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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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Circlips intérieur Ø105 Seeger Clio 4 X98 Cup
Référence 0100602076
€2.92Price
Vis Tbasse CHC M6-45 recoupée Clio R3
Référence: 7711160581
€8.09Price
Sur commande ou en cours de réappro
€16.37
Price
Sur commande ou en cours de réappro
€16.37
Price
Output Shaft Oil Seal (Double Lip) SADEV ST75 (0100205044)
Ensure optimal sealing of your transmission with this genuine Renault Sport output shaft oil seal (double lip). Designed for the Clio 2 and 3 Cup equipped with the SADEV ST75 gearbox, it prevents oil leaks and maintains your transmission's performance. Essential for maximum reliability in...
€16.37Price
Obturateur en bout d'arbre embrayage Clio R3
Référence: 7711162189
€134.16Price
Sur commande ou en cours de réappro
€4.63
Price
Sur commande ou en cours de réappro
€4.63
Price
Vis de fixation de recepteur d'embrayage (butée) Megane 3 RS
€4.63Price
Sur commande ou en cours de réappro
€559.51
Price
Sur commande ou en cours de réappro
€559.51
Price
Afficheur rapport engagé boite séquentielle SADEV ST75
Fourni sans faisceau
€559.51Price
Ressort de rappel de commande Twingo R2
Référence: 0100801027
€15.90Price
Sur commande ou en cours de réappro
€18.86
Price
Sur commande ou en cours de réappro
€18.86
Price
Vis de fixation boite sur moteur (longue) Clio 2 RS
€18.86Price
Sur commande ou en cours de réappro
€110.35
Price
Sur commande ou en cours de réappro
€110.35
Price
Kit soufflet de transmission coté roue Megane 2 RS
Véritable produit d'origine
€110.35Price
Sur commande ou en cours de réappro
€6.86
Price
Sur commande ou en cours de réappro
€6.86
Price
Eliminate all axial play on your ST66 SADEV gear control system ! This shouldered linkage spacer (P/N: F0047029 ) is a crucial wear part that ensures the precise alignment and retention of the control rod linkage (including the Quickshift model) on your Renault Clio 2 Gr N . A worn or...
€6.86Price
Sur commande ou en cours de réappro
€11.89
Price
Sur commande ou en cours de réappro
€11.89
Price
- New
- New
Avoid oil leaks around your transmission with the SADEV 45x62x10 double lip oil seal , reference 0205011C . This sealing component is designed for the Renault Clio 2 V6 Trophy equipped with a SADEV transmission.
With...
€11.89Price
- New
- New
Avoid oil leaks and loss of sealing on your SADEV gearbox with this nitrile O-ring Ø41.2 x 3 mm , sold under reference 0201027C . This sealing component is intended for the Renault Clio 2 V6 Trophy and is suitable for the...
€2.63Price
Sur commande ou en cours de réappro
€2.51
Price
Sur commande ou en cours de réappro
€2.51
Price
- New
- New
Avoid the risk of oil leaks and loss of sealing on your competition transmission with the SADEV nitrile O-ring 82 x 3 mm , reference 0201028C , designed for the Renault Clio 2 V6 Trophy .
This SADEV sealing...
€2.51Price
Sur commande ou en cours de réappro
€3.16
Price
Sur commande ou en cours de réappro
€3.16
Price
- New
- New
Do not risk oil leakage from your sequential gearbox during intensive track sessions. The SADEV original fill plug seal (Part Number: 5002017C) is designed for the Renault Clio 2 V6 Trophy and helps maintain proper sealing around the gearbox...
€3.16Price
Sur commande ou en cours de réappro
€1.78
Price
Sur commande ou en cours de réappro
€1.78
Price
Ensure your drivetrain's integrity with this genuine Renault Sport M10x70 CHC screw (Reference: 7711064285 ). Specifically calibrated for SADEV ST75 sequential gearbox assembly, it provides optimal structural anchoring into the engine block. This critical component is sold individually; only one unit is required to finalize...
€1.78Price
Sur commande ou en cours de réappro
€7.97
Price
Sur commande ou en cours de réappro
€7.97
Price
Protect your Renault Clio 2 RS gearbox with the genuine Renault secondary shaft oil deflector . This essential part ensures optimal lubrication and prevents oil leaks, guaranteeing the longevity and performance of your transmission. Crucial for maintaining your gearbox's integrity, this OEM component helps you avoid costly and unexpected repairs.
€7.97Price
Sur commande ou en cours de réappro
€21.95
Price
Sur commande ou en cours de réappro
€21.95
Price
Sur commande ou en cours de réappro
€84.01
Price
Sur commande ou en cours de réappro
€84.01
Price
Sur commande ou en cours de réappro
€5.78
Price
Sur commande ou en cours de réappro
€5.78
Price
Carter embrayage Boite Crabot Clio Gr N 7711129471
€505.25Price
Sur commande ou en cours de réappro
€132.78
Price
Sur commande ou en cours de réappro
€132.78
Price
Collection rondelles précontrainte arbre primaire boite JC5
€132.78Price
Sur commande ou en cours de réappro
€103.91
Price
Sur commande ou en cours de réappro
€103.91
Price
Don't let wear compromise your gearbox's performance. Opt for this collection of genuine RENAULT shims , specifically designed for precise adjustment of the secondary shaft preload on JC5 gearboxes . Essential for your Renault Clio 2 RS or Clio Williams , this kit ensures an extended transmission lifespan and...
€103.91Price
- Pack
- Pack
- Pack
Guide de poussoir équipé Twingo R2
Référence: 7711163851
€329.29Price
- Pack
- Pack
Sur commande ou en cours de réappro
€4.75
Price
Sur commande ou en cours de réappro
€4.75
Price
Rondelle anti desserrage arbre primaire Twingo RS et R1
€4.75Price
Kit Refection de boite JC5 (convient egalement a d'autres JC5) Contient les synchro et les roulements
€460.31Price
Soufflet de Cardan coté roue Clio Gr N
Produit uniquement commercialisé en kit dorénavant
Voir plus bas les produits associés
€9.23Price
Huile de Boite ELF NFP 75w80 Bidon de 1L. Lubrifiant 100% Synthèse. Pour boîtes et ponts. Pour conditions d’usage hautes performances et compétition. 0% de perte au cisaillement. Amélioration du rendement. Huile conseillée pour les Boites des Megane 3 RS (Capacité de la boite 2.4L) Possibilité de vous fournir en bidons de 5L
€17.50Price
Biellette de boite de vitesse Clio 2 RS et Gr N. Véritable pièce d'origine
€67.75Price
Sur commande ou en cours de réappro
€159.85
Price
Sur commande ou en cours de réappro
€159.85
Price
Kit synchro JC avec synchro 1-2 ancienne génération
€159.85Price