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Drivetrain & Sports Gearbox Parts


Optimize Your Drivetrain: More Power, More Pleasure

At Optimiz Access, we offer custom-tailored solutions for a more efficient, direct, and responsive drivetrain. Whether you are aiming to put power down on the track or achieve sharper gear selection in daily driving, upgrading your transmission system unlocks the full potential of your sports vehicle.

Key benefits of an optimized drivetrain: faster and more precise gear shifts for dynamic driving, improved torque distribution for maximum traction, enhanced component reliability, and custom setups suited to all driving styles.

Essential Components for Gearboxes and Differentials

Our lineup brings together all the essential precision parts needed to maximize power transfer to the road:

  • Clutches & Flywheels – Reinforced clutch kits, single-mass race flywheels, and high-friction materials built to handle high torque output.
  • LSDs & Differentials – Limited-slip differentials designed to eliminate wheelspin and maximize exit traction.
  • Shifters & Short Shifters – Precision short-throw shifters delivering crisp, rapid gear engagements.
  • Final Drive Gears – Shorter ring and pinion gear sets providing explosive acceleration and mid-range response.
  • Gearbox Oils & Bearings – High-performance synthetic gear oils and heavy-duty bearings engineered to protect gears under load.

Benchmark Brands and Trusted Partners

We work with the most respected motorsport manufacturers in the industry: CAE Racing, Sadev, Quaife, 4Tech Shifter, Helix, SACHS Performance, and TTV Racing. We also stock OEM factory parts to cover all your routine maintenance, servicing, and drivetrain overhauls.

Why Choose Optimiz Access for Your Drivetrain?

Since 2010, Optimiz Access has specialized in the custom upgrading and maintenance of sports and premium vehicles. By relying on us, you gain expert technical advice, high-precision components, and professional installation in our workshop in northern France (Hauts-de-France) — near Lille, Valenciennes, Cambrai, Arras, Seclin, Douai, and Saint-Quentin. We ensure strict quality control along with fast worldwide shipping.

Gear Up and Boost Your Sports Car's Traction Today

Don't let your engine's power go to waste. Trust the expertise of Optimiz Access, select your transmission hardware today, and take advantage of our fast dispatch to get your vehicle build underway.

