Cam Adjustment Spring, Part 5630551 is used to adjust preload on your suspension/shock assembly. It is designed and tested by Polaris Engineers to ensure durability, high quality, and performance through rigorous field and lab validation testing. Spend less time fixing your vehicle and more time riding. We've been making ATVs for nearly 40 years, don't settle for anything less than OEM quality. This Accessory is Designed to Fit the Following: ATV , 2010-2011, 2005-2007 Sportsman 800 EFI , 2010-2011 Sportsman Touring 500 HO , 2010 Sportsman X2 550 , 2010 Sportsman Touring 850 EPS , 2010 Sportsman Touring 550 EPS , 2010 Sportsman 300 2x4 , 2009-2010 Sportsman XP 850 EPS , 2009-2010 Sportsman XP 850 , 2009-2010 Sportsman XP 550 EPS , 2009-2010 Sportsman XP 550 , 2008-2013 Trail Blazer 330 , 2008-2011, 2006 Sportsman 500 HO , 2008-2011 Sportsman 400 HO , 2008-2010 Sportsman 300 , 2008-2009 Sportsman Touring 800 EFI , 2008-2009 Sportsman Touring 500 EFI , 2008-2009 Sportsman 800 HO EFI , 2008 Sportsman X2 700 EFI , 2007-2012, 2004-2005 Scrambler 500 4X4 , 2007-2009 Sportsman X2 800 EFI , 2007-2009 Sportsman X2 500 EFI , 2007 Sportsman 800 EFI Night Camo LE , 2007 Sportsman 800 EFI LE , 2006-2009 Sportsman 500 EFI , 2006-2009 Hawkeye 2X4 , 2006-2007 Sportsman 450 , 2006-2007 Hawkeye 4X4 , 2006 Sportsman X2 500 , 2006 Scrambler 500 4x4 , 2005-2007 Sportsman 700 EFI , 2005-2006 Sportsman 700 , 2005 Sportsman 600 , 2003-2013 Trail Boss 330 , 2003-2006 Trail Blazer 250 , 2003-2006 Magnum 330 4X4 , 2003-2005 Magnum 330 2X4 , 2002, 1996 Trail Blazer , 2002 Xpedition 425 , 2001, 1997 Sportsman 400 , 2001-2002, 1999 Xplorer 400 , 2001-2002, 1996 Xplorer 4X4 , 2001-2002 Trail Boss 325 , 2001-2002 , 2001 Magnum 325 2x4 , 2000-2002 Xpedition 325 , 2000-2002 Trail Boss , 2000-2002 Magnum 325 4X4 , 2000-2001 DIESEL , 2000 Xplorer 300 , 2000 Xplorer 250 4X4 , 2000 Magnum 325 2X4 , 1999-2001 Sportsman 500 , 1997-1998 Xplorer 400L , 1997 Xpress 400L , 1996-1998 Magnum 4X4