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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.

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  • Categories: Drive Shafts
  • Categories: Hardware (Screws, nuts...)
En Stock
€21.77 Price
En Stock
€21.77 Price
Joint double lèvres sortie de cardan Twingo R2Joint double lèvres sortie de cardan Twingo R2
      Joint double lèvres sortie de cardan Twingo R2 Joint identique pour le coté gauche et droit
      €21.77Price
      Joint double lèvres sortie de cardan Twingo R2Joint double lèvres sortie de cardan Twingo R2
          Joint double lèvres sortie de cardan Twingo R2 Joint identique pour le coté gauche et droit
          €21.77Price
          Soufflet Commande de Boite Clio 2 RS et  Gr N
              An Original RENAULT part , this quickshift control rod boot is essential for the longevity and precision of your gear selection system. It protects the rod joints against water, dust, and contaminants. A manufacturer quality component indispensable for maintaining the **sharp gear change feel**...
              €6.71Price
              Soufflet Commande de Boite Clio 2 RS et  Gr N
                  An Original RENAULT part , this quickshift control rod boot is essential for the longevity and precision of your gear selection system. It protects the rod joints against water, dust, and contaminants. A manufacturer quality component indispensable for maintaining the **sharp gear change feel**...
                  €6.71Price
                  En Stock
                  €26.08 Price
                  En Stock
                  €26.08 Price
                  Graisse de transmission coté boite Megane 3 N4
                      Driveshaft Grease Renault Sport Optimize the longevity and performance of your driveshafts with this high-performance Renault Sport grease. Designed for the Renault Megane N4 equipped with the Sadev gearbox, it ensures optimal lubrication and protection against wear. Essential for maximum reliability in competition.
                      €26.08Price
                      Graisse de transmission coté boite Megane 3 N4
                          Driveshaft Grease Renault Sport Optimize the longevity and performance of your driveshafts with this high-performance Renault Sport grease. Designed for the Renault Megane N4 equipped with the Sadev gearbox, it ensures optimal lubrication and protection against wear. Essential for maximum reliability in competition.
                          €26.08Price
                          Anneau d'arret 2.0 cardan Clio R3
                              The Clio R3 transmission retaining ring (ref. 7711160756 ) is a performance part from the RENAULT SPORT catalog, essential for securing the transmission of your Renault Clio R3 Max and Renault Clio R3 Access . It ensures reliable and precise retention, crucial for competition. We ship worldwide.
                              €5.23Price
                              Anneau d'arret 2.0 cardan Clio R3
                                  The Clio R3 transmission retaining ring (ref. 7711160756 ) is a performance part from the RENAULT SPORT catalog, essential for securing the transmission of your Renault Clio R3 Max and Renault Clio R3 Access . It ensures reliable and precise retention, crucial for competition. We ship worldwide.
                                  €5.23Price
                                  Goujon fixation boite sur moteur Clio 2 RS
                                      Genuine Renault Gearbox/Engine Fixing Stud (78mm) - Clio 2 RS, Clio 2 Gr N, Clio 3 RS Authentic Renault fixing stud, 78mm length. Ensures a solid and precise connection between the gearbox and the engine. Specifically designed for Renault Clio 2 RS, Clio 2 Gr N, and Clio 3 RS models. You can also find the...
                                      €4.91Price
                                      Goujon fixation boite sur moteur Clio 2 RS
                                          Genuine Renault Gearbox/Engine Fixing Stud (78mm) - Clio 2 RS, Clio 2 Gr N, Clio 3 RS Authentic Renault fixing stud, 78mm length. Ensures a solid and precise connection between the gearbox and the engine. Specifically designed for Renault Clio 2 RS, Clio 2 Gr N, and Clio 3 RS models. You can also find the...
