

SADEV Machined 5th Gear Fork ST66 Gearbox – Renault Clio 2 Gr N (F0022025)
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Ensure precise and fast 5th gear changes on your Renault Clio 2 Gr N! This machined 5th gear shift fork SADEV (P/N: F0022025) is an essential component to guarantee perfect engagement of 5th gear in your ST66 dog-ring gearbox. A worn fork causes dangerous play in the selection and compromises transmission reliability at high speed. Optimiz Access is your trusted distributor for all SADEV Competition parts for Clio 2 Gr N, Clio Cup, Mégane N4, and Twingo R2.
Genuine SADEV part for maximum performance and durability.
Not replacing this 5th Gear Fork risks a false neutral at full speed
In rallying or on the track, 5th gear is often used for top speeds or to maintain optimal engine revs. On your Renault Clio 2 Gr N equipped with the ST66 SADEV dog-ring gearbox, the machined 5th gear shift fork (P/N: F0022025) is the part that guarantees the correct pressure and positioning of the slider. A fork fatigued or deformed by intensive competition use introduces an unacceptable risk.
The Consequences of a Defective 5th Gear Fork
- Fatal Imprecision: A worn fork no longer pushes the slider with the required precision. You risk a difficult gear change, a false neutral upon engagement, or worse, an unintentional disengagement of 5th gear under load.
- Damage to Gears and Slider: Misalignment caused by a deformed fork leads to accelerated wear of the dog rings and the slider, necessitating a premature and costly gearbox rebuild.
- Loss of Performance: Hesitation or difficulty in engaging 5th gear costs you crucial tenths. In motorsport, transmission reliability is non-negotiable.
Genuine SADEV Fork: Guarantee of Reliability at High Speed
Only a genuine SADEV machined 5th gear shift fork ensures the perfect fit with the 5th gear selector shaft and the mechanical resistance required by the ST66 gearbox constraints. Optimiz Access supplies 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 5th Gear Engagement
When should this 5th gear fork be replaced?
This part must be inspected during every gearbox overhaul. It must be replaced if it shows signs of wear, excessive friction, or if a 5th gear shifting problem occurs, particularly 'crunching' or unexpected disengagement.
Which components should be checked along with the fork?
It is imperative to check the condition of the 5th gear selector shaft, as any deformation could damage the new fork. These complementary products are available at the bottom of this product page.
Specialized Installation in the Hauts-de-France
Based near Cambrai, Lille, and Valenciennes in the Hauts-de-France, we offer installation and maintenance services for your sports and premium vehicles. Our expertise in competition mechanics guarantees the perfect assembly of your ST66 gearbox. We ensure fast delivery of this shift fork worldwide.















