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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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Kit embrayage Twingo RS et R1
Véritable kit embrayage origine
€257.28Price
Do not risk getting stranded on the road or during a rally stage due to a failing clutch control system. This genuine Renault clutch master cylinder is the only manufacturer part that guarantees a perfect seal and optimal resistance to the high pressures endured by your sports car's hydraulic system. Specifically engineered for the Renault Twingo RS as well...
€165.96Price
Butée embrayage "série" Twingo RS et R1
Référence: 7711162660
€74.12€112.30Regular price-34% offPrice
Butée embrayage modifiée Megane N4
Référence: 7711167162
Prévoir 2 Raccords en produits associés
€749.71Price
The AP RACING Clutch Mechanism (ref. 7711160633) is a high-performance part from the RENAULT SPORT catalog. Designed for the Renault Clio R3 and Renault Twingo R2 , it ensures precise and reliable power transmission for optimal sports driving.
€721.20Price
Disque d'embrayage 4 patins Megane N4 Référence : 7711167634
A l'unité
€462.72Price
The AP RACING 4-Paddle Clutch Disc (ref. 7711162981) is a high-performance part from the RENAULT SPORT catalog. Designed for the Renault Twingo R2 , it offers an ideal balance between performance and durability for competition.
€308.00Price
Volant moteur usiné et équilibré Twingo R2, 7711162689
€525.31Price
HELIX MOTORSPORT 4-Paddle Sprung Clutch Disc - Renault Clio 3 RS / X85 Cup
Optimize the transmission of your Renault Clio 3 RS or Clio 3 X85 Cup with this HELIX MOTORSPORT 4-paddle sprung clutch disc . Designed for increased performance and superior resistance, it is ideal for sporty use. Discover the...
€401.11Price
Volant moteur allégé pour Clio 2 Cup avec gestion Magneti Marelli Volant moteur pesant 3.2 Kgs
€470.96Price
En Stock
€118.56
Price
En Stock
€118.56
Price
Original RENAULT Hydraulic Clutch Release Bearing for Clio 3 RS & X85 Cup
Do not compromise the reliability and precision of your Renault Clio 3 RS 's clutch. This <span...
€118.56Price
Conduite Hydraulique D'embrayage pour Megane 3 RS. Pièce régulièrement changée lorsque vous avez un bruit d'embrayage meme au ralenti. Egalement appelé butée.
€148.46Price
Renault Mégane 3 RS Clutch Kit (Genuine)
Replace your worn clutch with this genuine Renault kit, designed specifically for the Mégane 3 RS (all versions). Ensures optimal transmission and durable performance. Essential for maintaining your sports vehicle's performance.
€277.74€396.77Regular price-30% offPrice
Lightened Flywheel TTV RACING - Clio 3 RS (4.4kgs)
Improved engine responsiveness for sharper accelerations.
Significant weight reduction for optimized performance on road and track.
€499.00Price
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
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
The SADEV Left Driveshaft (references F1908352 / 7711160447 ) is the main element of the left driveshaft, ensuring the link between the Lobro joint (gearbox side) and the wheel hub carrier . Designed to withstand intense torque efforts in motorsport , it is homologated for the Renault...
€450.43Price
Transform your sports car's engine character with this TTV Racing lightweight flywheel . Specifically designed for the Renault Clio 2 RS (172 and 182), this high-performance steel flywheel weighs in at just 3.3 kgs , offering a drastic reduction in rotational mass compared to the original for lightning-fast...
€449.00Price
Récepteur d'embrayage Megane 2 RS tous modèles y compris R26R Son changement est préconisé lors de tout changement d'embrayage et même désaccouplement moteur/boite.
€168.20Price
Optimize your racing transmission with the BJ100 Transmission Bell (23C Hub / 35 Spline Joint) specifically designed for the Clio Group N . This technical part, under reference 7711167493 , is the central element for ensuring power delivery to...
€324.79Price
Genuine Renault Sport Clio 3 X85 Cup Wheel Side CV Boot (Driveshaft Boot)
Don't let dust and debris damage your transmission! This genuine Renault Sport wheel side CV boot (ref. 7701473176) is essential for protecting the joint of your driveshaft on your Renault Clio 3 X85 Cup . Preserve the longevity of...
