Includes Clutch Drum and Secondary Sheave Install Ready Right Out of the Box, Quality and Performance Guaranteed Balanced to Reduce Vibration for Smoother Operation Replaces OEM Part Numbers: Yamaha 5KM-16611-10-00, 5KM-17611-00-00 Compatible with the 2002-2008 Yamaha 660, 2002-2008 Yamaha 660 Hunter, 2005-2006 Yamaha 660 Special Edition, 2004-2007 Yamaha 660, 2005-2007 Yamaha 660 Hunter, MK1000965 Wet Clutch Drum Primary Sheave A brand new Wet Clutch Drum with Sheave. This Kit arrives ready for assembly straight out of the box. All inside surfaces are machined preventing premature wear on your belt. The parts are also balanced to support smooth, effortless speed transitioning, while reducing vibrations to protect your clutch and belt. Compatible with (Replacment for) The Following Vehicles: For Yamaha 660: 2002-2008 For Yamaha 660: 2004-2007