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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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Gearbox Reverse Gear Unlock Cable Renault Sport Clio 3 X85 Cup SADEV ST75 (Ref: 7711160360)
Ensure the reliable operation of the reverse gear mechanism of your Renault Clio 3 X85 Cup equipped with the SADEV ST75 sequential gearbox with this genuine Renault Sport reverse gear unlock cable (Ref: 7711160360 ). A...
€195.66Price
Tuyau hydraulique embrayage coté recepteur Twingo RS R1 et R2
Véritable produit d'origine
€46.86Price
Roue de 1ere 36 dents (12x36) Megane N4 Référence: 7711167440
€308.45Price
Fourreau aluminium colonne de direction Clio 3 X85 Cup
Référence: 7711160153
€176.71Price
The SADEV Left Side Output Flange (references F1908350 / 7711160348 ) is the gearbox output element that ensures the essential connection between the differential and the driveshaft (Lobro type) of your left-hand transmission. A vital part of the SADEV ST75 sequential gearbox , it is homologated for the...
€583.44Price
Do not risk a catastrophic mechanical failure of your gearbox, severe whining noises during gear changes, or an input shaft misalignment that will prematurely destroy your brand-new clutch kit. The premium Roulement de guidage d'arbre primaire pour Renault Sport (Clio 2 RS, Clio 3...
€12.84Price
Roulement arbre primaire carter mécanique Megane 3 RS
€29.72Price
Do not let an approximate transmission compromise your stage times. This 56-tooth crown wheel for 11-tooth shafts is an official Renault Sport component, engineered by SADEV specifically for the Renault Clio 2 Group N equipped with the ST66 gearbox . As the exclusive distributor of SADEV parts for the Renault...
€820.75Price
Do not risk transmission slippage during hard acceleration, premature wear of your friction disc, or a catastrophic mechanical failure during aggressive gear changes on track. The premium uprated clutch pressure plate mechanism for the Renault Clio 3 RS and X85 Cup delivers...
€228.74Price
Arbre Secondaire 11 dents (pour couronne 56 dents) Clio Gr N Référence: 7711129543
€1,004.35Price
Entretoise de fixation de levier Clio 3 X85 Cup
Référence: 7711156164
€19.02Price
Hardware Overhaul Kit Gearbox SADEV ST90 Renault Sport Clio 3 R3 (Ref: 7711163607)
Ensure the preventive maintenance and reliability of your SADEV ST90 sequential gearbox in your Renault Clio 3 R3 with this genuine Renault Sport hardware overhaul kit (Ref: 7711163607 ). Including various seals, oil seals,...
€698.33Price
Ensure your transmission reliability with this genuine Renault Sport NTN cup . A key component of your drive shaft assembly, it is specifically designed for the Renault Clio 2 Cup (X65) , Clio 2 Group N , Clio 3 Cup (X85) , and Clio R3 . This official component guarantees perfect...
€7.32Price
Planétaire 26 dents petites cannelures Twingo R2
Référence: 7711163837
€194.20Price
Roulement de Roue Arrière Clio 3 RS et X85 Cup
€73.26Price
Boitier autobloquant petites cannelures Twingo R2
Référence: 7711163838
€656.59Price
Do not risk a massive grease spray over your high-performance front brake discs, sudden failure of your outer CV joint, or a forced retirement during a competitive rally stage. The premium Kit soufflet graisse et collier coté bol Clio 2 Gr N is the high-strength driveline...
€107.52Price
Tuyau entrée butée (nouveau diamètre)
€45.26Price
Couple 12X53 - petites canelures Twingo R2
Référence: 7711162863
€1,767.94Price
Protect your competition drivetrain with this genuine SADEV satellite pin . Essential for gearbox reliability, this OEM component is specifically engineered for Renault Clio 2 Gr.N , Twingo R2 , and Clio 3 X85 Cup . Do not risk a costly mechanical failure by using worn or non-certified parts. ...
€77.64Price
Soufflet de cardan droit coté palier Clio 3 RS
€84.01Price
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