Tuning component for stock clutches or when using Heavy Hitter Arms.
Hardened steel rollers are bushed and ISR stock legal.
Two sizes offers tuning for all models.
Smaller size increases force of cam arms, larger size decreases force.
More economical than helixes with more consistent results.
Melonite coated for lubricity.
Fits all late model Yamahas with 9mm pins (SRX, Viper, Venom, Rage, RX-1, Warrior, Vector, Mtn models, and newer models).
 
Sold in sets of three