main image Rear Sprocket
Image may not reflect actual product sold. Read product description carefully.

Rear Sprocket

SKU #4ES-25447-10-00
The Rear Sprockets are made from 7075-T6 billet aluminum CNC-machined for maximum fit accuracy. The rear sprockets features a radial mud groove etched just inside the sprocket teeth to shed mud and grit which saves weight and increases chain life. Sprocket sizes other than stock are for closed-course competition only on ’06 and later off-road models and all street legal models. Changing the final drive ratio affects exhaust emissions and also affects speedometer readings.YZ models are for closed-course competition use regardless of modification.
Select a compatible vehicle
Share this


This accessory is restricted to closed-course competition use. See California Regulations regarding Emission-Related Parts and Accessories for products for closed-course competition use only.

  • YZ85 (2013-2022)
  • YZ85LW (2022)