€86.59Price
Embrayage Complet Origine Clio RS toutes motorisations
€282.54Price
Maintain the reliability of your clutch system with this genuine Renault hydraulic line specifically designed for the Renault Megane 3 RS . This complete assembly includes the high-pressure hose and its pressure accumulator cylinder , ensuring precise and consistent gearbox control, even...
€153.52Price
Collier (coté bol) de cardan coté roue Clio 2 RS
Produit d'origine
€2.50Price
Graisse de cardan coté roue Clio 2 RS
Produit d'origine
€9.90Price
- Pack
- Pack
Transmission droite Twingo R2
€1,262.70€1,578.37Regular price-20% offPrice
- Pack
- Pack
Transmission gauche Twingo R2
€1,316.82€1,755.76Regular price-25% offPrice
Original Renault Megane 3 RS Right Driveshaft
Original Renault right driveshaft, for optimal transmission of your Megane 3 RS. Discover the compatible gearbox output oil seal at the bottom of the page for perfect sealing.
€482.88Price
Cardan gauche Megane 3 RS Véritable produit d'origine Renault
€482.88Price
Secure your transmission with the genuine SADEV secondary shaft nut , a critical component for the reliability of your Renault Clio 3 X85 Cup . Engineered to withstand the extreme stresses of motorsport, this nut ensures perfect gear retention during intensive shifting. As the exclusive SADEV parts distributor for Clio 2 Cup, Clio 3...
€38.75Price
The SADEV 12x58 Final Drive Kit (12-tooth Secondary Shaft F1908058 and 58-tooth Crown Wheel F1908059) is the ultimate transmission part for your Renault Clio 3 X85 Cup equipped with the **SADEV ST75** sequential gearbox. Choosing this final drive ensures maximum acceleration and...
€2,211.77Price
The SADEV 17-Tooth Secondary Shaft (references F9001002 / 0109001002 ) is the drive pinion for the 17/55 final drive ratio in your SADEV ST75 sequential gearbox . This piece is vital for transmitting engine power to the 55-tooth crownwheel and is homologated for the Renault Clio 2 X65 Cup ....
€928.99Price
Butée embrayage renforcée Helix Clio 16S et Williams
€36.00Price
Joint double lèvres sortie de cardan Twingo R2
Joint identique pour le coté gauche et droit
€21.77Price
The SADEV 55-Tooth Crownwheel (reference F9001012 ) is an essential component of the 17/55 final drive ratio in your SADEV ST75 sequential gearbox . This genuine part is crucial for gearing and must pair perfectly with the corresponding 17-tooth secondary shaft. It is primarily used on the Renault Clio 2 X65...
€1,031.42Price
Disque d'embrayage Helix organique amorti Clio 16S et Williams
€194.78Price
The SADEV 54-Tooth Crownwheel (reference F1908252 ) is an essential element of the final drive in your SADEV ST75 sequential gearbox . Designed to be assembled with the 15-tooth secondary shaft, this genuine part ensures precise and reliable gearing for the Renault Clio 3 X85 Cup . OPTIMIZ ACCESS is a...
€1,031.42Price
The 15-Tooth Secondary Shaft is a fundamental component of the SADEV ST75 sequential transmission in your Renault Clio 3 X85 Cup . Specifically designed for the 15/58 final drive , this part ensures the correct gear reduction of your gearbox. Marketed under references F19080551 and 0119080551 ,...
€928.99Price
Driveshaft Grease Renault Sport
Optimize the longevity and performance of your driveshafts with this high-performance Renault Sport grease. Designed for the Renault Megane N4 equipped with the Sadev gearbox, it ensures optimal lubrication and protection against wear. Essential for maximum reliability in competition.
€26.08Price
Soufflet de transmission coté boite Megane 3 N4
€26.38Price
Don't let a worn or noisy differential impact the traction and safety of your Renault Clio 3 RS . This genuine Renault assembled differential housing includes the differential, the 69-tooth crown wheel, and the crown wheel bolts, ensuring a reliable replacement that meets manufacturer specifications. You can also find the associated differential...
€404.56Price
The Renault Sport clutch master cylinder , reference 7711160250 , is a component of the hydraulic clutch system designed for the Renault Clio 3 RS , including Clio R3 and X85 Cup versions.
The clutch master cylinder converts the force applied to the clutch pedal into hydraulic pressure, allowing the clutch release system...
€114.83Price