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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: Bearings
  • Categories: Drive Shafts
  • Categories: Short Bridge
  • Categories: Shortshift & Quikshift
Short Shifter Performance - Renault Mégane 4 RS (PK4032 Manual Gearbox)Short Shifter Performance - Renault Mégane 4 RS (PK4032 Manual Gearbox)
      Transform the driving sensation of your Renault Mégane 4 RS ! This short shifter is specifically designed for the PK4032 manual gearbox . It replaces the stock part to significantly reduce the lever throw , allowing for shorter, faster, and more precise gear changes. Installation is simple, without opening the gearbox, and the pin...
      €209.00Price
      Short Shifter Performance - Renault Mégane 4 RS (PK4032 Manual Gearbox)Short Shifter Performance - Renault Mégane 4 RS (PK4032 Manual Gearbox)
          Transform the driving sensation of your Renault Mégane 4 RS ! This short shifter is specifically designed for the PK4032 manual gearbox . It replaces the stock part to significantly reduce the lever throw , allowing for shorter, faster, and more precise gear changes. Installation is simple, without opening the gearbox, and the pin...
          €209.00Price
          Right-Hand Thread Uniball Joint 7711156407 - Clio Cup, R3 & Twingo R2Right-Hand Thread Uniball Joint 7711156407 - Clio Cup, R3 & Twingo R2
              Ensure your chassis precision with this Right-Hand Thread Uniball Joint (reference 7711156407 ), a key component for competitive racing. Specifically validated for Renault Clio 2 Cup , Clio 3 Cup , Clio R3 , and Twingo R2 , it eliminates steering vagueness. Do not...
              €52.69Price
              Right-Hand Thread Uniball Joint 7711156407 - Clio Cup, R3 & Twingo R2Right-Hand Thread Uniball Joint 7711156407 - Clio Cup, R3 & Twingo R2
                  Ensure your chassis precision with this Right-Hand Thread Uniball Joint (reference 7711156407 ), a key component for competitive racing. Specifically validated for Renault Clio 2 Cup , Clio 3 Cup , Clio R3 , and Twingo R2 , it eliminates steering vagueness. Do not...
                  €52.69Price
                  En Stock
                  €206.06 Price
                  En Stock
                  €206.06 Price
                  Câble commande de vitesse \"sélection\" Twingo R1
                      Câble commande de vitesse "sélection" Twingo R1 Référence: 7711167408
                      €206.06Price
                      Câble commande de vitesse \"sélection\" Twingo R1
                          Câble commande de vitesse "sélection" Twingo R1 Référence: 7711167408
                          €206.06Price
                          En Stock
                          €206.06 Price
                          En Stock
                          €206.06 Price
                          Câble commande de vitesse \"passage\" Twingo R1
                              Câble commande de vitesse "passage" Twingo R1 Référence: 7711167407
                              €206.06Price
                              Câble commande de vitesse \"passage\" Twingo R1
                                  Câble commande de vitesse "passage" Twingo R1 Référence: 7711167407
                                  €206.06Price
                                  copy of Roulement avant Clio 3 RS - Megane 3 RS - Megane 4 RScopy of Roulement avant Clio 3 RS - Megane 3 RS - Megane 4 RS
                                      Roulement avant Clio 3 RS - Megane 3 RS - Megane 4 RS
                                      €304.88Price
                                      copy of Roulement avant Clio 3 RS - Megane 3 RS - Megane 4 RScopy of Roulement avant Clio 3 RS - Megane 3 RS - Megane 4 RS
                                          Roulement avant Clio 3 RS - Megane 3 RS - Megane 4 RS
                                          €304.88Price
                                          En Stock
                                          €19.17 €25.00 Regular price -€5.83 off Price
                                          En Stock
                                          €19.17 €25.00 Regular price -€5.83 off Price
                                          Bague de rotation levier de vitesse
                                              Gear Shift Lever Rotation Bushing - Renault Clio 2 RS (Unit) Reduces gear shift lever play for more precise shifts. Improves driving feel and responsiveness of your Clio 2 RS.
