Pensez à sélectionner votre vehicule pour limiter les resultats de recherche

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: Drive Shafts
  • Categories: Hardware (Screws, nuts...)
Entraineur gauche Ragnotti Clio Gr N
      The SADEV Left Drive Flange (7711129608 / F1903157) is the original SADEV part that ensures the final transmission of engine torque from your SADEV ST66 gearbox to the driveshaft. A crucial link in the kinematic chain of your Renault Clio 2 Group N . A...
      €806.15Price
      Entraineur gauche Ragnotti Clio Gr N
          The SADEV Left Drive Flange (7711129608 / F1903157) is the original SADEV part that ensures the final transmission of engine torque from your SADEV ST66 gearbox to the driveshaft. A crucial link in the kinematic chain of your Renault Clio 2 Group N . A...
          €806.15Price
          En Stock
          €518.09 Price
          En Stock
          €518.09 Price
          Arbre (barreau) nu transmission droit Twingo R2Arbre (barreau) nu transmission droit Twingo R2
              Arbre (barreau) nu transmission droit Twingo R2 Référence: 7711167604
              €518.09Price
              Arbre (barreau) nu transmission droit Twingo R2Arbre (barreau) nu transmission droit Twingo R2
                  Arbre (barreau) nu transmission droit Twingo R2 Référence: 7711167604
                  €518.09Price
                  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
                              Coussinet Rotule  (demi coquille) pivot de quickshift Clio 2 RS
                                  Genuine Renault Ball Joint Bushings (pair of half-shells) for Clio 2 RS and Clio Gr N. Ensure the mobility and precision of your gear shift with these authentic parts. Also discover our retaining circlips and reinforced bushings for optimal performance.
                                  €5.93Price
                                  Coussinet Rotule  (demi coquille) pivot de quickshift Clio 2 RS
                                      Genuine Renault Ball Joint Bushings (pair of half-shells) for Clio 2 RS and Clio Gr N. Ensure the mobility and precision of your gear shift with these authentic parts. Also discover our retaining circlips and reinforced bushings for optimal performance.
                                      €5.93Price
                                      Vis CHC M10x150-55 Twingo R2
                                          Secure essential components of your Twingo R2 or Clio 3 X85 Cup with the original Renault CHC M10-55 screw. Don't risk incorrect installation or dangerous loosening. Discover other necessary fasteners for perfect assembly.
                                          €3.36Price
                                          Vis CHC M10x150-55 Twingo R2
                                              Secure essential components of your Twingo R2 or Clio 3 X85 Cup with the original Renault CHC M10-55 screw. Don't risk incorrect installation or dangerous loosening. Discover other necessary fasteners for perfect assembly.
                                              €3.36Price
                                              Ecrou de cardan Clio 3 RS - Megane 2 RS
                                                  Original RENAULT driveshaft nut compatible with the Renault Megane 2 RS and Renault Clio 3 RS . An essential safety element for your transmissions. Discover related complementary products below.
                                                  €17.27Price
                                                  Ecrou de cardan Clio 3 RS - Megane 2 RS
                                                      Original RENAULT driveshaft nut compatible with the Renault Megane 2 RS and Renault Clio 3 RS . An essential safety element for your transmissions. Discover related complementary products below.
                                                      €17.27Price
                                                      SADEV Shouldered Spacer Quickshift Linkage – Clio 2 Gr N (F0047029)SADEV Shouldered Spacer Quickshift Linkage – Clio 2 Gr N (F0047029)
                                                          Eliminate all axial play on your ST66 SADEV gear control system ! This shouldered linkage spacer (P/N: F0047029 ) is a crucial wear part that ensures the precise alignment and retention of the control rod linkage (including the Quickshift model) on your Renault Clio 2 Gr N . A worn or...
                                                          €6.86Price
                                                          SADEV Shouldered Spacer Quickshift Linkage – Clio 2 Gr N (F0047029)SADEV Shouldered Spacer Quickshift Linkage – Clio 2 Gr N (F0047029)
                                                              Eliminate all axial play on your ST66 SADEV gear control system ! This shouldered linkage spacer (P/N: F0047029 ) is a crucial wear part that ensures the precise alignment and retention of the control rod linkage (including the Quickshift model) on your Renault Clio 2 Gr N . A worn or...
                                                              €6.86Price
                                                              Kit séparation liquide de frein butée hydraulique
                                                                  Maximize your braking system's reliability with this brake fluid separation kit for hydraulic release bearings . Designed to isolate the clutch circuit from the main braking circuit, this upgrade is essential for sports vehicles pushed to the limit on the...