                                          €4.91Price
                                          Cable de verrouillage M-AR Clio 3 X85 Cup
                                              Gearbox Reverse Gear Unlock Cable Renault Sport Clio 3 X85 Cup SADEV ST75 (Ref: 7711160360) Ensure the reliable operation of the reverse gear mechanism of your Renault Clio 3 X85 Cup equipped with the SADEV ST75 sequential gearbox with this genuine Renault Sport reverse gear unlock cable (Ref: 7711160360 ). A...
                                              €195.66Price
                                              Cable de verrouillage M-AR Clio 3 X85 Cup
                                                  Gearbox Reverse Gear Unlock Cable Renault Sport Clio 3 X85 Cup SADEV ST75 (Ref: 7711160360) Ensure the reliable operation of the reverse gear mechanism of your Renault Clio 3 X85 Cup equipped with the SADEV ST75 sequential gearbox with this genuine Renault Sport reverse gear unlock cable (Ref: 7711160360 ). A...
                                                  €195.66Price
                                                  Tulipe gauche Clio 3 Cup
                                                      The SADEV Left Side Output Flange (references F1908350 / 7711160348 ) is the gearbox output element that ensures the essential connection between the differential and the driveshaft (Lobro type) of your left-hand transmission. A vital part of the SADEV ST75 sequential gearbox , it is homologated for the...
                                                      €583.44Price
                                                      Tulipe gauche Clio 3 Cup
                                                          The SADEV Left Side Output Flange (references F1908350 / 7711160348 ) is the gearbox output element that ensures the essential connection between the differential and the driveshaft (Lobro type) of your left-hand transmission. A vital part of the SADEV ST75 sequential gearbox , it is homologated for the...
                                                          €583.44Price
                                                          Dual-sealed flywheel pilot guide bearing for Renault Sport manual input shafts.
                                                              Do not risk a catastrophic mechanical failure of your gearbox, severe whining noises during gear changes, or an input shaft misalignment that will prematurely destroy your brand-new clutch kit. The premium Roulement de guidage d'arbre primaire pour Renault Sport (Clio 2 RS, Clio 3...
                                                              €12.84Price
                                                              Dual-sealed flywheel pilot guide bearing for Renault Sport manual input shafts.
                                                                  Do not risk a catastrophic mechanical failure of your gearbox, severe whining noises during gear changes, or an input shaft misalignment that will prematurely destroy your brand-new clutch kit. The premium Roulement de guidage d'arbre primaire pour Renault Sport (Clio 2 RS, Clio 3...
                                                                  €12.84Price
                                                                  Coupelle NTN cardan Clio Gr N Clio R3 et Twingo R2
                                                                      Ensure your transmission reliability with this genuine Renault Sport NTN cup . A key component of your drive shaft assembly, it is specifically designed for the Renault Clio 2 Cup (X65) , Clio 2 Group N , Clio 3 Cup (X85) , and Clio R3 . This official component guarantees perfect...
                                                                      €7.32Price
                                                                      Coupelle NTN cardan Clio Gr N Clio R3 et Twingo R2
                                                                          Ensure your transmission reliability with this genuine Renault Sport NTN cup . A key component of your drive shaft assembly, it is specifically designed for the Renault Clio 2 Cup (X65) , Clio 2 Group N , Clio 3 Cup (X85) , and Clio R3 . This official component guarantees perfect...
                                                                          €7.32Price
                                                                          Thermoplastic outer CV joint boot kit with clamps and grease for Renault Clio 2 RS track cars.
                                                                              Do not risk a massive grease spray over your high-performance front brake discs, sudden failure of your outer CV joint, or a forced retirement during a competitive rally stage. The premium Kit soufflet graisse et collier coté bol Clio 2 Gr N is the high-strength driveline...
                                                                              €107.52Price
                                                                              Thermoplastic outer CV joint boot kit with clamps and grease for Renault Clio 2 RS track cars.
                                                                                  Do not risk a massive grease spray over your high-performance front brake discs, sudden failure of your outer CV joint, or a forced retirement during a competitive rally stage. The premium Kit soufflet graisse et collier coté bol Clio 2 Gr N is the high-strength driveline...
