Feature●Fits: Polaris Sportsman 500 (1996-2013), Ranger 500 (1999-2012), Magnum 500 (1999-2003), Scrambler 500 (1997-2012), Xplorer 500 (1997), ATP 500 4X4 (2004-2005), Sportsman X2 500 (2006-2009), Big Boss 500 (1998-2002), Worker 500 (1999-2001)●OEM Replacement●The Bore cylinder and Stroke is 92mm x 75mm●Fit for AFTERMARKET TENSIONER only!●THIS ITEM HAS TO BE INSTALLED BY PROFESSIONAL MECHANICS SPECIALIZED IN ATV AND UTVsDescription