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Couronne 63 dents ( 12 / 63 ) équipée Clio Gr N Référence: F19030231
€898.58Price
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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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The SADEV Right Drive Flange (F1903162) is the original SADEV part that ensures the final transmission of engine torque from your SADEV ST66 gearbox to the right driveshaft. A specific and essential component for the Renault Clio 2 Group N Phase 1 .
A...
€934.62Price
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
Arbre (barreau) nu transmission gauche Twingo R2 Référence: 7711167603
€695.47Price
Don't let poor gear ratios ruin your stage times. This official 52-tooth crown wheel , manufactured by SADEV for Renault Sport , is the key component for your 11/52 final drive . Specifically designed for the Renault Clio 2 Gr.N equipped with the ST66 gearbox , it...
€565.21Price
Arbre (barreau) nu transmission droit Twingo R2 Référence: 7711167604
€518.09Price
En Stock
€988.36
Price
En Stock
€988.36
Price
The SADEV 12-Tooth Secondary Shaft (7711129468 / F19030201) is a core component of your SADEV ST66 gearbox. This original SADEV part ensures the vital connection to the differential via the 58-tooth crown wheel for the specific 12x58 final drive .
The replacement of a damaged...
€988.36Price
Soufflet de Cardan Coté BV Phase 2 Clio Gr N Référence: 7711129525
€16.66Price
Do not let a fragile transmission compromise your rally performance. This 11-tooth secondary shaft , specifically designed to mate with a 52-tooth crown wheel , is an official Renault Sport competition part manufactured by SADEV . Destined for the ST66 gearbox of the Renault Clio 2 Group N ,...
€1,075.99Price
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Transmission droite Twingo R2 EVO
€1,414.73€1,768.42Regular price-20% offPrice
Do not risk a mechanical failure and retirement during your next stage. This 56-tooth crown wheel for 12-tooth shafts is an official Renault Sport competition part, engineered by the experts at SADEV for the Renault Clio 2 Group N equipped with the ST66 gearbox . As the exclusive distributor ...
€758.77Price
Collier soufflet de cardan Clio 2 Cup X65
Référence : 7711155419
€1.42Price
Collier soufflet sur tulipe diam 93.5 Clio Gr N
Référence: 77 11 156 805
€16.52Price
Do not risk an oil leak or a complete transmission failure due to neglected hardware. This M8x20 CHC bolt (Grade 10.9, raw finish) is an official Renault Sport component, manufactured by SADEV . Specifically designed for securing the differential cover on the ST66 gearbox of the Renault Clio 2...
€0.79Price
Couple 12X57 court - grosses cannelures Twingo R2 Référence: 7711167609
€1,746.37Price
En Stock
€41.45
Price
En Stock
€41.45
Price
Véritable biellette quickshift permettant de reduire le mouvement lors du passage des vitesses.
Pieces compatibles avec les super 5 Gt Turbo, Clio 16s et Williams et Clio 2 RS
Véritable piece officielle historique
Montage Rapide en lieu et place
€41.45Price
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
Pochette revision changement de couple Clio R3
Référence: 7711163710
€370.03Price
Collection de soufflet de cardan gauche coté boite Clio 2 RS
€86.59Price
Raccord coudé Formule Renault 2.0
Référence: 7705030272
€33.85Price
Transmission Gauche Clio 2 X65 Cup
Référence: 7711155141
€1,233.28Price
Palier de transmission droit Megane 3 RS et N4
€47.04Price
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
Ensure your shift reliability with the SADEV double pawl spring (references 0801026 and 0100801026 ). This genuine part is a critical component for the proper functioning of the locking mechanism on your ST75-14 sequential gearbox . Designed for the Renault Clio 2 X65 Cup , Clio 3 X85 Cup , and...
€7.24Price
Bouchon de vidange de boite de vitesse M16x150 Clio 3 RS, Clio 2 RS, Megane 3 RS Livré sans le joint
€3.80Price
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
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
En Stock
€3.36
Price
En Stock
€3.36
Price
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
The SADEV Wheel Housing (Hub Carrier) (references 7700108002 , 7711155366 , 1008025 ) is an essential part for ensuring the fastening and reliability of the driveshaft at the wheel end on your competition vehicle . It is used notably on the Renault Clio 2 X65 Cup equipped with the SADEV...
€130.96Price
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