
Rear sprocket MOOSE OFFROAD HARD - PARTS designed for motocross: a 7075 T651 aluminium crown that is heat-treated and machined for a precise fit on the final drive. Anodised blue finish for a race look and quick identification during maintenance work.
Machined 100% (without stamping or grinding), this crown offers an optimised tooth thickness for maximum contact between the tooth and the chain (pitch 428). The additional heat treatment of the 7075 T651 alloy limits deformation and maintains stable dimensions, compared to the generally thinner 7075 T6 parts.
Compatibility (examples): YAMAHA YZ 85 LW (2021), SUZUKI RM 85 17/14 Small Wheel (2019), YAMAHA YZ 85 SW (2020). Ideal for replacing a worn crown or adjusting the final ratio on 85 cc machines. Mechanical installation recommended by a professional to ensure correct chain alignment and timing.