                                              €19.17€25.00Regular price-€5.83 offPrice
                                              Bague de rotation levier de vitesse
                                                  Gear Shift Lever Rotation Bushing - Renault Clio 2 RS (Unit) Reduces gear shift lever play for more precise shifts. Improves driving feel and responsiveness of your Clio 2 RS.
                                                  €19.17€25.00Regular price-€5.83 offPrice
                                                  En Stock
                                                  €0.36 Price
                                                  En Stock
                                                  €0.36 Price
                                                  Vis CHC M5-30 cl:8.8 zingué noir Twingo R2Vis CHC M5-30 cl:8.8 zingué noir Twingo R2
                                                      Vis CHC M5-30 cl:8.8 zingué noir Twingo R2 noirRéférence: 7711162292
                                                      €0.36Price
                                                      Vis CHC M5-30 cl:8.8 zingué noir Twingo R2Vis CHC M5-30 cl:8.8 zingué noir Twingo R2
                                                          Vis CHC M5-30 cl:8.8 zingué noir Twingo R2 noirRéférence: 7711162292
                                                          €0.36Price
                                                          En Stock
                                                          €2.24 Price
                                                          En Stock
                                                          €2.24 Price
                                                          Vis CHC M7-20 cl:10.9 zingué noir Twingo R2Vis CHC M7-20 cl:10.9 zingué noir Twingo R2
                                                              Vis CHC M7-20 cl:10.9 zingué noir Twingo R2 noirRéférence: 7711162294
                                                              €2.24Price
                                                              Vis CHC M7-20 cl:10.9 zingué noir Twingo R2Vis CHC M7-20 cl:10.9 zingué noir Twingo R2
                                                                  Vis CHC M7-20 cl:10.9 zingué noir Twingo R2 noirRéférence: 7711162294
                                                                  €2.24Price
                                                                  Ressort de bague de marche arrière Megane 3 RS et N4
                                                                      Ressort de bague de marche arrière Megane 3 RS et N4 Référence: 8201070311
                                                                      €2.71Price
                                                                      Ressort de bague de marche arrière Megane 3 RS et N4
                                                                          Ressort de bague de marche arrière Megane 3 RS et N4 Référence: 8201070311
                                                                          €2.71Price
                                                                          En Stock
                                                                          €332.22 Price
                                                                          En Stock
                                                                          €332.22 Price
                                                                          Genuine Renault OEM dual manual gear selection and shifter cable set part number 344130994R.Gear Shifter Cable Set | Renault Megane 4 RS
                                                                              Do not risk a missed gear change during an intense track day session, getting stuck in neutral during heavy acceleration, or enduring a loose and vague shifter feel on your daily drive. The genuine Renault Megane 4 RS gear selector shifter cable set , carrying the official...
                                                                              €332.22Price
                                                                              Genuine Renault OEM dual manual gear selection and shifter cable set part number 344130994R.Gear Shifter Cable Set | Renault Megane 4 RS
                                                                                  Do not risk a missed gear change during an intense track day session, getting stuck in neutral during heavy acceleration, or enduring a loose and vague shifter feel on your daily drive. The genuine Renault Megane 4 RS gear selector shifter cable set , carrying the official...
                                                                                  €332.22Price
                                                                                  En Stock
                                                                                  €599.00 Price
                                                                                  En Stock
                                                                                  €599.00 Price
                                                                                  Levier de vitesse racing Clio 3 RSComplete Racing Shifter | Renault Clio 3 RS
                                                                                      Radically enhance your performance with this complete racing shifter for the Renault Clio 3 RS. Designed for optimal precision and speed, it reduces gear shift times and offers a more ergonomic driving position.
                                                                                      €599.00Price
                                                                                      Levier de vitesse racing Clio 3 RSComplete Racing Shifter | Renault Clio 3 RS
                                                                                          Radically enhance your performance with this complete racing shifter for the Renault Clio 3 RS. Designed for optimal precision and speed, it reduces gear shift times and offers a more ergonomic driving position.
