SADEV Machined 3rd-4th Fork ST66 Gearbox – Renault Clio 2 Gr N (F0027026)

Failing to replace this SADEV 3rd-4th Fork means compromising your best times

3rd and 4th gears are at the heart of the action in the majority of corners in **rallying** or on the **track**. Your ST66 SADEV dog-ring gearbox in the Renault Clio 2 Gr N relies entirely on the reliability of this machined 3rd-4th shift fork (P/N: F0027026) to maintain pressure and alignment on the slider. Even slight wear, due to the extreme stresses of competition, is an imminent danger.

The Consequences of a Defective 3rd-4th Shift Fork

• Loss of Competitiveness: A worn fork leads to imprecision or difficulty in engaging the gear. These shifting hesitations directly result in lost tenths of a second with every change, undermining your efforts for the podium.
• Unintentional Gear Disengagement: The most serious risk is the sudden gear disengagement (false neutral) during full acceleration in 3rd or 4th. This endangers the driver, the engine (over-revving), and the gearbox itself.
• Increased Gear Wear: Inaccurate positioning of the slider by a deformed fork increases friction and accelerates the wear of the dog rings and gears. A small saving on the fork guarantees a costly gearbox overhaul in the short term.

Genuine SADEV Fork: The Heart of Your ST66 Transmission

Only a genuine SADEV machined 3rd-4th shift fork ensures the correct geometry and material strength. Optimiz Access, a trusted distributor, equips you with SADEV transmission parts for:

• Renault Clio 2 Gr N (ST66 Gearbox)
• Renault Clio 2 X65 Cup
• Renault Clio 3 X85 Cup
• Renault Megane N4
• Twingo R2

Overhaul Questions for 3rd and 4th Gears

How often should the 3rd-4th shift fork be replaced?

This fork works the hardest. It must be checked during every complete gearbox overhaul. Any sign of excessive polishing, gouging, or play on the 3rd-4th selector shaft indicates a necessary replacement.

What component is essential to check with the fork?

The smooth sliding of the fork depends on the condition of the 3rd-4th selector shaft. If this shaft is scratched or deformed, it must be replaced simultaneously to guarantee smooth shifting. This 3rd-4th selector shaft and other complementary products are available at the bottom of this product page.

Why trust Optimiz Access for installation?

Our workshop in the Hauts-de-France region (near Arras, Douai, Saint Quentin) specializes in the maintenance and customization of Renault Sport vehicles since 2010. Our expertise guarantees the precise torquing and assembly of your ST66 gearbox. We ensure fast delivery of this shift fork worldwide.