Manufactured by Factory Spec 1 Pair of 1 spacers adds 2 total width, makes it easy to widen the stance of your ATV. Provides extra stability and has the ability to accommodate larger tires. Studs are integrated, you do not need to remove the stock studs for installation. Hardware included for easy installation Constructed of 6061 T-6 aluminum for maximum strength and durability These spacers will work with a bolt pattern of 4/110 The FRONT AND REAR of the following models have a bolt pattern of 4/110 2002 Yamaha Grizzly 660 4x4 YFM660F 2003 Yamaha Grizzly 660 4x4 YFM660F 2004 Yamaha Grizzly 660 4x4 YFM660F 2005 Yamaha Grizzly 660 4x4 YFM660F 2006 Yamaha Grizzly 660 4x4 YFM660F 2007 Yamaha Grizzly 660 4x4 YFM660F 2008 Yamaha Grizzly 660 4x4 YFM660F