
TRW – Clutch Spring Kit (ref. MEF321-5)
Replace your clutch springs with this TRW kit designed for demanding trail and road bikes. These silver-finished steel springs provide superior resistance — approximately +10% compared to the original springs — achieved either through a longer length or a tighter winding. Ideal for those seeking a more responsive clutch without modifying the original mechanism.
Designed for Trail/Adventure, Enduro, Roadster, and Supermoto universes, these springs are particularly suitable for YAMAHA XT 660 Z Tenere, XT 660 X, and XT 660 R (2009 models, 660 cm3). They offer robust mechanical performance and a more sustained load on the clutch discs, useful for limiting slip during sustained or heavy riding.
Note: the image shown is indicative and may not exactly match the item delivered. Please check compatibility with your model before installation.