Categories: Alimentation
  • Categories: Entretien
  • Categories: Préparation intérieure
Linguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RSLinguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RS
      Linguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RSVéritable produit d'origine
      €90.76Price
      Linguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RSLinguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RS
          Linguet rouleau Clio 2 RS et  Clio 3 RS y compris R3 et X85 Cup et Twingo RSVéritable produit d'origine
          €90.76Price
          En Stock
          €92.35 Price
          En Stock
          €92.35 Price
          Support Pédale Accélérateur Clio 3 X85 Cup
              Support Pédale Accélérateur Clio 3 X85 Cup Référence: 7711160177
              €92.35Price
              Support Pédale Accélérateur Clio 3 X85 Cup
                  Support Pédale Accélérateur Clio 3 X85 Cup Référence: 7711160177
                  €92.35Price
                  Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                      Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                      €89.65Price
                      Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                          Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                          €89.65Price
                          En Stock
                          €10.03 Price
                          En Stock
                          €10.03 Price
                          Bouchon étanchéité aac échappement
                              Camshaft Exhaust End Sealing Plug – Renault The Renault camshaft sealing plug, reference 7700274026 , is an engine component designed to seal an opening in the cylinder head. It helps maintain...
                              €10.03Price
                              Bouchon étanchéité aac échappement
                                  Camshaft Exhaust End Sealing Plug – Renault The Renault camshaft sealing plug, reference 7700274026 , is an engine component designed to seal an opening in the cylinder head. It helps maintain...
                                  €10.03Price
                                  En Stock
                                  €132.37 €161.42 Regular price -18% off Price
                                  En Stock
                                  €132.37 €161.42 Regular price -18% off Price
                                  Kit accessoire Clio 4 RS
                                      Kit accessoire Clio 4 RS Véritable produit d'origine
                                      €132.37€161.42Regular price-18% offPrice
                                      Kit accessoire Clio 4 RS
                                          Kit accessoire Clio 4 RS Véritable produit d'origine
                                          €132.37€161.42Regular price-18% offPrice
                                          Collection de 3 segments pour piston Twingo RS R1 et R2 160
                                              Original RENAULT Piston Ring Set for Twingo 2 RS (for 1 piston) Do not compromise the compression and power of your Twingo 2 RS engine. This original RENAULT piston...
                                              €68.32Price
                                              Collection de 3 segments pour piston Twingo RS R1 et R2 160
                                                  Original RENAULT Piston Ring Set for Twingo 2 RS (for 1 piston) Do not compromise the compression and power of your Twingo 2 RS engine. This original RENAULT piston...
                                                  €68.32Price
                                                  En Stock
                                                  €9.89 Price
                                                  En Stock
                                                  €9.89 Price
                                                  Plot Caoutchouc cache supérieur moteur Megane RS
                                                      Plot Caoutchouc cache supérieur moteur Véritable produit d'origine pour Megane 2 RS et Megane 3 RS
                                                      €9.89Price
                                                      Plot Caoutchouc cache supérieur moteur Megane RS
                                                          Plot Caoutchouc cache supérieur moteur Véritable produit d'origine pour Megane 2 RS et Megane 3 RS
                                                          €9.89Price
                                                          Câble accélérateur Clio 3 X85 Cup
                                                              Don't let a seized cable compromise your responsiveness on the track. This official Renault Sport throttle cable is specifically designed for the Renault Clio 3 X85 Cup . Genuine manufacturer part (Reference 7711160160). High-resistance design for intensive competition ...
                                                              €52.69Price
                                                              Câble accélérateur Clio 3 X85 Cup
                                                                  Don't let a seized cable compromise your responsiveness on the track. This official Renault Sport throttle cable is specifically designed for the Renault Clio 3 X85 Cup . Genuine manufacturer part (Reference 7711160160). High-resistance design for intensive competition ...
