SADEV 5th Speed Slider ST66 Gearbox - Renault Clio 2 Gr N

Don't Compromise Your Top Speed: The Risk of a Worn 5th Gear Slider on SADEV ST66

For a Renault Clio 2 Gr N driver equipped with a SADEV ST66 gearbox, 5th gear is the gateway to maximum speed. Failure to replace a worn 5th gear slider (Ref. F1903013) means accepting performance loss and increasing the risk of major damage.

Speed Loss and Engine Failure Risk

A worn SADEV 5th gear slider no longer ensures perfect engagement, potentially leading to gear jump-out under high load. During full acceleration or on the straightaway, this jump can cause dangerous engine over-revving and, in the worst case, engine failure—a much higher cost than the preventive replacement of this gear set component. You lose the reliability and confidence in your competition transmission.

“My 5th gear slider has play, is this a problem on my ST66 gearbox?”

Yes, absolutely. Play or wear on the dog engagement teeth indicates imminent failure. On the SADEV ST66 gearbox for the Clio 2 Gr N, precision is key. Replacement with reference F1903013 is the only way to guarantee the optimal condition of your fifth ratio and avoid a costly retirement from the race.

Optimiz Access: The Security of an Authentic SADEV Part

For sports vehicles like the Renault Clio 2 Gr N, only the original SADEV part ensures the required tolerances and mechanical strength. As an official SADEV distributor for the Renault Sport Competition ranges (Clio 2 X65 Cup, Clio 3 X85 Cup, Megane N4, Twingo R2), we guarantee the authenticity of your 5th gear slider.

We understand that racing maintenance cannot afford delays. This is why we ensure quick processing of your order and fast delivery.

“Which other components should I change with the 5th gear slider?”

For a complete overhaul and to prevent premature wear, it is advisable to check and potentially replace the 5th gear pinion 23 teeth (Reference F1903004) and the 5th gear wheel. You will find all these complementary products at the bottom of this page to simplify your SADEV parts order.

Advice and Fitting of Competition Parts

Based in the Hauts-de-France, near Lille, Douai, and Valenciennes, Optimiz Access also offers its expertise for the fitting and maintenance of your SADEV sequential gearboxes. Professional service for maximum confidence.