Active filters

  • Categories: Clutches and flywheels
  • Categories: Self-Locking
Original SADEV Clutch Release Bearing Support F1908252 - ST75 GearboxOriginal SADEV Clutch Release Bearing Support F1908252 - ST75 Gearbox
      The SADEV Clutch Release Bearing Support (references F1908252 and 0101908252 ) is an essential component for the reliable actuation of the clutch on your SADEV ST75 sequential gearbox . This genuine part is specifically designed for competition vehicles equipped with this transmission, including the Renault Clio 3 X85...
      €119.71Price
      Original SADEV Clutch Release Bearing Support F1908252 - ST75 GearboxOriginal SADEV Clutch Release Bearing Support F1908252 - ST75 Gearbox
          The SADEV Clutch Release Bearing Support (references F1908252 and 0101908252 ) is an essential component for the reliable actuation of the clutch on your SADEV ST75 sequential gearbox . This genuine part is specifically designed for competition vehicles equipped with this transmission, including the Renault Clio 3 X85...
          €119.71Price
          En Stock
          €1,389.05 Price
          En Stock
          €1,389.05 Price
          Single-Mass Flywheel & 4-Pad Unsprung Clutch KitSingle-Mass Flywheel & 4-Pad Unsprung Clutch Kit
              Unleash your sports vehicle's potential with our single-mass flywheel kit and its 4-pad unsprung clutch disc and pressure plate. Designed for direct power transmission and enhanced performance, this kit advantageously replaces your original flywheel and works perfectly with your **stock release bearing**. Ideal for sports use, it offers unprecedented...
              €1,389.05Price
              Single-Mass Flywheel & 4-Pad Unsprung Clutch KitSingle-Mass Flywheel & 4-Pad Unsprung Clutch Kit
                  Unleash your sports vehicle's potential with our single-mass flywheel kit and its 4-pad unsprung clutch disc and pressure plate. Designed for direct power transmission and enhanced performance, this kit advantageously replaces your original flywheel and works perfectly with your **stock release bearing**. Ideal for sports use, it offers unprecedented...
                  €1,389.05Price
                  En Stock
                  €2,140.86 €2,518.66 Regular price -15% off Price
                  En Stock
                  €2,140.86 €2,518.66 Regular price -15% off Price
                  Renault Clio 4 RS Clutch Kit - Original PartRenault Clio 4 RS Clutch Kit - Original Part
                      The original Renault clutch kit is specially designed for the Renault Clio 4 RS . Ensure the performance and reliability of your sports car with this complete kit, guaranteeing precise gear shifting and optimal transmission.
                      €2,140.86€2,518.66Regular price-15% offPrice
                      Renault Clio 4 RS Clutch Kit - Original PartRenault Clio 4 RS Clutch Kit - Original Part
                          The original Renault clutch kit is specially designed for the Renault Clio 4 RS . Ensure the performance and reliability of your sports car with this complete kit, guaranteeing precise gear shifting and optimal transmission.
                          €2,140.86€2,518.66Regular price-15% offPrice
                          En Stock
                          €526.61 Price
                          En Stock
                          €526.61 Price
                          Volant Moteur allégé Megane 2 RSVolant Moteur allégé Megane 2 RS
                              Volant Moteur allégé pour Megane 2 RS Convient pour l'embrayage d'origine ou tout autre embrayage renforcé compatible avec le volant moteur d'origine. Parfait en remplacement du Bimasse d'origine Poids: 5.7 Le remplacement d'un volant moteur bimasse par un monomasse peut engendrer des vibrations.
                              €526.61Price
                              Volant Moteur allégé Megane 2 RSVolant Moteur allégé Megane 2 RS
                                  Volant Moteur allégé pour Megane 2 RS Convient pour l'embrayage d'origine ou tout autre embrayage renforcé compatible avec le volant moteur d'origine. Parfait en remplacement du Bimasse d'origine Poids: 5.7 Le remplacement d'un volant moteur bimasse par un monomasse peut engendrer des vibrations.
                                  €526.61Price
                                  HEL Performance stainless steel braided aviation clutch hose with steel fittings for Renault Megane 2 RS.HEL Braided Clutch Line | Renault Megane 2 RS
                                      Do not risk a spongy clutch pedal at the end of a hard track day session, grinding gear engagements at high RPM, or a complete failure of your hydraulic line under heavy acceleration. The premium HEL Performance stainless steel braided aviation clutch line for the Renault Megane 2...
                                      €56.99Price
                                      HEL Performance stainless steel braided aviation clutch hose with steel fittings for Renault Megane 2 RS.HEL Braided Clutch Line | Renault Megane 2 RS
                                          Do not risk a spongy clutch pedal at the end of a hard track day session, grinding gear engagements at high RPM, or a complete failure of your hydraulic line under heavy acceleration. The premium HEL Performance stainless steel braided aviation clutch line for the Renault Megane 2...
                                          €56.99Price
                                          Megane 3 RS Clutch Line – Stainless Steel Braided Hose
                                              This HEL Performance braided clutch hose is specifically designed to replace the original hydraulic line on your Renault Mégane 3 RS. By eliminating the pressure accumulator, it provides a more direct clutch pedal response and increased reliability.
                                              €56.64Price
                                              Megane 3 RS Clutch Line – Stainless Steel Braided Hose
                                                  This HEL Performance braided clutch hose is specifically designed to replace the original hydraulic line on your Renault Mégane 3 RS. By eliminating the pressure accumulator, it provides a more direct clutch pedal response and increased reliability.
                                                  €56.64Price
                                                  Butée sphérique sur fourchette pour cable renforcé Clio Gr n et X65 CupButée sphérique sur fourchette pour cable renforcé Clio Gr n et X65 Cup
                                                      Butée sphérique sur fourchette pour cable renforcé Clio Gr n et X65 Cup
                                                      €50.22Price
                                                      Butée sphérique sur fourchette pour cable renforcé Clio Gr n et X65 CupButée sphérique sur fourchette pour cable renforcé Clio Gr n et X65 Cup
                                                          Butée sphérique sur fourchette pour cable renforcé Clio Gr n et X65 Cup
                                                          €50.22Price
                                                          Butée Embrayage (récepteur) d'origine Megane 4 RS boite mécaButée Embrayage (récepteur) d'origine Megane 4 RS boite méca