                                                                  €52.69Price
                                                                  Vis de fixation de poulie de vilebrequin (damper) Clio 2 RS
                                                                      Vis de fixation de poulie de vilebrequin (damper) Clio 2 RS
                                                                      €20.00Price
                                                                      Vis de fixation de poulie de vilebrequin (damper) Clio 2 RS
                                                                          Vis de fixation de poulie de vilebrequin (damper) Clio 2 RS
                                                                          €20.00Price
                                                                          En Stock
                                                                          €546.20 Price
                                                                          En Stock
                                                                          €546.20 Price
                                                                          Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                              Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                              €546.20Price
                                                                              Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                  Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                  €546.20Price
                                                                                  En Stock
                                                                                  €119.28 Price
                                                                                  En Stock
                                                                                  €119.28 Price
                                                                                  Capteur pédale accélérateur Clio 3 RS
                                                                                      Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                                                                      €119.28Price
                                                                                      Capteur pédale accélérateur Clio 3 RS
                                                                                          Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                                                                          €119.28Price
                                                                                          Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                              Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                              €33.55Price
                                                                                              Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                  Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                  €33.55Price
                                                                                                  Sonde pression Twingo R2New Genuine Renault Sport Oil Pressure Sensor - Clio R3 & Twingo R2
                                                                                                      This new oil pressure sensor , from the Renault Sport competition catalog , is a vital safety part for the rally engines of the Renault Clio R3 and Twingo R2 . It is essential for monitoring lubrication and thereby preventing catastrophic engine failures caused by a lack or drop in oil pressure.
                                                                                                      €195.78Price
                                                                                                      Sonde pression Twingo R2New Genuine Renault Sport Oil Pressure Sensor - Clio R3 & Twingo R2
                                                                                                          This new oil pressure sensor , from the Renault Sport competition catalog , is a vital safety part for the rally engines of the Renault Clio R3 and Twingo R2 . It is essential for monitoring lubrication and thereby preventing catastrophic engine failures caused by a lack or drop in oil pressure.
                                                                                                          €195.78Price
                                                                                                          Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                              Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                              €173.57Price
                                                                                                              Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                                  Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                                  €173.57Price
                                                                                                                  En Stock
                                                                                                                  €27.31 Price
                                                                                                                  En Stock
                                                                                                                  €27.31 Price
                                                                                                                  Joint Spy Vilebrequin Twingo RS y compris R1 et  R2
                                                                                                                      Joint Spy Vilebrequin Twingo RS y compris R1 et R2 Référence: 770086072
                                                                                                                      €27.31Price
                                                                                                                      Joint Spy Vilebrequin Twingo RS y compris R1 et  R2
                                                                                                                          Joint Spy Vilebrequin Twingo RS y compris R1 et R2 Référence: 770086072
                                                                                                                          €27.31Price
                                                                                                                          Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                                              Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                                              €217.02Price
                                                                                                                              Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                                                  Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                                                  €217.02Price
                                                                                                                                  Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                                                                                                                      Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                                                                                                                      €146.16Price
                                                                                                                                      Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                                                                                                                          Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                                                                                                                          €146.16Price
                                                                                                                                          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
                                                                                                                                                  Interrupteur coup de poing Megane N4
                                                                                                                                                      Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                                                                                      €20.30Price
                                                                                                                                                      Interrupteur coup de poing Megane N4
                                                                                                                                                          Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                                                                                          €20.30Price
                                                                                                                                                          Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                                              Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                                              €37.90Price
                                                                                                                                                              Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                                                  Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                                                  €37.90Price
                                                                                                                                                                  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
                                                                                                                                                                          Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                              The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                                                                                                                                              €35.80Price
                                                                                                                                                                              Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                  The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                                                                                                                                                  €35.80Price
                                                                                                                                                                                  Valve pression carter PCV Clio 4 RSGenuine Renault PCV Valve - Clio 4 RS / Mégane 4 RS & GT 205
                                                                                                                                                                                      Don't let a poorly managed crankcase pressure impact the health of your engine! Get the genuine Renault PCV Valve (Crankcase Pressure Valve) , an essential part for the Renault Clio 4 RS , Mégane 4 RS , or Mégane 4 GT 205 . A faulty valve leads to oil leaks and loss of...
