11/2" and 15/8" kits include front pulley, belt, clutch hub, clutch basket and Kevlar® clutch set (consists of two half plates, four full plates and five steel drive plates)Direct bolt-in applications3" electric start kits include front pulley, belt, clutch hub and clutch basket and Kevlar® clutch set (consists of two half plates, four full plates and five steel drive plates), 6061 T-6 billet motor plate, outside guard and polished pulley coverAll systems now come with the Quiet Clutch systemPrecision-machined, polished aluminum pressure plate uses nine springs and shoulder bolts to ensure even spring pressure (included in kit)Rear pulley has a 40 mm, double-row bearing with an inner stress-proof steel clutch hub to support the clutchMade in the U.S.A.NOTE: 3" systems are not designed for use with floorboards.NOTE: Not for use with offset primaries.