                                                                                          €599.00Price
                                                                                          Levier de Vitesse Racing CAE Megane 2 RS
                                                                                            • Pack
                                                                                            CAE RACING Racing Shifter for Renault Megane 2 RS High-performance CAE RACING racing shifter. Optimized position, increased precision, and ultra-fast gear changes for Megane 2 RS. Specific cables included. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
                                                                                            €1,350.80Price
                                                                                            Levier de Vitesse Racing CAE Megane 2 RS
                                                                                              • Pack
                                                                                              CAE RACING Racing Shifter for Renault Megane 2 RS High-performance CAE RACING racing shifter. Optimized position, increased precision, and ultra-fast gear changes for Megane 2 RS. Specific cables included. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
                                                                                              €1,350.80Price
                                                                                              Levier de Vitesse Racing (shortshift) CAE SHIFTER Clio 3 RS
                                                                                                • Pack
                                                                                                CAE RACING Racing Shifter for Renault Clio 3 RS High-performance CAE RACING shifter for Clio 3 RS. Optimized position, increased precision, and ultra-fast gear changes. Specific cables included. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
                                                                                                €1,255.46Price
                                                                                                Levier de Vitesse Racing (shortshift) CAE SHIFTER Clio 3 RS
                                                                                                  • Pack
                                                                                                  CAE RACING Racing Shifter for Renault Clio 3 RS High-performance CAE RACING shifter for Clio 3 RS. Optimized position, increased precision, and ultra-fast gear changes. Specific cables included. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
                                                                                                  €1,255.46Price
                                                                                                  Levier de vitesse Racing CAE SHIFTER Twingo 2 RS
                                                                                                    • Pack
                                                                                                    Levier de vitesse Racing CAE SHIFTER Twingo 2 RS
                                                                                                    €1,169.75Price
                                                                                                    Levier de vitesse Racing CAE SHIFTER Twingo 2 RS
                                                                                                      • Pack
                                                                                                      Levier de vitesse Racing CAE SHIFTER Twingo 2 RS
                                                                                                      €1,169.75Price
                                                                                                      Levier de vitesse Racing CAE SHIFTER Megane 4 RSCAE RACING Racing Shifter Renault Megane 4 RS (Customizable)
                                                                                                        • Pack
                                                                                                        CAE RACING Racing Shifter for Renault Megane 4 RS High-performance CAE RACING shifter. Optimized position, extreme precision, and instantaneous gear changes. Customizable chassis and knob colors. Important: Specific shift cables required for Megane 4 RS Trophy-R installation. Discover complementary products at the bottom of the...
                                                                                                        €1,375.45Price
                                                                                                        Levier de vitesse Racing CAE SHIFTER Megane 4 RSCAE RACING Racing Shifter Renault Megane 4 RS (Customizable)
                                                                                                          • Pack
                                                                                                          CAE RACING Racing Shifter for Renault Megane 4 RS High-performance CAE RACING shifter. Optimized position, extreme precision, and instantaneous gear changes. Customizable chassis and knob colors. Important: Specific shift cables required for Megane 4 RS Trophy-R installation. Discover complementary products at the bottom of the...
