Factory Spec severe duty brake pads are made of a sintered bronze compound. Their exclusive high-density mix extends pad life for use in extreme conditions such as sand, mud, water and farm usage. If long life is your main concern, these brake pads are your best choice. They will last much longer than any semi-metallic or organic brake pad on the market. Manufactured by Factory Spec Included is two sets of brake pads, as pictured This is enough to replace the pads on the front calipers Made in China These sintered metal brake pads fit the following models 2002 Suzuki King Quad 300 4x4 LT-F300F 2006 2009 Suzuki Quadracer 450 LT-R450 1998 2002 Suzuki Quadrunner 500 LT-F500F 2000 2001 Suzuki Quadmaster 500 LT-A500F 1989 2004 Kawasaki Bayou 300 4x4 does not fit 2x4 models 1993 1999 Kawasaki Bayou 400 4x4 2006 2013 Kawasaki Brute Force 650 4x4i fits 4x4i models only 2005 2013 Kawasaki Brute Force 750 4x4i 2008 2013 Kawasaki Teryx 750 2004 2009 Yamaha YFZ450 2009 2013 Yamaha YFZ450R 2010 2011 Yamaha YFZ450X 2006 2013 Yamaha Raptor 700 YFM700R 2006 2009 Yamaha Rhino 450 4x4 YXR450 2004 2007 Yamaha Rhino 660 4x4 YXR660 2008 2009 / 2011 2013 Yamaha Rhino 700 4x4 YXR700 fits rear of these models also 2011 2013 Can-Am Commander 800R / 800R XT / 800R DPS 2011 2013 Can-Am Commander 1000 / 1000 X / 1000 XT / 1000 LTD / 1000 DPS