                                                                  €46.67Price
                                                                  Kit séparation liquide de frein butée hydraulique
                                                                      Maximize your braking system's reliability with this brake fluid separation kit for hydraulic release bearings . Designed to isolate the clutch circuit from the main braking circuit, this upgrade is essential for sports vehicles pushed to the limit on the...
                                                                      €46.67Price
                                                                      Collection soufflet de transmission gauche coté boite Clio 3 RS - Megane 2 RS
                                                                          Collection soufflet de transmission gauche coté boite Clio 3 RS et Megane 2 RS Véritable produit d'origine
                                                                          €108.19Price
                                                                          Collection soufflet de transmission gauche coté boite Clio 3 RS - Megane 2 RS
                                                                              Collection soufflet de transmission gauche coté boite Clio 3 RS et Megane 2 RS Véritable produit d'origine
                                                                              €108.19Price
                                                                              Joint etancheité capot de 5eme Clio RS et Gr N et Twingo RS
                                                                                  Joint etancheité capot de 5eme Clio RS et Gr N
                                                                                  €7.51Price
                                                                                  Joint etancheité capot de 5eme Clio RS et Gr N et Twingo RS
                                                                                      Joint etancheité capot de 5eme Clio RS et Gr N
                                                                                      €7.51Price
                                                                                      Grille de protection boite à crabot sadev Clio 2 Gr N
                                                                                          The Sadev F1903052 protection guard is an essential safety component for the reliability of the ST66 dog-ring gearbox in your Renault Clio 2 Gr N . It protects vital differential components against debris and external shocks, thus avoiding costly damage to the transmission . ...
                                                                                          €58.50Price
                                                                                          Grille de protection boite à crabot sadev Clio 2 Gr N
                                                                                              The Sadev F1903052 protection guard is an essential safety component for the reliability of the ST66 dog-ring gearbox in your Renault Clio 2 Gr N . It protects vital differential components against debris and external shocks, thus avoiding costly damage to the transmission . ...
                                                                                              €58.50Price
                                                                                              En Stock
                                                                                              €102.54 Price
                                                                                              En Stock
                                                                                              €102.54 Price
                                                                                              Kit soufflet de palier de Cardan Clio 2 RS
                                                                                                  Kit soufflet de palier de Cardan Clio 2 RS Attention, plusieurs modeles existent, merci de verifier la compatibilité avec votre cardan
                                                                                                  €102.54Price
                                                                                                  Kit soufflet de palier de Cardan Clio 2 RS
                                                                                                      Kit soufflet de palier de Cardan Clio 2 RS Attention, plusieurs modeles existent, merci de verifier la compatibilité avec votre cardan
                                                                                                      €102.54Price
                                                                                                      Bague étanchéité, joint spy sortie de cardan droit Clio 2 RS
                                                                                                          Don't let a simple failure compromise the driving precision of your Clio 2 RS . This right-hand driveshaft oil seal (joint spi) is a genuine RENAULT original part , guaranteeing renewed **reliability and performance**. Essential for the sealing of your gearbox, it maintains the oil level and protects your...
                                                                                                          €26.29Price
                                                                                                          Bague étanchéité, joint spy sortie de cardan droit Clio 2 RS
                                                                                                              Don't let a simple failure compromise the driving precision of your Clio 2 RS . This right-hand driveshaft oil seal (joint spi) is a genuine RENAULT original part , guaranteeing renewed **reliability and performance**. Essential for the sealing of your gearbox, it maintains the oil level and protects your...
                                                                                                              €26.29Price
                                                                                                              En Stock
                                                                                                              €1.55 Price
                                                                                                              En Stock
                                                                                                              €1.55 Price
                                                                                                              Vis CHC M8-30 cl:8.8 zinguée noir Twingo R2
                                                                                                                  Vis CHC M8-30 cl:8.8 zinguée noir Twingo R2 Référence: 7711162293
                                                                                                                  €1.55Price
                                                                                                                  Vis CHC M8-30 cl:8.8 zinguée noir Twingo R2
                                                                                                                      Vis CHC M8-30 cl:8.8 zinguée noir Twingo R2 Référence: 7711162293
                                                                                                                      €1.55Price
                                                                                                                      Left-hand inner CV boot repair kit (gearbox side) for Renault Megane 3 RS and Megane N4 rally cars.
                                                                                                                          Do not risk a catastrophic transmission fluid leak, sudden failure of your left-hand inner CV joint tripod, or the highly expensive replacement of a complete genuine Renault Sport driveshaft assembly. The Kit soufflet de transmission cardan gauche coté boite Megane 3 RS et...
