BDL 1-5/8 8mm Belt Drive With Lock-Up Clutch System For Harley Softail Features: Kit includes front pulley, belt, clutch hub, clutch hub basket and aramid clutch set Direct bolt-in application Ball-bearing lockup design pressure plate (with diaphragm spring( Clutch set consists of two half plates, four full plates and five steel drive plates Lockup design applies extra pressure to the clutch plates for positive engagement with no clutch slippage No increase in lever pull effort System now comes with the Quiet Clutch system Rear pulley has a 40mm, double-row bearing with an inner stress-proof steel clutch hub to support the clutch Individual replacement components available for long term support Does not included motor plate or starter provisions Made in USA Note : Not for use with offset primaries.