
Moose Offroad Hard-Parts — Rear Sprocket (manufacturer part number: 1210-251-50-10X): a rear sprocket designed for enduro and motocross, combining lightness and strength through a bi-material construction. The inner ring made of 7075-T6 aluminium reduces rotational mass while the outer ring made of reinforced steel ensures the longevity of the teeth on abrasive terrains.
Designed for riders who ride in muddy and abrasive conditions, this sprocket offers a good weight/strength compromise without resorting to a full steel sprocket. Its black finish and meticulous machining integrate well on enduro and motocross machines. Examples of frequent compatibility: YAMAHA YZ 450 F (2026), YAMAHA YZ 125 (2026), and YAMAHA YZ 450 F Monster Energy Racing Edition (2025) — however, please check the fit for your model and chain length before installation.