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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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Ensure your chassis precision with this Right-Hand Thread Uniball Joint (reference 7711156407 ), a key component for competitive racing. Specifically validated for Renault Clio 2 Cup , Clio 3 Cup , Clio R3 , and Twingo R2 , it eliminates steering vagueness. Do not...
€52.69Price
Câble commande de vitesse "sélection" Twingo R1 Référence: 7711167408
€206.06Price
Câble commande de vitesse "passage" Twingo R1 Référence: 7711167407
€206.06Price
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
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€19.17
€25.00
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En Stock
€19.17
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Gear Shift Lever Rotation Bushing - Renault Clio 2 RS (Unit)
Reduces gear shift lever play for more precise shifts.
Improves driving feel and responsiveness of your Clio 2 RS.
€19.17€25.00Regular price-€5.83 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
Vis CHC M5-30 cl:8.8 zingué noir Twingo R2
noirRéférence: 7711162292
€0.36Price
Vis CHC M7-20 cl:10.9 zingué noir Twingo R2
noirRéférence: 7711162294
€2.24Price
Vis CZHC M8-25 cl:10.9 zingué
noirRéférence: 7711162299
€0.95Price
Disque d'embrayage 4 patins Megane N4 Référence : 7711167634
A l'unité
€462.72Price
Ressort de bague de marche arrière Megane 3 RS et N4
Référence: 8201070311
€2.71Price
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
Do not risk a missed gear change during an intense track day session, getting stuck in neutral during heavy acceleration, or enduring a loose and vague shifter feel on your daily drive. The genuine Renault Megane 4 RS gear selector shifter cable set , carrying the official...
€332.22Price
Radically enhance your performance with this complete racing shifter for the Renault Clio 3 RS. Designed for optimal precision and speed, it reduces gear shift times and offers a more ergonomic driving position.
€599.00Price
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CAE RACING Racing Shifter for Renault Megane 2 RS
High-performance CAE RACING racing shifter. Optimized position, increased precision, and ultra-fast gear changes for Megane 2 RS. Specific cables included. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
€1,350.80Price
- Pack
- Pack
CAE RACING Racing Shifter for Renault Clio 3 RS
High-performance CAE RACING shifter for Clio 3 RS. Optimized position, increased precision, and ultra-fast gear changes. Specific cables included. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
€1,255.46Price
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
- Pack
- Pack
Levier de vitesse Racing CAE SHIFTER Twingo 2 RS
€1,169.75Price
- Pack
- Pack
CAE RACING Racing Shifter for Renault Megane 4 RS
High-performance CAE RACING shifter. Optimized position, extreme precision, and instantaneous gear changes. Customizable chassis and knob colors. Important: Specific shift cables required for Megane 4 RS Trophy-R installation. Discover complementary products at the bottom of the...
€1,375.45Price
Volant moteur allégé pour Clio 2 Cup avec gestion Magneti Marelli Volant moteur pesant 3.2 Kgs
€470.96Price
- Pack
- Pack
CAE RACING Racing Shifter for Renault Megane 3 RS
High-performance CAE RACING shifter. Optimized position, increased precision, and ultra-fast gear changes. Customizable chassis and knob colors. Discover complementary products at the bottom of the page.
€1,051.76Price
Pommeau de Levier CAE Shifter Couleur au choix Sur la photo, les couleurs sont de gauche à droite: Noire, Antracite, Bleu, Rouge, Gris, Orange, Blanc, Vert
€56.46Price
En Stock
€118.56
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En Stock
€118.56
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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
Chape commande BV avec vis Clio R3 Access et Maxi Référence: 7711160344
€92.05Price
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
Entretoise conique de barre de liaison Clio 2 X65 Cup
Référence: SAF9001049
€5.75Price
Douille de barre de liaison Clio 2 X65 Cup
Référence: SAF9001048
€9.88Price
Axe de pivot de levier de vitesse Clio 2 Cup X65
Référence : 7711155305
€18.47Price
Flanc de levier de vitesse Clio 2 Cup X65
Référence : 7711155303
€49.30Price
Support pommeau Levier de vitesse Clio 2 Cup X65
Référence : 7711155300
€187.78Price
Secure your suspension precision with this high-performance Left-Hand Thread Uniball Joint , part number 7711156408 . Essential for Rally configurations, it is specifically used on the Renault Clio R3 and Renault Twingo R2 . Do not let minor mechanical play compromise your stage...
€87.13Price
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
Support commande BV sur colonne Twingo R2 7711162755
€227.11Price
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
