Application Compatible for Polaris Sportsman 500 1996-2013 Compatible for Polaris Sportsman 570 2008 Compatible for Polaris Sportsman X2 500 2006-2009 Compatible for Polaris Ranger 500 1999-2012 Compatible for Polaris Ranger 1999-2009 Compatible for Polaris Magnum 500 1999-2003 Compatible for Polaris Magnum 425 1999 Compatible for Polaris Scrambler 500 1997-2012 Compatible for Polaris Xplorer 500 1997 Compatible for Polaris ATP 500 4X4 2004-2005 Compatible for Polaris Big Boss 500 1998-2002 Compatible for Polaris Worker 500 1999 2001NOTE: In the compatible for case of the same part numbers, the models after 2009 may need to be modified according to the specific models in order to install this product correctly.OEM Number 3086811, 3085634, 3085526, 3085369, 3087221, 3087224, 3084890, 3085534, 3085371, 3084922, 3089966, 3085074 Specification Include:1x Cylinder, OE:3086811, 3085634, 3085526, 30853691x Piston, OE:30872215x Piston Rings, OE:30872241x Wristpin 2x Circlips, OE:3084890、30855341x Chain Tensioner 1x Head Gasket, OE...