Ultralight Rear Sprocket Renthal Rear Ultralight Sprockets: Manufactured to extremely tight tolerances from a special material developed to withstand the stress of Supercross, Motocross and Enduro. 7075 T6 aluminum alloy rear chainwheels are 66% lighter than steel, yet incredibly durable. Advanced tooth profile, concentricity and accuracy of fit provide maximum power transfer and long-life. Combination of a very high strength base material and an exceptionally hard-wearing surface result in significantly increased chainwheel life. Self cleaning mud grooves help prevent dirt build-up.
_________________________________________________________________________________________________________________________________________________ FITMENT CHART

1990	Suzuki	RM80
1992	Suzuki	RM80
1996	Suzuki	RM80
2002	Suzuki	RM85
2003	Suzuki	RM85
2005	Suzuki	RM85
2015	Suzuki	RM85
2004	Suzuki	RM85L
2005	Suzuki	RM85L
2012	Suzuki	RM85L
1993	Yamaha	YZ80
1995	Yamaha	YZ80
1996	Yamaha	YZ80
1998	Yamaha	YZ80
2001	Yamaha	YZ80
2005	Yamaha	YZ85
2007	Yamaha	YZ85
2013	Yamaha	YZ85
2014	Yamaha	YZ85
2015	Yamaha	YZ85