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Engine Parts & Tuning Hardware

Unleash Your Engine's Power: Performance Parts & Accessories

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

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

Essential Products to Maximize Engine Performance

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

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

Industry-Leading Benchmark Brands

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

Why you should Choose Optimiz Access for Your Engine Upgrades

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

Unleash Your Engine's Full Potential Today

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

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  • Categories: Kit Allègement
  • Categories: Préparation intérieure
  • Categories: Refroidissement
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
          €199.00 Price
          En Stock
          €199.00 Price
          Kit suppression de direction assistéeKit suppression de direction assistée
              Kit suppression de direction assistée comprenant la poulie folle et son support.
              €199.00Price
              Kit suppression de direction assistéeKit suppression de direction assistée
                  Kit suppression de direction assistée comprenant la poulie folle et son support.
                  €199.00Price
                  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
                          En Stock
                          €5.63 Price
                          En Stock
                          €5.63 Price
                          Joint de queue de soupape
                              Joint de queue de soupape Attention pour Megane 3 RS les joints sont différents entre admission et échappement Vendu à l'unité
                              €5.63Price
                              Joint de queue de soupape
                                  Joint de queue de soupape Attention pour Megane 3 RS les joints sont différents entre admission et échappement Vendu à l'unité
                                  €5.63Price
                                  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
                                          En Stock
                                          €5.66 Price
                                          En Stock
                                          €5.66 Price
                                          Vis de fixation galet enrouleur de distribution K4MVis de fixation galet enrouleur de distribution K4M
                                              Vis de fixation galet enrouleur de distribution K4M 8200581340
                                              €5.66Price
                                              Vis de fixation galet enrouleur de distribution K4MVis de fixation galet enrouleur de distribution K4M
                                                  Vis de fixation galet enrouleur de distribution K4M 8200581340
                                                  €5.66Price
                                                  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
                                                          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
                                                                  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
                                                                          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
                                                                                  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
                                                                                          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
                                                                                                  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
                                                                                                          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
                                                                                                                  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
                                                                                                                          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
                                                                                                                                  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
                                                                                                                                                                  €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
                                                                                                                                                                                          €13.57 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €13.57 Price
                                                                                                                                                                                              Buse de diffusion 0.5mm Clio 4 X98 Cup et R3T Référence: 8201489621
                                                                                                                                                                                              €13.57Price
                                                                                                                                                                                                  Buse de diffusion 0.5mm Clio 4 X98 Cup et R3T Référence: 8201489621
                                                                                                                                                                                                  €13.57Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €12.71 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €12.71 Price
                                                                                                                                                                                                      Porte filtre 200μ Clio 4 X98 R3T et Cup Référence: 8201489625
                                                                                                                                                                                                      €12.71Price
                                                                                                                                                                                                          Porte filtre 200μ Clio 4 X98 R3T et Cup Référence: 8201489625
                                                                                                                                                                                                          €12.71Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €319.00 Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €319.00 Price
                                                                                                                                                                                                          Mechanical A/C Delete Kit Renault Clio 4 RS / Mégane 4 RS / Alpine A110Mechanical A/C Delete Kit Renault Clio 4 RS / Mégane 4 RS / Alpine A110
                                                                                                                                                                                                              The Optimiz Access Mechanical A/C Delete Kit is the essential core component for lightening your sports vehicle. Designed specifically for the Renault Clio 4 RS , Renault Mégane 4 RS , and the Alpine A110 , this kit allows you to replace the A/C compressor with a high-quality fixed...
                                                                                                                                                                                                              €319.00Price
                                                                                                                                                                                                              Mechanical A/C Delete Kit Renault Clio 4 RS / Mégane 4 RS / Alpine A110Mechanical A/C Delete Kit Renault Clio 4 RS / Mégane 4 RS / Alpine A110
                                                                                                                                                                                                                  The Optimiz Access Mechanical A/C Delete Kit is the essential core component for lightening your sports vehicle. Designed specifically for the Renault Clio 4 RS , Renault Mégane 4 RS , and the Alpine A110 , this kit allows you to replace the A/C compressor with a high-quality fixed...
                                                                                                                                                                                                                  €319.00Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €384.00 Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €384.00 Price
                                                                                                                                                                                                                  Kit Suppression de Clim Clio 3 RS - Megane 2 RS -  Megane 3 RSAC Delete Kit with Freewheel Pulley for Renault Clio 3 RS, Megane 2 RS, and Megane 3 RS
                                                                                                                                                                                                                      Enhance the power-to-weight ratio of your Renault Clio 3 RS, Megane 2 RS, or Megane 3 RS with our complete AC delete kit. Replace the AC compressor with a smooth-running freewheel pulley, and enjoy noticeable weight reduction and improved engine responsiveness. Includes all necessary components, including the accessory belt.
                                                                                                                                                                                                                      €384.00Price
                                                                                                                                                                                                                      Kit Suppression de Clim Clio 3 RS - Megane 2 RS -  Megane 3 RSAC Delete Kit with Freewheel Pulley for Renault Clio 3 RS, Megane 2 RS, and Megane 3 RS
                                                                                                                                                                                                                          Enhance the power-to-weight ratio of your Renault Clio 3 RS, Megane 2 RS, or Megane 3 RS with our complete AC delete kit. Replace the AC compressor with a smooth-running freewheel pulley, and enjoy noticeable weight reduction and improved engine responsiveness. Includes all necessary components, including the accessory belt.
                                                                                                                                                                                                                          €384.00Price
                                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                                          €393.47 Price
                                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                                          €393.47 Price
                                                                                                                                                                                                                          Kit Suppression Clim Clio 2 RS
                                                                                                                                                                                                                              Optimize the weight and performance of your Renault Clio 2 RS with this AC delete kit. Designed to eliminate the AC compressor while retaining the alternator belt tension system, it offers significant weight savings and improved responsiveness.
                                                                                                                                                                                                                              €393.47Price
                                                                                                                                                                                                                              Kit Suppression Clim Clio 2 RS
                                                                                                                                                                                                                                  Optimize the weight and performance of your Renault Clio 2 RS with this AC delete kit. Designed to eliminate the AC compressor while retaining the alternator belt tension system, it offers significant weight savings and improved responsiveness.
                                                                                                                                                                                                                                  €393.47Price
                                                                                                                                                                                                                                  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