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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: Bearings
Do not risk a total mechanical failure of your gear stack in the middle of a race for a simple worn-out retaining ring. This official genuine Renault Sport / SADEV secondary shaft end circlip (Catalogue Reference: 7711162214 ) is the critical locking...
€1.13Price
Sur commande ou en cours de réappro
€3.61
Price
Sur commande ou en cours de réappro
€3.61
Price
Do not risk a totally preventable gear oil leak ruining your next rally stage or circuit session. This official genuine Renault Sport / SADEV clutch shaft end blanking plug O-ring (Catalogue Reference: 7711162188 ) is the vital sealing component required to...
€3.61Price
Sur commande ou en cours de réappro
€15.06
Price
Sur commande ou en cours de réappro
€15.06
Price
Do not risk destroying your dog-engagement gearbox in the middle of a stage for a simple worn-out guidance component. This official genuine Renault Sport / SADEV clutch shaft end bearing (Catalogue Reference: 7711162187 ) is the masterpiece mechanical part...
€15.06Price
Sur commande ou en cours de réappro
€1.12
Price
Sur commande ou en cours de réappro
€1.12
Price
Do not risk an irremediable mechanical failure during gear changes in a race for a simple fatigued retaining ring. This official genuine Renault Sport / SADEV clutch shaft end SB15 circlip (Catalogue Reference: 7711162186 ) is the vital safety component...
€1.12Price
Sur commande ou en cours de réappro
€2.86
Price
Sur commande ou en cours de réappro
€2.86
Price
Do not ruin your next rally stage or circuit session due to a totally preventable transmission failure. This official genuine Renault Sport / SADEV clutch shaft snap ring (Catalogue Reference: 7711162185-0109908008 ) is the essential safety retaining ring...
€2.86Price
Sur commande ou en cours de réappro
€1.67
Price
Sur commande ou en cours de réappro
€1.67
Price
Do not risk a catastrophic gearbox failure during a stage for a simple fatigued snap ring. This official genuine Renault Sport / SADEV 1st gear shaft lock washer circlip (Catalogue Reference: 7711162183-0100601005 ) is the ultimate safety component required...
€1.67Price
Sur commande ou en cours de réappro
€79.99
Price
Sur commande ou en cours de réappro
€79.99
Price
Do not risk a catastrophic loosening of your gear assembly stack in the middle of a rally stage. This official genuine Renault Sport / SADEV 1st gear shaft nut (Manufacturer Part Number: 7711162181 ) is the essential safety component required to lock the...
€79.99Price
Sur commande ou en cours de réappro
€73.49
Price
Sur commande ou en cours de réappro
€73.49
Price
Do not risk a catastrophic loosening of your gear assembly stack in the middle of a rally stage. This official genuine Renault Sport / SADEV 1st gear shaft nut (Manufacturer Part Number: 7711162181 ) is the essential safety component required to lock the...
€73.49Price
Sur commande ou en cours de réappro
€86.88
Price
Sur commande ou en cours de réappro
€86.88
Price
Secondary Shaft Bearing NJ305 ECP SADEV ST66 (F1903026)
Ensure the optimal performance of your SADEV ST66 gearbox with this genuine Renault Sport NJ305 ECP secondary shaft bearing. Designed for the Clio Gr N, it guarantees precise and reliable operation. Essential for maintaining your transmission's performance.
€86.88Price
Sur commande ou en cours de réappro
€97.60
Price
Sur commande ou en cours de réappro
€97.60
Price
Do not risk a destructive radial play or a gearbox lock-up in the middle of a stage. This official genuine Renault Sport / SADEV 1st gear roller bearing (Manufacturer Part Number: 7711156724 and SADEV internal reference:...
€97.60Price
Roulement de différentiel Twingo RS et R1 Vendu à l'unité, 2 sont nécessaires
€33.35Price
Roulement de différentiel Clio R3T
Référence: 0105001002
€136.76Price
Roulement arbre secondaire Clio R3T
Référence: 0109046204
€136.86Price
Sur commande ou en cours de réappro
€46.42
Price
Sur commande ou en cours de réappro
€46.42
Price
Roulement ligne secondaire carter mécanique Megane 3 RS
€46.42Price
Sur commande ou en cours de réappro
€51.79
Price
Sur commande ou en cours de réappro
€51.79
Price
Roulement ligne secondaire carter embrayage Megane RS
€51.79Price
Sur commande ou en cours de réappro
€141.47
Price
Sur commande ou en cours de réappro
€141.47
Price
Roulement de roue avant Clio 2 RS 182 Chassis sport
Produit d'origine
€141.47Price
- Pack
- Pack
- Pack
Sur commande ou en cours de réappro
€4.75
Price
Sur commande ou en cours de réappro
€4.75
Price
Rondelle anti desserrage arbre primaire Twingo RS et R1
€4.75Price
Kit Refection de boite JC5 (convient egalement a d'autres JC5) Contient les synchro et les roulements
€460.31Price