                                                                                                                                                                                      €66.43Price
                                                                                                                                                                                      Valve pression carter PCV Clio 4 RSGenuine Renault PCV Valve - Clio 4 RS / Mégane 4 RS & GT 205
                                                                                                                                                                                          Don't let a poorly managed crankcase pressure impact the health of your engine! Get the genuine Renault PCV Valve (Crankcase Pressure Valve) , an essential part for the Renault Clio 4 RS , Mégane 4 RS , or Mégane 4 GT 205 . A faulty valve leads to oil leaks and loss of...
                                                                                                                                                                                          €66.43Price
                                                                                                                                                                                          Kit joints spy et ecrous poulies arbre à cames Megane 2 RS
                                                                                                                                                                                              Kit joints spy et ecrous poulies arbre à cames Megane 2 RS Véritable produit d'origine
                                                                                                                                                                                              €49.33Price
                                                                                                                                                                                              Kit joints spy et ecrous poulies arbre à cames Megane 2 RS
                                                                                                                                                                                                  Kit joints spy et ecrous poulies arbre à cames Megane 2 RS Véritable produit d'origine
                                                                                                                                                                                                  €49.33Price
                                                                                                                                                                                                  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
                                                                                                                                                                                                          €486.55 Price
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €486.55 Price
                                                                                                                                                                                                          Collecteur admission Clio 2 X65 Cup et Gr N
                                                                                                                                                                                                              Collecteur admission Clio 2 X65 Cup et Gr N Prévu pour papillon mécanique
                                                                                                                                                                                                              €486.55Price
                                                                                                                                                                                                              Collecteur admission Clio 2 X65 Cup et Gr N
                                                                                                                                                                                                                  Collecteur admission Clio 2 X65 Cup et Gr N Prévu pour papillon mécanique
                                                                                                                                                                                                                  €486.55Price
                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                  €69.56 Price
                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                  €69.56 Price
                                                                                                                                                                                                                  Flexible à carburant Té / rampe Clio 3 Cup
                                                                                                                                                                                                                      Do not risk a fuel system failure mid-session. The Goodridge Tee to fuel rail hose is crucial for the reliability of your Clio 3 x85 Cup . Keeping a worn or inadequate hose directly exposes your engine to critical fuel starvation or severe leak risks. Permanently secure your injection system with this high-precision...
                                                                                                                                                                                                                      €69.56Price
                                                                                                                                                                                                                      Flexible à carburant Té / rampe Clio 3 Cup
                                                                                                                                                                                                                          Do not risk a fuel system failure mid-session. The Goodridge Tee to fuel rail hose is crucial for the reliability of your Clio 3 x85 Cup . Keeping a worn or inadequate hose directly exposes your engine to critical fuel starvation or severe leak risks. Permanently secure your injection system with this high-precision...
                                                                                                                                                                                                                          €69.56Price
                                                                                                                                                                                                                          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
                                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                                  €13.37 Price
                                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                                  €13.37 Price
                                                                                                                                                                                                                                  Joint Plenum Clio 2 RS
                                                                                                                                                                                                                                      Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                                                                                                                                                                      €13.37Price
                                                                                                                                                                                                                                      Joint Plenum Clio 2 RS
                                                                                                                                                                                                                                          Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                                                                                                                                                                          €13.37Price
                                                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                                                          €116.83 Price
                                                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                                                          €116.83 Price
                                                                                                                                                                                                                                          Jeu de segments pour piston origine Megane 3 RS
                                                                                                                                                                                                                                              Jeu de segments pour piston origine Megane 3 RS 1 Jeu comprend le necessaire pour 1 piston
                                                                                                                                                                                                                                              €116.83Price
                                                                                                                                                                                                                                              Jeu de segments pour piston origine Megane 3 RS
                                                                                                                                                                                                                                                  Jeu de segments pour piston origine Megane 3 RS 1 Jeu comprend le necessaire pour 1 piston
                                                                                                                                                                                                                                                  €116.83Price
                                                                                                                                                                                                                                                  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