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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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Cale réglage ep: 1.80 boite PK6 Megane 3 RS et N4
Référence: 8200265691
€3.85Price
Axe de selection Assemblé renforcé Megane N4
Référence: 7711167136
€523.57Price
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
Cale réglage ep: 2.16 boite PK6 Megane 3 RS et N4
Référence: 8200265697
€3.85Price
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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
Cale réglage ep: 1.86 boite PK6 Megane 3 RS et N4
Référence: 8200265692
€3.85Price
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Machined 1-2 Gear Fork SADEV ST66 (F02027022)
Optimize the gear changes of your SADEV ST66 gearbox with this machined 1-2 gear fork from Renault Sport. Designed for the Clio Gr N, it ensures increased precision and reactivity. Essential for maintaining your transmission's performance.
€655.20Price
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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
Cale réglage ep: 2.10 boite PK6 Megane 3 RS et N4
Référence: 8200265696
€3.85Price
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
3rd and 4th gears are the most critical ratios in racing. This machined 3rd-4th gear shift fork SADEV (P/N: F0027026 ) is essential for guaranteeing precise and rapid shifts on your ST66 dog-ring gearbox in the Renault Clio 2 Gr N . A fatigued or deformed fork causes a major risk of unintentional disengagement ...
€244.60Price
Cale réglage ep: 2.04 boite PK6 Megane 3 RS et N4
Référence: 8200265695
€3.85Price
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Levier de vitesse Racing CAE SHIFTER Twingo 2 RS
€1,169.75Price
Cale réglage ep: 1.92 boite Megane 3 RS et N4
Référence: 8200265693
€3.85Price
Cale réglage ep: 1.74 boite Megane 3 RS et N4
Référence: 8200265690
€3.85Price
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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
Axe centrage carters Megane 3 RS et N4
Référence: 8200554273
€2.20Price
Genuine Renault 5th Gear Idler Gear (TL4 Gearbox Clio 3 RS) - Ensure the optimal performance of your gearbox with this original Renault part, offered at an advantageous price. Discover related products at the bottom of the page.
€155.50Price
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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
Douille centrage Megane 3 RS et N4
Référence: 8200862719
€3.38Price
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
Price
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
Onduflex Spring Washer 8 x 17 x 0.8 mm
The Onduflex spring washer 8 x 17 x 0.8 mm , reference 7711167164 , is a mechanical fastening component designed for assemblies requiring...
€0.25Price
Raccord adaptation fléxible sur emetteur embrayage Megane N4 Ref: 7711167117
€150.53Price
Restore the exact gear ratio and longevity of your Renault Clio 3 RS 's TL4 gearbox . This 6th gear fixed gear (30 teeth) is an essential genuine Renault part for the proper functioning and reliability of the top gear. Replacing it with a new part guarantees the absence of noise and maintains the mechanical precision of your sport transmission .
€185.60Price
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
Raccord 2 voies pour reniflard de boite
Référence: 7705030130
€5.27Price
Do not sacrifice the grip and traction of your Clio 2 X65 Cup . Without this SADEV Belleville Washer Galbe 1 (Ref. F9001096 ) in perfect condition, you lose the essential preload of your SADEV limited slip differential , leading to a loss of efficiency on...
€62.56Price
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
Chape commande BV avec vis Clio R3 Access et Maxi Référence: 7711160344
€92.05Price
Joint Cuivre D22x29 ep: 1.5 Megane N4
Référence: 7711167328
€1.82Price
The precision of your ST75-14 sequential gearbox lies in the details. Without the correct SADEV Belleville Washer F=0.80 (Ref. F9004242 ), you lose the ideal functional clearance , leading to abnormal wear and threatening the reliability of your Clio 2 X65 Cup ...
€62.56Price
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
