The 2013/2014 CRF450 uses a different rear wheel to al the models from 2002 onwards as the sprocket is 3.8mm further out.
This spacer allows the use of both OEM and aftermarket wheels such as Haan, Talon and SM Pro from 2002-2012 on the newer bikes.
The spacer is CNC machined from high grade aluminium and has been produced in the UK.
Available in Red or Silver.