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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: Circuit d'eau
  • Categories: Entretien
  • Categories: Kit Allègement
  • Categories: Préparation intérieure
En Stock
€31.01 Price
En Stock
€31.01 Price
      Kit colliers pour kit durites d'eau Forge Clio 2 RS
      €31.01Price
          Kit colliers pour kit durites d'eau Forge Clio 2 RS
          €31.01Price
          En Stock
          €243.60 Price
          En Stock
          €243.60 Price
          Radiateur d'eau
              Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
              €243.60Price
              Radiateur d'eau
                  Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                  €243.60Price
                  En Stock
                  €1.00 Price
                  En Stock
                  €1.00 Price
                  Collier serrage inox (durite) diametre 8-12mm
                      Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                      €1.00Price
                      Collier serrage inox (durite) diametre 8-12mm
                          Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                          €1.00Price
                          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
                                  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
                                          €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
                                                  €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
                                                          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
                                                                  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
                                                                          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
                                                                                  €1.00 Price
                                                                                  En Stock
                                                                                  €1.00 Price
                                                                                  Collier serrage inox (durite) diametre 12-20mm
                                                                                      Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                      €1.00Price
                                                                                      Collier serrage inox (durite) diametre 12-20mm
                                                                                          Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                          €1.00Price
                                                                                          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
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €24.71 Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €24.71 Price
                                                                                                  Genuine NISSAN Oil Filter for NISSAN GTR R35Genuine NISSAN Oil Filter for NISSAN GTR R35
                                                                                                      Do not compromise the lubrication of your VR38DETT engine. This genuine Nissan oil filter is the only component certified by the manufacturer to ensure constant oil pressure and optimal filtration of impurities. Essential for every engine oil change , it preserves the longevity of your Nissan GTR R35 , whether for daily...
                                                                                                      €24.71Price
                                                                                                      Genuine NISSAN Oil Filter for NISSAN GTR R35Genuine NISSAN Oil Filter for NISSAN GTR R35
                                                                                                          Do not compromise the lubrication of your VR38DETT engine. This genuine Nissan oil filter is the only component certified by the manufacturer to ensure constant oil pressure and optimal filtration of impurities. Essential for every engine oil change , it preserves the longevity of your Nissan GTR R35 , whether for daily...
                                                                                                          €24.71Price
                                                                                                          Sur commande ou en cours de réappro
                                                                                                          €8.24 €20.59 Regular price -60% off Price
                                                                                                          Sur commande ou en cours de réappro
                                                                                                          €8.24 €20.59 Regular price -60% off Price
                                                                                                          16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS
                                                                                                              Do not risk a costly engine failure during your next track day. This 16mm diameter core plug is an essential engine safety component for all Renault Sport F4R blocks. Whether for the timing side or the left of the oil filter , this engine block expansion plug ensures a perfect seal and prevents coolant leaks under high...
                                                                                                              €8.24€20.59Regular price-60% offPrice
                                                                                                              16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS
                                                                                                                  Do not risk a costly engine failure during your next track day. This 16mm diameter core plug is an essential engine safety component for all Renault Sport F4R blocks. Whether for the timing side or the left of the oil filter , this engine block expansion plug ensures a perfect seal and prevents coolant leaks under high...
                                                                                                                  €8.24€20.59Regular price-60% offPrice
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €74.52 Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €74.52 Price
                                                                                                                  Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)
                                                                                                                      Do not risk the destruction of your F4R engine ! This Additional Timing Belt Protection Plate is essential for the Renault Clio 3 RS , Mégane 2 RS , and Mégane 3 RS . It offers crucial mechanical safety , protecting the timing belt from...
                                                                                                                      €74.52Price
                                                                                                                      Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)
                                                                                                                          Do not risk the destruction of your F4R engine ! This Additional Timing Belt Protection Plate is essential for the Renault Clio 3 RS , Mégane 2 RS , and Mégane 3 RS . It offers crucial mechanical safety , protecting the timing belt from...
                                                                                                                          €74.52Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €79.00 Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €79.00 Price
                                                                                                                          Additional Timing Belt Protection Plate - Clio 2 RS (F4R)Additional Timing Belt Protection Plate - Clio 2 RS (F4R)
                                                                                                                              Do not take the risk of a devastating engine failure ! This Additional Timing Belt Protection Plate is the essential element to secure the timing belt of your Renault Clio 2 RS (F4R engine). It provides vital protection against stone chips and debris, including...
