Tried, tested and built to handle high-horsepower engines Consistently smooth shifting even after hours of use Wider rollers for increased bearing area (33% more) '97 and newer 108-EXP clutches include special recessed mounting bolt with special pilot washer Features a bushing in the movable face Uncalibrated clutches are sold without cam arms and spring 108-EXP clutches use the same cam arms and spring as the 108-C Change clutch to accept 1-7/16ö belt width by installing one spacer washer under the spider washers Positive (+) numbers indicate the taper starts the specified distance into the casting 1-3/8ö standard belt width and 1-1/4ö optional belt width 7.5:1 taper with Ski-Doo gear bosses Accepts OEM ring gear for electric start models Not for any Ski-Doo '08-'10 models with 90-tooth OEM ring gear. CLUTCH 108EXP