Primo's Slimline open belt drive features a 1 3/4" narrowed belt. This 11mm. pitch belt is the a "Dense Pack" Kevlar polychain belt, tested to withstand horsepower loads in excess of 150 HP. The Slimline features a one-piece billet aluminum motor plate and a Carbon Fiber or Billet Aluminum outer cover that fully covers the belt and pulleys for both added safety and pleasing aesthetics. Kit comes with belt, front and rear pulleys, as well as a Pro-Clutch assembly for maximum torque transference. Fits all electric start 1990 thru 1999 Evolution Softails and 2000 thru 2006 Twin Cam Softails. Use with front pulley bolts and inserts for offset applications as listed for regular Brute IV belt drives with 3 1/2" diameter (upper half of belt cover removed for illustration purposes).