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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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Joint Spy d'origine permettant l'etanchéité entre la boite et le cardan coté droit pour Megane 2 RS
€41.18Price
Vis CHC M8 x 20 cl 8.8 bichro pour boite crabot Clio 2 RS Gr N Référence: 0301018
€0.61Price
Anneau d'arret de cardan phase 2 (avec palier) pour clio Gr N 7703066381
€5.14Price
Pochette de révision BV Twingo R2 Référence: 7711163858
€191.87Price
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5.4kg Genuine Replacement Flywheel for Renault Clio 2 RS
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€480.00Price
Volant Moteur allégé pour Megane 2 RS
Convient pour l'embrayage d'origine ou tout autre embrayage renforcé compatible avec le volant moteur d'origine.
Parfait en remplacement du Bimasse d'origine Poids: 5.7
Le remplacement d'un volant moteur bimasse par un monomasse peut engendrer des vibrations.
€526.61Price
Joint de liaison boite cardan gauche Megane N4
€8.88Price
Câble de verrouillage MAR Lg 1560 mm Clio 2 Cup X65
€181.39Price
Bagues de liaison levier tringlerie Clio 2 RS
Livré sans l'écrou présent sur la photo
€10.02Price
Do not risk a spongy clutch pedal at the end of a hard track day session, grinding gear engagements at high RPM, or a complete failure of your hydraulic line under heavy acceleration. The premium HEL Performance stainless steel braided aviation clutch line for the Renault Megane 2...
€56.99Price
This HEL Performance braided clutch hose is specifically designed to replace the original hydraulic line on your Renault Mégane 3 RS. By eliminating the pressure accumulator, it provides a more direct clutch pedal response and increased reliability.
€56.64Price
Butée sphérique sur fourchette pour cable renforcé Clio Gr n et X65 Cup
€50.22Price
Butée Embrayage (récepteur) d'origine Megane 4 RS boite méca
€300.24Price
Rondelle mince de calage Ø 51 x 40 ép. 0,20
€9.17Price
Do not compromise your 5th gear assembly! This SADEV Anti-Rotation Adjustment Shim (F1903032) is a vital original SADEV part for locking the threaded insert onto the shaft of your SADEV ST66 gearbox.
Its role is to prevent the accidental rotation of the 5th gear...
€3.50Price
Left Differential Sealing Cover SADEV ST66 (F1903055)
Ensure the sealing of your SADEV ST66 gearbox with this genuine SADEV cover. Designed for the Clio Gr N, it accommodates the drive shaft oil seal. Essential to prevent leaks and maintain your transmission's performance.
€201.08Price
Don't compromise your **Renault Twingo 2 RS** or **Twingo R1**'s transmission! This **original RENAULT flywheel** is essential for a perfect connection between the engine and gearbox. A faulty flywheel can damage your clutch and degrade driving comfort. Choose the reliability and precision of an original part. You'll find associated complementary products at the bottom of this page.
€346.48Price
Joint torique nitrile Ø 110 x 3 Clio Gr N Référence: 0201057
€2.03Price
Conduite hydraulique avant récepteur Clio 3 RS
€97.92Price
Conduite hydraulique sortie emetteur Clio 3 RS
€97.92Price
Contacteur début course embrayage Megane 3 RS et N4
Compatible également Trafic 3, Kangoo 2, Master 3, Laguna 3
Référence: 253250005R
€19.40Price
Flexible / Durite aviation conduite embrayage Clio 3 RS
Se monte apres ce produit et non directement sur l'emetteur
Conduite sortie emetteur Clio 3 RS
Coté butée, prévoir le raccord visible dans les produits associés ci dessous
€49.99Price
Mécanisme d'embrayage Megane N4 Référence: 7711167140
€1,369.68Price
Huile de boite NFX bidon de 5L
remplace dès à présent l’huile NFJ et la NFP
Développé pour les boites de vitesse manuelles fortement sollicités
€85.08Price
Contacteur fin course embrayage Megane 3 RS et N4
Compatible également Trafic 3, Kangoo 2, Master 3, Laguna 3
Référence: 253250007R
€19.40Price
Bidon de 1L De lubrifiant Boite et Pont Motul Gear LS Lubrifiant Compétition 100% synthèse. Spécialement développé pour les véhicules haute performance et de compétition : Circuit, Rallye, Rallye Raid, Transmission des véhicules électriques… Pour tous ponts hypoïdes avec glissement limité, boîte de vitesses avec différentiel à glissement limité intégré, transmissions mécaniques, boites de...
€19.90Price
- Pack
- Pack
Ensure the critical sealing of your transmission with this genuine Renault gearbox output oil seal . Perfectly suited for the Renault Twingo 2 RS , this seal provides a hermetic barrier between the gearbox and your left or right driveshaft . Don't let an oil leak compromise your gear set:...
€36.77Price
- Pack
- Pack
Protect your transmission’s integrity with this genuine Renault driveshaft oil seal . Specifically designed for the Renault Clio 3 RS , it ensures a perfect seal between the gearbox and the nearside (left) driveshaft . Don't risk a costly mechanical failure: using an original part is the...
€36.77Price
M10 x 20 Hex Head Bolt – SADEV Clio 2 RS Group N
The SADEV hex head bolt M10 x 20, reference F0044009 , is a specially machined fastener listed for the Renault Clio 2 RS Group N equipped with a...
€13.31Price
Flasque support potentiomètre Twingo R2
Référence: 7711163829
€64.20Price
The AP RACING Hydraulic Clutch Release Bearing (ref. 7711160788) is a high-performance part from the RENAULT SPORT catalog. Designed for the Renault Clio R3 and Renault Twingo R2 , it ensures smooth and precise clutch operation for optimal sports driving.
€658.85Price
Ensure your clutch system's reliability with the genuine Renault Sport AP Racing clutch release bearing outlet hose . Specifically engineered for Twingo R2 and Clio R3 models equipped with the latest generation AP Racing bearings , this critical component guarantees precise and consistent...
€48.82Price
The AP RACING 6-Paddle Clutch Disc (ref. 7711162566) is a high-performance part from the RENAULT SPORT catalog. Designed for the Renault Clio R3 , it offers optimal power transmission for an unparalleled sporty driving experience.
€329.00Price
The AP RACING clutch release bearing shim (ref. 7711160878 ), from the RENAULT SPORT catalog, is an essential part to optimize clutch operation on your Renault Clio R3 equipped with the SADEV sequential gearbox. It ensures precise and reliable clutch engagement.
€107.70Price