                                                                                  €107.52Price
                                                                                  Tuyau entrée butée (nouveau diamètre) Clio R3 et Twingo R2
                                                                                      Tuyau entrée butée (nouveau diamètre)
                                                                                      €45.26Price
                                                                                      Tuyau entrée butée (nouveau diamètre) Clio R3 et Twingo R2
                                                                                          Tuyau entrée butée (nouveau diamètre)
                                                                                          €45.26Price
                                                                                          Dispo selon configuration
                                                                                          €1,414.73 €1,768.42 Regular price -20% off Price
                                                                                          Dispo selon configuration
                                                                                          €1,414.73 €1,768.42 Regular price -20% off Price
                                                                                          Transmission droite Twingo R2 EVOTransmission droite Twingo R2 EVO
                                                                                            • Pack
                                                                                            Transmission droite Twingo R2 EVO
                                                                                            €1,414.73€1,768.42Regular price-20% offPrice
                                                                                            Transmission droite Twingo R2 EVOTransmission droite Twingo R2 EVO
                                                                                              • Pack
                                                                                              Transmission droite Twingo R2 EVO
                                                                                              €1,414.73€1,768.42Regular price-20% offPrice
                                                                                              En Stock
                                                                                              €399.53 Price
                                                                                              En Stock
                                                                                              €399.53 Price
                                                                                              Bol de roue ass et modifié Twingo R2Genuine RENAULT Sport Wheel Hub Cup - Twingo R2
                                                                                                  Do not take any risks with the transmission of your Twingo R2 ! Get the Genuine RENAULT Sport Wheel Hub Cup (Tripod Joint Housing), the splined end of the driveshaft that seats into the wheel hub. A critical part for the traction of your sports car . New part sourced from the official catalogue for flawless...
                                                                                                  €399.53Price
                                                                                                  Bol de roue ass et modifié Twingo R2Genuine RENAULT Sport Wheel Hub Cup - Twingo R2
                                                                                                      Do not take any risks with the transmission of your Twingo R2 ! Get the Genuine RENAULT Sport Wheel Hub Cup (Tripod Joint Housing), the splined end of the driveshaft that seats into the wheel hub. A critical part for the traction of your sports car . New part sourced from the official catalogue for flawless...
                                                                                                      €399.53Price
                                                                                                      New Right Driveshaft - Renault Clio 2 RS Phase 2 and Phase 3New Right Driveshaft - Renault Clio 2 RS Phase 2 and Phase 3
                                                                                                          Replace your worn or damaged right driveshaft with this high-quality new right driveshaft , specifically designed for the Renault Clio 2 RS Phase 2 and Phase 3 . Ensure smooth and reliable power transmission for optimal performance.
                                                                                                          €194.95Price
                                                                                                          New Right Driveshaft - Renault Clio 2 RS Phase 2 and Phase 3New Right Driveshaft - Renault Clio 2 RS Phase 2 and Phase 3
                                                                                                              Replace your worn or damaged right driveshaft with this high-quality new right driveshaft , specifically designed for the Renault Clio 2 RS Phase 2 and Phase 3 . Ensure smooth and reliable power transmission for optimal performance.
                                                                                                              €194.95Price
                                                                                                              En Stock
                                                                                                              €1,145.76 Price
                                                                                                              En Stock
                                                                                                              €1,145.76 Price
                                                                                                              Left Evo reinforced driveshaft CV axle Renault Sport Megane N4 SADEV ref 7711167653
                                                                                                                  Don't risk driveshaft failure or loss of traction during a rally stage or track day. The genuine Renault Sport / SADEV left evolved (Evo) driveshaft (Reference: 7711167653) is specifically engineered to handle high torque output and extreme mechanical stress on the...
