Order Includes: 1x Wheel Collar. Compatible with Yamaha models: YFZ450R 2009-2021, YFZ450 R Special Edition 2010-2021. Part Numbers: 18P-2538-00-00 / 18P25380000, Measurements: Outer Diameter / 38.5mm, Mounting Surface Height / 54.5mm, Bolt Spacing Center to Center / 115mm, Accepts 24t 25mm Spline. Note: This part only fits on the R models/ Will NOT fit YFZ450/ Use only on YFZ450 R. We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced..