                                                                                                                          €85.96Price
                                                                                                                          Left-hand inner CV boot repair kit (gearbox side) for Renault Megane 3 RS and Megane N4 rally cars.
                                                                                                                              Do not risk a catastrophic transmission fluid leak, sudden failure of your left-hand inner CV joint tripod, or the highly expensive replacement of a complete genuine Renault Sport driveshaft assembly. The Kit soufflet de transmission cardan gauche coté boite Megane 3 RS et...
                                                                                                                              €85.96Price
                                                                                                                              En Stock
                                                                                                                              €34.57 Price
                                                                                                                              En Stock
                                                                                                                              €34.57 Price
                                                                                                                              Bouchon de vidange aimanté pour boite
                                                                                                                                  Magnetic Drain Plug 16x1.5 (7711156704) Protect your engine with this genuine Renault Sport magnetic drain plug. Its 16x1.5 thread pitch is compatible with many models. It captures metal particles for cleaner oil and better engine longevity. Essential for optimal maintenance.
                                                                                                                                  €34.57Price
                                                                                                                                  Bouchon de vidange aimanté pour boite
                                                                                                                                      Magnetic Drain Plug 16x1.5 (7711156704) Protect your engine with this genuine Renault Sport magnetic drain plug. Its 16x1.5 thread pitch is compatible with many models. It captures metal particles for cleaner oil and better engine longevity. Essential for optimal maintenance.
                                                                                                                                      €34.57Price
                                                                                                                                      Soufflet de tringlerie coté quickshift Clio 2 RS y compris Gr N
                                                                                                                                          Durably protect your gearshift mechanism with this genuine Renault gearbox linkage boot . Designed to seal the junction between the gear selector rod and the connection link (or quickshift ), it prevents dust and moisture from entering. This OEM component is essential for owners of the Clio 2...
                                                                                                                                          €15.30Price
                                                                                                                                          Soufflet de tringlerie coté quickshift Clio 2 RS y compris Gr N
                                                                                                                                              Durably protect your gearshift mechanism with this genuine Renault gearbox linkage boot . Designed to seal the junction between the gear selector rod and the connection link (or quickshift ), it prevents dust and moisture from entering. This OEM component is essential for owners of the Clio 2...
                                                                                                                                              €15.30Price
                                                                                                                                              En Stock
                                                                                                                                              €94.62 Price
                                                                                                                                              En Stock
                                                                                                                                              €94.62 Price
                                                                                                                                              Steel clutch release fork and mechanical thrust bearing assembly for Renault Clio 2 RS JC5 gearboxes.
                                                                                                                                                  Do not risk a loose clutch pedal sticking to the floorboard during quick shifts, a total locking out of gear changes at high RPM, or an asymmetrical clamping pressure that will destroy your manual JC5 gearbox. The premium heavy-duty Fourchette d'embrayage et butée d'embrayage Clio 2...
                                                                                                                                                  €94.62Price
                                                                                                                                                  Steel clutch release fork and mechanical thrust bearing assembly for Renault Clio 2 RS JC5 gearboxes.
                                                                                                                                                      Do not risk a loose clutch pedal sticking to the floorboard during quick shifts, a total locking out of gear changes at high RPM, or an asymmetrical clamping pressure that will destroy your manual JC5 gearbox. The premium heavy-duty Fourchette d'embrayage et butée d'embrayage Clio 2...
                                                                                                                                                      €94.62Price
                                                                                                                                                      En Stock
                                                                                                                                                      €65.56 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €65.56 Price
                                                                                                                                                      Collection soufflet Megane 3 RS coté roueCollection soufflet Megane 3 RS coté roue
                                                                                                                                                          Collection soufflet Megane 3 RS coté roue Véritable produit d'origine
                                                                                                                                                          €65.56Price
                                                                                                                                                          Collection soufflet Megane 3 RS coté roueCollection soufflet Megane 3 RS coté roue
                                                                                                                                                              Collection soufflet Megane 3 RS coté roue Véritable produit d'origine
                                                                                                                                                              €65.56Price
                                                                                                                                                              En Stock
                                                                                                                                                              €1,901.64 Price
                                                                                                                                                              En Stock
                                                                                                                                                              €1,901.64 Price
                                                                                                                                                              Transmission gauche assemblée Clio R3 MaxiRenault Sport Left Drive Shaft for Clio R3 Max
                                                                                                                                                                  Do not let a mechanical failure compromise your next rally. This assembled left-hand drive shaft is an official Renault Sport component (reference 7711168126 ), specifically developed for the Renault Clio R3 Max . Engineered to withstand the extreme constraints of a competition-grade F4R engine, this left CV...