                                                                                                          €1,375.45Price
                                                                                                          Levier de Vitesse Racing CAE SHIFTER Megane 3 RSCAE RACING Racing Shifter Renault Megane 3 RS (Customizable)
                                                                                                            • Pack
                                                                                                            CAE RACING Racing Shifter for Renault Megane 3 RS High-performance CAE RACING shifter. Optimized position, increased precision, and ultra-fast gear changes. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
                                                                                                            €1,051.76Price
                                                                                                            Levier de Vitesse Racing CAE SHIFTER Megane 3 RSCAE RACING Racing Shifter Renault Megane 3 RS (Customizable)
                                                                                                              • Pack
                                                                                                              CAE RACING Racing Shifter for Renault Megane 3 RS High-performance CAE RACING shifter. Optimized position, increased precision, and ultra-fast gear changes. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
                                                                                                              €1,051.76Price
                                                                                                              Dispo selon configuration
                                                                                                              €56.46 Price
                                                                                                              Dispo selon configuration
                                                                                                              €56.46 Price
                                                                                                              Pommeau de Levier CAE
                                                                                                                  Pommeau de Levier CAE Shifter Couleur au choix Sur la photo, les couleurs sont de gauche à droite: Noire, Antracite, Bleu, Rouge, Gris, Orange, Blanc, Vert
                                                                                                                  €56.46Price
                                                                                                                  Pommeau de Levier CAE
                                                                                                                      Pommeau de Levier CAE Shifter Couleur au choix Sur la photo, les couleurs sont de gauche à droite: Noire, Antracite, Bleu, Rouge, Gris, Orange, Blanc, Vert
                                                                                                                      €56.46Price
                                                                                                                      En Stock
                                                                                                                      €92.05 Price
                                                                                                                      En Stock
                                                                                                                      €92.05 Price
                                                                                                                      Chape commande BV avec vis Clio R3 Access et Maxi
                                                                                                                          Chape commande BV avec vis Clio R3 Access et Maxi Référence: 7711160344
                                                                                                                          €92.05Price
                                                                                                                          Chape commande BV avec vis Clio R3 Access et Maxi
                                                                                                                              Chape commande BV avec vis Clio R3 Access et Maxi Référence: 7711160344
                                                                                                                              €92.05Price
                                                                                                                              Uprated front wheel hub bearing for Renault Clio 3 RS and Megane 3 / 4 RS, SKUs: 7711160425 8200416590.Front Wheel Hub Bearing | Renault Clio 3 RS - Megane 3 / 4 RS
                                                                                                                                  Prevent low-frequency cabin droning, structural wheel hub play, and the degradation of your steering accuracy under heavy cornering loads. The heavy-duty Front Wheel Hub Bearing for Clio 3 RS, Megane 3 RS, and Megane 4 RS secures the structural alignment of your front axle...
                                                                                                                                  €123.42Price
                                                                                                                                  Uprated front wheel hub bearing for Renault Clio 3 RS and Megane 3 / 4 RS, SKUs: 7711160425 8200416590.Front Wheel Hub Bearing | Renault Clio 3 RS - Megane 3 / 4 RS
                                                                                                                                      Prevent low-frequency cabin droning, structural wheel hub play, and the degradation of your steering accuracy under heavy cornering loads. The heavy-duty Front Wheel Hub Bearing for Clio 3 RS, Megane 3 RS, and Megane 4 RS secures the structural alignment of your front axle...
                                                                                                                                      €123.42Price
                                                                                                                                      Entretoise conique de barre de liaison Clio 2 X65 CupEntretoise conique de barre de liaison Clio 2 X65 Cup
                                                                                                                                          Entretoise conique de barre de liaison Clio 2 X65 Cup Référence: SAF9001049
                                                                                                                                          €5.75Price
                                                                                                                                          Entretoise conique de barre de liaison Clio 2 X65 CupEntretoise conique de barre de liaison Clio 2 X65 Cup
                                                                                                                                              Entretoise conique de barre de liaison Clio 2 X65 Cup Référence: SAF9001049
                                                                                                                                              €5.75Price
                                                                                                                                              En Stock
                                                                                                                                              €18.47 Price
                                                                                                                                              En Stock
                                                                                                                                              €18.47 Price
                                                                                                                                              Axe de pivot de levier de vitesse Clio 2 Cup X65
                                                                                                                                                  Axe de pivot de levier de vitesse Clio 2 Cup X65 Référence : 7711155305
                                                                                                                                                  €18.47Price
                                                                                                                                                  Axe de pivot de levier de vitesse Clio 2 Cup X65
                                                                                                                                                      Axe de pivot de levier de vitesse Clio 2 Cup X65 Référence : 7711155305
                                                                                                                                                      €18.47Price
                                                                                                                                                      En Stock
                                                                                                                                                      €73.82 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €73.82 Price
                                                                                                                                                      Tripode cardan Clio Gr N
                                                                                                                                                          The Tripod Driveshaft Clio Group N , references A-7711129526 and  is a reinforced tripod driveshaft component designed for Renault Clio Group N competition applications. Developed for demanding motorsport use, this component is intended for vehicles subjected to increased drivetrain loads during rally and track use. A...
