Renthal 437U-520-40GBSI Ultralight Rear Sprocket - 40T

Material: Aluminum
Sprocket Position: Rear
Sprocket Size: 520
Sprocket Teeth: 40

Renthal Ultralight rear chainwheels are manufactured to exteremly tight tolerences from a special material developed to withstand the rigours of Supercross, Motocross and Enduro. The 7075 T6 aluminium alloy rear chainwheels are 66% lighter than steel, yet incredibly durable. Their advanced tooth profile, concentricity and accuracy of fit provide maximum power transfer and long-life. Renthals combination of a very high strength base material and an exceptionally hardwearing surface result in significantly increased chainwheel life.

Vehicle Fitment:

2008-2013 Yamaha YFM250 Raptor
2008 Yamaha YFM250 Raptor SE
2011 Yamaha YFM250R Raptor
2007-2008 Yamaha YFM450 Grizzly 4x4 Auto
2011-2014 Yamaha YFM450 Grizzly 4x4 Auto
2013-2024 Yamaha YFM700 Raptor
2006-2009 Yamaha YFM700R Raptor
2011-2021 Yamaha YFM700R Raptor
2007 Yamaha YFM700R Raptor GYTR Edition
2007-2019 Yamaha YFM700R Raptor SE
2004-2009 Yamaha YFZ450
2012-2013 Yamaha YFZ450
2006-2007 Yamaha YFZ450 Bill Balance Edition
2007-2008 Yamaha YFZ450 SE
2009-2024 Yamaha YFZ450R
2009-2018 Yamaha YFZ450R SE
2010-2011 Yamaha YFZ450X
2010 Yamaha YFZ450X Bill Balance
2011 Yamaha YFZ450X SE