                                                                                                                                                                  €1,901.64Price
                                                                                                                                                                  Transmission gauche assemblée Clio R3 MaxiRenault Sport Left Drive Shaft for Clio R3 Max
                                                                                                                                                                      Do not let a mechanical failure compromise your next rally. This assembled left-hand drive shaft is an official Renault Sport component (reference 7711168126 ), specifically developed for the Renault Clio R3 Max . Engineered to withstand the extreme constraints of a competition-grade F4R engine, this left CV...
                                                                                                                                                                      €1,901.64Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €4.18 Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €4.18 Price
                                                                                                                                                                      Pivot surmoulé Clio 2 RS et Gr NPivot surmoulé Clio 2 RS et Gr N
                                                                                                                                                                          Pivot surmoulé Clio 2 RS et Gr N Point d'appui pour le mouvement de la fourchette de boite
                                                                                                                                                                          €4.18Price
                                                                                                                                                                          Pivot surmoulé Clio 2 RS et Gr NPivot surmoulé Clio 2 RS et Gr N
                                                                                                                                                                              Pivot surmoulé Clio 2 RS et Gr N Point d'appui pour le mouvement de la fourchette de boite
                                                                                                                                                                              €4.18Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €289.28 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €289.28 Price
                                                                                                                                                                              Genuine SADEV STDSA sequential gearbox gear position potentiometer sensor part F0089033.
                                                                                                                                                                                  Do not risk missed gear shifts, erratic ignition cut-offs, or costly dog-ring damage on your sequential transmission. The genuine SADEV STDSA gear position sensor (OEM reference F0089033 ) is the precision electronic sensor required to accurately detect...
                                                                                                                                                                                  €289.28Price
                                                                                                                                                                                  Genuine SADEV STDSA sequential gearbox gear position potentiometer sensor part F0089033.
                                                                                                                                                                                      Do not risk missed gear shifts, erratic ignition cut-offs, or costly dog-ring damage on your sequential transmission. The genuine SADEV STDSA gear position sensor (OEM reference F0089033 ) is the precision electronic sensor required to accurately detect...
                                                                                                                                                                                      €289.28Price
                                                                                                                                                                                      Collection de soufflet de cardan gauche coté boite Clio 2 RS Phase 2 et 3
                                                                                                                                                                                          Collection de soufflet de cardan gauche coté boite Clio 2 RS
                                                                                                                                                                                          €86.59Price
                                                                                                                                                                                          Collection de soufflet de cardan gauche coté boite Clio 2 RS Phase 2 et 3
                                                                                                                                                                                              Collection de soufflet de cardan gauche coté boite Clio 2 RS
                                                                                                                                                                                              €86.59Price
                                                                                                                                                                                              Circlips de fourchette de marche arrière Clio Gr N
                                                                                                                                                                                                  Never underestimate the importance of small parts! This SADEV reverse gear shift fork circlip (P/N: 0601002 ) is an essential safety component for your ST66 dog-ring gearbox in the Renault Clio 2 Gr N . It ensures the precise retention of the reverse gear shift fork , preventing any misalignment or jamming....
                                                                                                                                                                                                  €1.44Price
                                                                                                                                                                                                  Circlips de fourchette de marche arrière Clio Gr N
                                                                                                                                                                                                      Never underestimate the importance of small parts! This SADEV reverse gear shift fork circlip (P/N: 0601002 ) is an essential safety component for your ST66 dog-ring gearbox in the Renault Clio 2 Gr N . It ensures the precise retention of the reverse gear shift fork , preventing any misalignment or jamming....
                                                                                                                                                                                                      €1.44Price
                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                      €1,594.54 Price
                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                      €1,594.54 Price
                                                                                                                                                                                                      Transmission droite assemblée Clio R3 MaxiRenault Sport Right Drive Shaft for Clio R3 Max
                                                                                                                                                                                                          Maintain the traction and balance of your front axle with this complete right-hand drive shaft , an original Renault Sport component (reference 7711168127 ). Specifically calibrated for the high-stress environment of the Renault Clio R3 Max , this CV axle ensures absolute reliability during full-throttle gear changes. Do not...
                                                                                                                                                                                                          €1,594.54Price
                                                                                                                                                                                                          Transmission droite assemblée Clio R3 MaxiRenault Sport Right Drive Shaft for Clio R3 Max
                                                                                                                                                                                                              Maintain the traction and balance of your front axle with this complete right-hand drive shaft , an original Renault Sport component (reference 7711168127 ). Specifically calibrated for the high-stress environment of the Renault Clio R3 Max , this CV axle ensures absolute reliability during full-throttle gear changes. Do not...
                                                                                                                                                                                                              €1,594.54Price