                                                              Butée Embrayage (récepteur) d'origine Megane 4 RS boite méca
                                                              €300.24Price
                                                              Butée Embrayage (récepteur) d'origine Megane 4 RS boite mécaButée Embrayage (récepteur) d'origine Megane 4 RS boite méca
                                                                  Butée Embrayage (récepteur) d'origine Megane 4 RS boite méca
                                                                  €300.24Price
                                                                  En Stock
                                                                  €346.48 Price
                                                                  En Stock
                                                                  €346.48 Price
                                                                  Volant moteur Twingo 2 RS et R1
                                                                      Don't compromise your **Renault Twingo 2 RS** or **Twingo R1**'s transmission! This **original RENAULT flywheel** is essential for a perfect connection between the engine and gearbox. A faulty flywheel can damage your clutch and degrade driving comfort. Choose the reliability and precision of an original part. You'll find associated complementary products at the bottom of this page.
                                                                      €346.48Price
                                                                      Volant moteur Twingo 2 RS et R1
                                                                          Don't compromise your **Renault Twingo 2 RS** or **Twingo R1**'s transmission! This **original RENAULT flywheel** is essential for a perfect connection between the engine and gearbox. A faulty flywheel can damage your clutch and degrade driving comfort. Choose the reliability and precision of an original part. You'll find associated complementary products at the bottom of this page.
                                                                          €346.48Price
                                                                          En Stock
                                                                          €19.40 Price
                                                                          En Stock
                                                                          €19.40 Price
                                                                          Contacteur début course embrayage Megane 3 RS et N4Contacteur début course embrayage Megane 3 RS et N4
                                                                              Contacteur début course embrayage Megane 3 RS et N4 Compatible également Trafic 3, Kangoo 2, Master 3, Laguna 3 Référence: 253250005R
                                                                              €19.40Price
                                                                              Contacteur début course embrayage Megane 3 RS et N4Contacteur début course embrayage Megane 3 RS et N4
                                                                                  Contacteur début course embrayage Megane 3 RS et N4 Compatible également Trafic 3, Kangoo 2, Master 3, Laguna 3 Référence: 253250005R
                                                                                  €19.40Price
                                                                                  Flexible / Durite aviation conduite embrayage Clio 3 RS
                                                                                      Flexible / Durite aviation conduite embrayage Clio 3 RS Se monte apres ce produit et non directement sur l'emetteur Conduite sortie emetteur Clio 3 RS Coté butée, prévoir le raccord visible dans les produits associés ci dessous
                                                                                      €49.99Price
                                                                                      Flexible / Durite aviation conduite embrayage Clio 3 RS
                                                                                          Flexible / Durite aviation conduite embrayage Clio 3 RS Se monte apres ce produit et non directement sur l'emetteur Conduite sortie emetteur Clio 3 RS Coté butée, prévoir le raccord visible dans les produits associés ci dessous
                                                                                          €49.99Price
                                                                                          En Stock
                                                                                          €19.40 Price
                                                                                          En Stock
                                                                                          €19.40 Price
                                                                                          Contacteur fin course embrayage Megane 3 RS et N4
                                                                                              Contacteur fin course embrayage Megane 3 RS et N4 Compatible également Trafic 3, Kangoo 2, Master 3, Laguna 3 Référence: 253250007R
                                                                                              €19.40Price
                                                                                              Contacteur fin course embrayage Megane 3 RS et N4
                                                                                                  Contacteur fin course embrayage Megane 3 RS et N4 Compatible également Trafic 3, Kangoo 2, Master 3, Laguna 3 Référence: 253250007R
                                                                                                  €19.40Price
                                                                                                  Butée AP Racing Twingo R2 - Clio R3AP RACING Hydraulic Clutch Release Bearing - Renault Clio R3 / Twingo R2
                                                                                                      The AP RACING Hydraulic Clutch Release Bearing (ref. 7711160788) is a high-performance part from the RENAULT SPORT catalog. Designed for the Renault Clio R3 and Renault Twingo R2 , it ensures smooth and precise clutch operation for optimal sports driving.
                                                                                                      €658.85Price
                                                                                                      Butée AP Racing Twingo R2 - Clio R3AP RACING Hydraulic Clutch Release Bearing - Renault Clio R3 / Twingo R2
                                                                                                          The AP RACING Hydraulic Clutch Release Bearing (ref. 7711160788) is a high-performance part from the RENAULT SPORT catalog. Designed for the Renault Clio R3 and Renault Twingo R2 , it ensures smooth and precise clutch operation for optimal sports driving.
                                                                                                          €658.85Price
