
Rear Sprocket / Rear Crown MOOSE OFFROAD HARD - PARTS (1211-251-50-10)
Aluminium rear crown designed for offroad machines. Fully machined from 7075 T651, this crown undergoes additional heat treatment to limit deformation and offers a tooth thickness superior to the thinner 7075 T6 sprockets. The result: a 100% machined tooth profile (without stamping or grinding) and an optimised tooth thickness for maximum contact between the crown and the 520 chain.
Designed for enduro and motocross, this crown is aimed at riders looking for a lightweight, precise drive component made for the terrain. Ideal for a 520 chain, it is particularly suitable for the listed YAMAHA models: YZ 450 F Monster Energy Racing Edition (2021), YZ 450 F (2021), and YZ 250 F Monster Energy Racing Edition (2021). Installation and compatibility checks are recommended before fitting.