Comet 108 4-Pro Clutch Flush with Polaris Gear Bosses

Comet 108 4-Pro clutches now accept OEM starter rings. Added fourth load-bearing member increases roller and button life. These race clutches are for high-performance applications ONLY. Clutch uses four clutch weights to greatly enhance tuneability. 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. 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. Each features a new bushing in the movable face and redesigned fixed face for increased durability. IMPORTANT NOTE: These clutches are for racing use only. For calibration, contact a high performance specialist or Comet Industries. 7.5:1 taper w/ Ski-Doo gear bosses.