NICHE Primary Drive Clutch Part Number: MK1001086 Includes: Drive Clutch Assembly (With Spring & Weights) This Part is known to be Compatible with the following vehicles: Polaris ATP 500 HO: 2004-2005 Polaris Big Boss 500 6X6: 2001-2002 Polaris Magnum 325 2X4: 2001 Polaris Magnum 325: 2001 Polaris Magnum 330: 2003-2006 Polaris Magnum 500 2X4: 2002 Polaris Magnum 500 RMK: 2002 Polaris Magnum 500: 2001-2002 Polaris Ranger 425 2X4: 2001-2004 Polaris Ranger 500 2X4: 2005-2006 Polaris Ranger 500: 2003-2006 Polaris Scrambler 400 2X4: 2000 Polaris Scrambler 500 2X4: 2001-2002 Polaris Scrambler 500 Freedom: 2002 Polaris Scrambler 500: 1998-2006 Polaris Sportsman 400: 2001-2004 Polaris Sportsman 500 6X6: 2001-2006 Polaris Sportsman 500 HO Limited: 2001 Polaris Sportsman 500 HO: 2001-2006 Polaris Sportsman 500 Limited: 2001 Polaris Sportsman 500: 2001-2006 Polaris Sportsman 600 Twin: 2003-2005 Polaris Sportsman 700 MV: 2005 Polaris Sportsman 800 Twin: 2005-2006 Polaris Sportsman X2 500: 2006 Polaris Trail Blazer 250 Freedom: 2002 Polaris Trail Blazer 250: 2001-2006 Polaris Trail Boss 325 SE: 2001 Polaris Trail Boss 325: 2001-2002 Polaris Trail Boss 330: 2003-2006 Polaris Worker 500: 2001 Polaris Xplorer 250: 2001-2002 Polaris Xplorer 400: 2001-2002 NICHE Primary Drive Clutch Kit. Includes primary drive clutch drive clutch spring and clutch weights.