                                                                                                          Tuyau sortie de butée AP Racing (nouveau diametre) Clio R3 et Twingo R2
                                                                                                              Ensure your clutch system's reliability with the genuine Renault Sport AP Racing clutch release bearing outlet hose . Specifically engineered for Twingo R2 and Clio R3 models equipped with the latest generation AP Racing bearings , this critical component guarantees precise and consistent...
                                                                                                              €48.82Price
                                                                                                              Tuyau sortie de butée AP Racing (nouveau diametre) Clio R3 et Twingo R2
                                                                                                                  Ensure your clutch system's reliability with the genuine Renault Sport AP Racing clutch release bearing outlet hose . Specifically engineered for Twingo R2 and Clio R3 models equipped with the latest generation AP Racing bearings , this critical component guarantees precise and consistent...
                                                                                                                  €48.82Price
                                                                                                                  En Stock
                                                                                                                  €329.00 Price
                                                                                                                  En Stock
                                                                                                                  €329.00 Price
                                                                                                                  Disque d'embrayage 6 patins AP Clio R3
                                                                                                                      The AP RACING 6-Paddle Clutch Disc (ref. 7711162566) is a high-performance part from the RENAULT SPORT catalog. Designed for the Renault Clio R3 , it offers optimal power transmission for an unparalleled sporty driving experience.
                                                                                                                      €329.00Price
                                                                                                                      Disque d'embrayage 6 patins AP Clio R3
                                                                                                                          The AP RACING 6-Paddle Clutch Disc (ref. 7711162566) is a high-performance part from the RENAULT SPORT catalog. Designed for the Renault Clio R3 , it offers optimal power transmission for an unparalleled sporty driving experience.
                                                                                                                          €329.00Price
                                                                                                                          Cale butée embrayage AP sur BV Clio R3 Access et MaxiAP RACING Clutch Shim Clio R3 (7711160878) - Renault Sport
                                                                                                                              The AP RACING clutch release bearing shim (ref. 7711160878 ), from the RENAULT SPORT catalog, is an essential part to optimize clutch operation on your Renault Clio R3 equipped with the SADEV sequential gearbox. It ensures precise and reliable clutch engagement.
                                                                                                                              €107.70Price
                                                                                                                              Cale butée embrayage AP sur BV Clio R3 Access et MaxiAP RACING Clutch Shim Clio R3 (7711160878) - Renault Sport
                                                                                                                                  The AP RACING clutch release bearing shim (ref. 7711160878 ), from the RENAULT SPORT catalog, is an essential part to optimize clutch operation on your Renault Clio R3 equipped with the SADEV sequential gearbox. It ensures precise and reliable clutch engagement.
                                                                                                                                  €107.70Price
                                                                                                                                  En Stock
                                                                                                                                  €1,061.60 Price
                                                                                                                                  En Stock
                                                                                                                                  €1,061.60 Price
                                                                                                                                  Volant moteur assemblé Clio R3 Access et Maxi
                                                                                                                                      Volant moteur assemblé Clio R3 Access et Maxi Référence: 7711162519
                                                                                                                                      €1,061.60Price
                                                                                                                                      Volant moteur assemblé Clio R3 Access et Maxi
                                                                                                                                          Volant moteur assemblé Clio R3 Access et Maxi Référence: 7711162519
                                                                                                                                          €1,061.60Price
                                                                                                                                          En Stock
                                                                                                                                          €13.75 Price
                                                                                                                                          En Stock
                                                                                                                                          €13.75 Price
                                                                                                                                          Douille guide butée Clio 2 RS Boite JC5 130Douille guide butée Clio 2 RS Boite JC5 130
                                                                                                                                              Douille guide butée Clio 2 RS Boite JC5 130 Attention pour les JC5 130, le joint de carter n'est pas intégré à la butée, vous le trouverez en produit associé en bas de page.
