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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: Hardware (Screws, nuts...)
Protect your competition transmission with this left-hand gearbox side CV boot for the Clio R3 (reference 7711160753 ). This specific Renault Sport component is essential for maintaining the seal of your gearbox and ensuring optimal...
€25.91Price
Don't let a simple failure compromise the driving precision of your Clio 2 RS . This right-hand driveshaft oil seal (joint spi) is a genuine RENAULT original part , guaranteeing renewed **reliability and performance**. Essential for the sealing of your gearbox, it maintains the oil level and protects your...
€26.29Price
Pivot surmoulé Clio 2 RS et Gr N
Point d'appui pour le mouvement de la fourchette de boite
€4.18Price
The Sadev F1903052 protection guard is an essential safety component for the reliability of the ST66 dog-ring gearbox in your Renault Clio 2 Gr N . It protects vital differential components against debris and external shocks, thus avoiding costly damage to the transmission . ...
€58.50Price
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
Bouchon de vidange de boite de vitesse M16x150 Clio 3 RS, Clio 2 RS, Megane 3 RS Livré sans le joint
€3.80Price
Rondelle mince de calage ép. 0,50 - pour rlt 6205 - 6304
€21.80Price
Do not risk a catastrophic transmission fluid leak, sudden failure of your left-hand inner CV joint tripod, or the highly expensive replacement of a complete genuine Renault Sport driveshaft assembly. The Kit soufflet de transmission cardan gauche coté boite Megane 3 RS et...
€85.96Price
Do not risk a loose clutch pedal sticking to the floorboard during quick shifts, a total locking out of gear changes at high RPM, or an asymmetrical clamping pressure that will destroy your manual JC5 gearbox. The premium heavy-duty Fourchette d'embrayage et butée d'embrayage Clio 2...
€94.62Price
Entretoise plastique pour selecteur Megane 3 RS
€0.46Price
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
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
Joint etancheité capot de 5eme Clio RS et Gr N
€7.51Price
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
Cale de butée embrayage série Twingo R2
Référence: 7711162840
€55.32Price
Raccord coudé Formule Renault 2.0
Référence: 7705030272
€33.85Price
Never underestimate the importance of small parts! This SADEV reverse gear shift fork circlip (P/N: 0601002 ) is an essential safety component for your ST66 dog-ring gearbox in the Renault Clio 2 Gr N . It ensures the precise retention of the reverse gear shift fork , preventing any misalignment or jamming....
€1.44Price
Secure your front suspension with this set of 4 genuine Renault front wheel bearing mounting bolts . Specifically designed for the Renault Megane 2 RS , Clio 3 RS , Megane 3 RS , and Megane 4 RS , this kit is essential to guarantee the perfect fitment of your wheel hub.
...
€39.80Price
Vis CHC M8-30 cl:8.8 zinguée noir Twingo R2
Référence: 7711162293
€1.55Price
Arrêt de gaine commande vitesses Megane 3 RS et N4
Véritable produit d'origine
€107.80Price
Original RENAULT driveshaft nut compatible with the Renault Megane 2 RS and Renault Clio 3 RS . An essential safety element for your transmissions. Discover related complementary products below.
€17.27Price
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
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
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
Joint de bouchon de remplissage d'huile boite
€8.03Price
ELF Tranself NFX SAE 75W Gearbox Oil – 1 Litre
The ELF Tranself NFX SAE 75W gearbox oil is a synthetic transmission lubricant designed for manual gearboxes requiring...
€18.79Price
Sur commande ou en cours de réappro
€16.80
Price
Sur commande ou en cours de réappro
€16.80
Price
Do not risk a fatal bearing displacement at the heart of your racing transmission. This official Renault Sport SB120 retaining clip (Manufacturer Part Number: 7711162216 ) is the only certified snap ring designed to securely lock the differential...
€16.80Price
Sur commande ou en cours de réappro
€36.60
Price
Sur commande ou en cours de réappro
€36.60
Price
Do not risk incorrect mechanical play that would prematurely destroy your racing transmission. This official Renault Sport differential shimming washer (Manufacturer Part Number: 7711162220 ), sold individually , is the essential genuine...
€36.60Price
Sur commande ou en cours de réappro
€1.62
Price
Sur commande ou en cours de réappro
€1.62
Price
Secure your SADEV ST75 sequential gearbox assembly with this genuine Renault Sport M10x50 CHC screw (Reference: 7711064819 ). Specifically engineered for engine-to-gearbox coupling on competition chassis, it guarantees the essential structural strength required under extreme mechanical stress. Sold individually; two units are...
€1.62Price
Sur commande ou en cours de réappro
€110.35
Price
Sur commande ou en cours de réappro
€110.35
Price
Do not let a simple tear immobilize your sports car or destroy your transmission. This right-hand inner driveshaft boot (gearbox side) is a genuine Renault (OEM) part , specifically designed to withstand the thermal and mechanical stresses of the Renault Clio 4 RS . Choosing manufacturer quality over aftermarket parts ensures a perfect seal...
€110.35Price