Comet 108 4-Pro clutches accept OEM starter rings Added fourth load-bearing member increases roller and button life These race clutches are for high-performance applications ONLY Uses four clutch weights to greatly enhance tuneability Arms can be used in sets of two to better zero-in on desired weight Uses same springs as 102-C and 108-EXP clutches Captivated tower allows shouldered cover bolts to virtually eliminate tower spreading Features a bushing in the movable face To determine arm, add weight of three arms used in 108-EXP, add 14%, then divide by four; this will be the new arm weight to use For calibrations contact a high performance specialist. CLUTCH 108 4 PRO