                                                                                                                                              €13.75Price
                                                                                                                                              Douille guide butée Clio 2 RS Boite JC5 130Douille guide butée Clio 2 RS Boite JC5 130
                                                                                                                                                  Douille guide butée Clio 2 RS Boite JC5 130 Attention pour les JC5 130, le joint de carter n'est pas intégré à la butée, vous le trouverez en produit associé en bas de page.
                                                                                                                                                  €13.75Price
                                                                                                                                                  En Stock
                                                                                                                                                  €52.86 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €52.86 Price
                                                                                                                                                  Douille guide butée boite JC5Douille guide butée boite JC5
                                                                                                                                                      Douille guide butée fournie avec le joint. Attention 2 montages sont possibles, verifier le montage actuel.
                                                                                                                                                      €52.86Price
                                                                                                                                                      Douille guide butée boite JC5Douille guide butée boite JC5
                                                                                                                                                          Douille guide butée fournie avec le joint. Attention 2 montages sont possibles, verifier le montage actuel.
                                                                                                                                                          €52.86Price
                                                                                                                                                          HELIX MOTORSPORT 5-Paddle Cushioned Clutch Disc Renault MEGANE 2 RSHELIX MOTORSPORT 5-Paddle Cushioned Clutch Disc Renault MEGANE 2 RS
                                                                                                                                                              HELIX MOTORSPORT 5-Paddle Cushioned Clutch Disc for Renault MEGANE 2 RS High-performance clutch disc from HELIX MOTORSPORT, 5-paddle cushioned. Optimize your MEGANE 2 RS transmission. Discover the compatible mechanism at the bottom of the page.
                                                                                                                                                              €531.26Price
                                                                                                                                                              HELIX MOTORSPORT 5-Paddle Cushioned Clutch Disc Renault MEGANE 2 RSHELIX MOTORSPORT 5-Paddle Cushioned Clutch Disc Renault MEGANE 2 RS
                                                                                                                                                                  HELIX MOTORSPORT 5-Paddle Cushioned Clutch Disc for Renault MEGANE 2 RS High-performance clutch disc from HELIX MOTORSPORT, 5-paddle cushioned. Optimize your MEGANE 2 RS transmission. Discover the compatible mechanism at the bottom of the page.
                                                                                                                                                                  €531.26Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €50.42 Price
                                                                                                                                                                  En Stock
                                                                                                                                                                  €50.42 Price
                                                                                                                                                                  Support connecteurs butée embrayage Megane N4Support connecteurs butée embrayage Megane N4
                                                                                                                                                                      Support connecteurs butée embrayage Megane N4 Référence: 7711167053
                                                                                                                                                                      €50.42Price
                                                                                                                                                                      Support connecteurs butée embrayage Megane N4Support connecteurs butée embrayage Megane N4
                                                                                                                                                                          Support connecteurs butée embrayage Megane N4 Référence: 7711167053
                                                                                                                                                                          €50.42Price
                                                                                                                                                                          Raccord M10X100 - 3/8\"X24 FILETS pour butée AP Racing Megane N4
                                                                                                                                                                              Raccord M10X100 - 3/8"X24 FILETS pour butée AP Racing Megane N4
                                                                                                                                                                              €17.81Price
                                                                                                                                                                              Raccord M10X100 - 3/8\"X24 FILETS pour butée AP Racing Megane N4
                                                                                                                                                                                  Raccord M10X100 - 3/8"X24 FILETS pour butée AP Racing Megane N4
                                                                                                                                                                                  €17.81Price