                                                                                                                  €1,145.76Price
                                                                                                                  Left Evo reinforced driveshaft CV axle Renault Sport Megane N4 SADEV ref 7711167653
                                                                                                                      Don't risk driveshaft failure or loss of traction during a rally stage or track day. The genuine Renault Sport / SADEV left evolved (Evo) driveshaft (Reference: 7711167653) is specifically engineered to handle high torque output and extreme mechanical stress on the...
                                                                                                                      €1,145.76Price
                                                                                                                      En Stock
                                                                                                                      €67.75 Price
                                                                                                                      En Stock
                                                                                                                      €67.75 Price
                                                                                                                      Biellette de boite de vitesse Clio 2 RS et Gr N
                                                                                                                          Biellette de boite de vitesse Clio 2 RS et Gr N. Véritable pièce d'origine
                                                                                                                          €67.75Price
                                                                                                                          Biellette de boite de vitesse Clio 2 RS et Gr N
                                                                                                                              Biellette de boite de vitesse Clio 2 RS et Gr N. Véritable pièce d'origine
                                                                                                                              €67.75Price
                                                                                                                              En Stock
                                                                                                                              €25.91 Price
                                                                                                                              En Stock
                                                                                                                              €25.91 Price
                                                                                                                              Soufflet de cardan gauche coté BV Clio R3Left Gearbox Side CV Boot - Renault Clio R3
                                                                                                                                  Protect your competition transmission with this left-hand gearbox side CV boot for the Clio R3 (reference 7711160753 ). This specific Renault Sport component is essential for maintaining the seal of your gearbox and ensuring optimal...
                                                                                                                                  €25.91Price
                                                                                                                                  Soufflet de cardan gauche coté BV Clio R3Left Gearbox Side CV Boot - Renault Clio R3
                                                                                                                                      Protect your competition transmission with this left-hand gearbox side CV boot for the Clio R3 (reference 7711160753 ). This specific Renault Sport component is essential for maintaining the seal of your gearbox and ensuring optimal...
                                                                                                                                      €25.91Price
                                                                                                                                      En Stock
                                                                                                                                      €1.75 Price
                                                                                                                                      En Stock
                                                                                                                                      €1.75 Price
                                                                                                                                      Anneau d'arret transmission circlips Twingo R2
                                                                                                                                          Anneau d'arret transmission circlips Twingo R2 Référence: 7711167345
                                                                                                                                          €1.75Price
                                                                                                                                          Anneau d'arret transmission circlips Twingo R2
                                                                                                                                              Anneau d'arret transmission circlips Twingo R2 Référence: 7711167345
                                                                                                                                              €1.75Price
                                                                                                                                              En Stock
                                                                                                                                              €16.66 Price
                                                                                                                                              En Stock
                                                                                                                                              €16.66 Price
                                                                                                                                              Soufflet de Cardan Coté BV Phase 2 Clio Gr N
                                                                                                                                                  Soufflet de Cardan Coté BV Phase 2 Clio Gr N Référence: 7711129525
                                                                                                                                                  €16.66Price
                                                                                                                                                  Soufflet de Cardan Coté BV Phase 2 Clio Gr N
                                                                                                                                                      Soufflet de Cardan Coté BV Phase 2 Clio Gr N Référence: 7711129525
                                                                                                                                                      €16.66Price
                                                                                                                                                      En Stock
                                                                                                                                                      €16.52 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €16.52 Price
                                                                                                                                                      Collier soufflet sur tulipe diam 93.5 Clio Gr N
                                                                                                                                                          Collier soufflet sur tulipe diam 93.5 Clio Gr N Référence: 77 11 156 805
                                                                                                                                                          €16.52Price
                                                                                                                                                          Collier soufflet sur tulipe diam 93.5 Clio Gr N
                                                                                                                                                              Collier soufflet sur tulipe diam 93.5 Clio Gr N Référence: 77 11 156 805
                                                                                                                                                              €16.52Price