                                                                                                                              €79.00Price
                                                                                                                              Additional Timing Belt Protection Plate - Clio 2 RS (F4R)Additional Timing Belt Protection Plate - Clio 2 RS (F4R)
                                                                                                                                  Do not take the risk of a devastating engine failure ! This Additional Timing Belt Protection Plate is the essential element to secure the timing belt of your Renault Clio 2 RS (F4R engine). It provides vital protection against stone chips and debris, including...
                                                                                                                                  €79.00Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €35.10 Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €35.10 Price
                                                                                                                                  Genuine Renault Engine Oil Filler Cap for Clio 2/3 RS, Twingo 2 RS
                                                                                                                                      Preserve the performance of your Renault Clio 2 RS , Renault Clio 3 RS , or Renault Twingo 2 RS with this genuine RENAULT engine oil filler cap . An essential part to maintain the tightness and cleanliness of your engine. Find complementary products for the maintenance of your sports car at the bottom of the page.
                                                                                                                                      €35.10Price
                                                                                                                                      Genuine Renault Engine Oil Filler Cap for Clio 2/3 RS, Twingo 2 RS
                                                                                                                                          Preserve the performance of your Renault Clio 2 RS , Renault Clio 3 RS , or Renault Twingo 2 RS with this genuine RENAULT engine oil filler cap . An essential part to maintain the tightness and cleanliness of your engine. Find complementary products for the maintenance of your sports car at the bottom of the page.
                                                                                                                                          €35.10Price
                                                                                                                                          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
                                                                                                                                                  €210.52 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €210.52 Price
                                                                                                                                                  Simple data acquisition telemetry harness for Renault Clio 2 Cup and Clio 3 Cup, SKU 7711160897.Simple Data Acquisition Harness | Renault Clio 2/3 Cup, Twingo R2 and Megane N4
                                                                                                                                                      Do not risk driving blind on the track, losing vital telemetry logs, or missing out on analyzing your timed lap performances. The genuine Simple Data Acquisition Harness from Renault Sport (Official References: 7711160897 and 7711160709) allows you to cleanly connect your...
                                                                                                                                                      €210.52Price
                                                                                                                                                      Simple data acquisition telemetry harness for Renault Clio 2 Cup and Clio 3 Cup, SKU 7711160897.Simple Data Acquisition Harness | Renault Clio 2/3 Cup, Twingo R2 and Megane N4
                                                                                                                                                          Do not risk driving blind on the track, losing vital telemetry logs, or missing out on analyzing your timed lap performances. The genuine Simple Data Acquisition Harness from Renault Sport (Official References: 7711160897 and 7711160709) allows you to cleanly connect your...
                                                                                                                                                          €210.52Price
                                                                                                                                                          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
                                                                                                                                                                                  €20.56 Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €20.56 Price
                                                                                                                                                                                  Bouchon de poulie de dephasage Clio 2 RSBouchon de poulie de dephasage Clio 2 RS
                                                                                                                                                                                      Bouchon de poulie de dephasage Clio 2 RS
                                                                                                                                                                                      €20.56Price
                                                                                                                                                                                      Bouchon de poulie de dephasage Clio 2 RSBouchon de poulie de dephasage Clio 2 RS
                                                                                                                                                                                          Bouchon de poulie de dephasage Clio 2 RS
                                                                                                                                                                                          €20.56Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €9.30 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €9.30 Price
                                                                                                                                                                                          Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                                                              Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                                                              €9.30Price
                                                                                                                                                                                              Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                                                                  Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                                                                  €9.30Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €14.20 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €14.20 Price
                                                                                                                                                                                                  Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110
                                                                                                                                                                                                      Do not risk catastrophic engine failure due to a coolant leak. This genuine Renault water pump gasket (certified OEM part) is the only component calibrated to guarantee absolute sealing of your high-performance engine's thermal circuit. Specifically engineered for the demanding engines of the Renault Megane 4 RS ,...
                                                                                                                                                                                                      €14.20Price
                                                                                                                                                                                                      Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110
                                                                                                                                                                                                          Do not risk catastrophic engine failure due to a coolant leak. This genuine Renault water pump gasket (certified OEM part) is the only component calibrated to guarantee absolute sealing of your high-performance engine's thermal circuit. Specifically engineered for the demanding engines of the Renault Megane 4 RS ,...
                                                                                                                                                                                                          €14.20Price