

SADEV 3rd Gear Ratio 18/28 for ST75-14 Renault Clio 3 Cup
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Do not break your momentum in the heat of acceleration. The SADEV 3rd gear ratio 18/28 is the key element to ensure a perfect transition on your ST75-14 sequential gearbox. As the exclusive SADEV distributor for the Renault Clio 3 Cup, Optimiz Access offers this essential genuine part to keep your engine at the peak of its power curve and prevent any RPM drop in mid-gear.
The danger of an unsuitable 3rd gear ratio on your Clio 3 Cup
Third gear is often the most utilized ratio on the track. By neglecting the precision of the SADEV 3rd gear ratio 18/28, you risk watching your competitors pull away during re-acceleration phases. A worn sprocket or a non-optimized ratio leads to a loss of traction and an RPM drop that directly penalizes your top speed. Without this part calibrated for the ST75-14, your sports vehicle will never express its full potential.
Optimiz Access Exclusivity: Your Guarantee of Performance
It is crucial to remember that Optimiz Access is the exclusive distributor of SADEV products for the Renault Clio 3 Cup, as well as for the Clio 2 (Gr N / Cup) and Twingo R2 models. Purchasing this 18/28 gear ratio from us ensures perfect compatibility with your original SADEV gearing. Not using official parts exposes your transmission to premature failure and accelerated wear of the dog rings.
Technical expertise and maintenance of your ST75-14 gearbox
- Why choose the 18/28 ratio? It was designed specifically for the Clio 3 Cup to provide linear acceleration, ideal for fast and technical circuits.
- Where can I have my SADEV gears installed? Our workshop, specialized in sports vehicle maintenance, welcomes you in Northern France, near Lille, Valenciennes, and Arras.
- Need urgent delivery? We understand the requirements of competition and ship this 3rd gear ratio worldwide with exemplary speed.
Secure your results with an irreproachable transmission
Skipping gearbox maintenance with SADEV certified parts means accepting a possible mechanical failure during a race meeting. Since 2010, Optimiz Access has been the benchmark for technical customization and preparation for Renault Sport enthusiasts. Based near Cambrai, Douai, and Saint Quentin, we put our expertise at the service of your stopwatch.
Note: Find racing gear oil, bearings, and SADEV overhaul kits in the complementary products section at the bottom of the page.