                                                                                                                                                          €73.82Price
                                                                                                                                                          Tripode cardan Clio Gr N
                                                                                                                                                              The Tripod Driveshaft Clio Group N , references A-7711129526 and  is a reinforced tripod driveshaft component designed for Renault Clio Group N competition applications. Developed for demanding motorsport use, this component is intended for vehicles subjected to increased drivetrain loads during rally and track use. A...
                                                                                                                                                              €73.82Price
                                                                                                                                                              Roulement différentiel côté grand cardan Boite TL4 Clio 3 RS
                                                                                                                                                                  Optimize the performance of your Clio 3 RS with the genuine Renault differential bearing on the large driveshaft side! <p style="margin:1rem 0px;color:#1f1f1f;font-family:'Google Sans', 'Helvetica Neue',...
                                                                                                                                                                  €55.55Price
                                                                                                                                                                  Roulement différentiel côté grand cardan Boite TL4 Clio 3 RS
                                                                                                                                                                      Optimize the performance of your Clio 3 RS with the genuine Renault differential bearing on the large driveshaft side! <p style="margin:1rem 0px;color:#1f1f1f;font-family:'Google Sans', 'Helvetica Neue',...
                                                                                                                                                                      €55.55Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €192.10 Price
                                                                                                                                                                      En Stock
                                                                                                                                                                      €192.10 Price
                                                                                                                                                                      Left Drive Shaft (Transmission) Renault Megane 2 RSLeft Drive Shaft (Transmission) Renault Megane 2 RS
                                                                                                                                                                          Do not let a failing transmission ground your sports car. Since the original manufacturer part is now discontinued, we have selected this high-quality re-manufactured left drive shaft (transmission) for Renault Megane 2 RS . Engineered to handle the torque of the F4RT engine, this brand new drive shaft perfectly replaces your worn component, eliminating...
                                                                                                                                                                          €192.10Price
                                                                                                                                                                          Left Drive Shaft (Transmission) Renault Megane 2 RSLeft Drive Shaft (Transmission) Renault Megane 2 RS
                                                                                                                                                                              Do not let a failing transmission ground your sports car. Since the original manufacturer part is now discontinued, we have selected this high-quality re-manufactured left drive shaft (transmission) for Renault Megane 2 RS . Engineered to handle the torque of the F4RT engine, this brand new drive shaft perfectly replaces your worn component, eliminating...
                                                                                                                                                                              €192.10Price
                                                                                                                                                                              Roulement différentiel côté petit cardan Boite TL4 Clio 3 RS
                                                                                                                                                                                  Roulement différentiel côté petit cardan Boite TL4 Clio 3 RS
                                                                                                                                                                                  €37.96Price
                                                                                                                                                                                  Roulement différentiel côté petit cardan Boite TL4 Clio 3 RS
                                                                                                                                                                                      Roulement différentiel côté petit cardan Boite TL4 Clio 3 RS
                                                                                                                                                                                      €37.96Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €187.78 Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €187.78 Price
                                                                                                                                                                                      Support pommeau Levier de vitesse Clio 2 Cup X65Support pommeau Levier de vitesse Clio 2 Cup X65
                                                                                                                                                                                          Support pommeau Levier de vitesse Clio 2 Cup X65 Référence : 7711155300
                                                                                                                                                                                          €187.78Price
                                                                                                                                                                                          Support pommeau Levier de vitesse Clio 2 Cup X65Support pommeau Levier de vitesse Clio 2 Cup X65
                                                                                                                                                                                              Support pommeau Levier de vitesse Clio 2 Cup X65 Référence : 7711155300
                                                                                                                                                                                              €187.78Price