
Moose Offroad Hard-Parts Rear Sprocket made from 7075 T651 aluminium, designed for motocross riders seeking a lightweight and reliable part without compromising on assembly precision. This rear sprocket features an additional heat treatment that limits deformation and allows for a greater material thickness compared to thinner 7075 T6 sprockets. Fully machined, it is neither stamped nor ground, ensuring consistent fit quality and finish.
The tooth profile has been optimised to ensure maximum contact between the tooth and the 428 chain, minimising unwanted play. Ideal for the motocross environment, this sprocket is suitable for small displacement bikes where the weight/stiffness ratio is crucial.
Compatibility confirmed with common 85 cc models such as the GAS-GAS MC 85 19/16 (2024), KTM SX 85 19/16 (2022), and HUSQVARNA TC 85 19/16 (2022). Please check the 428 pitch and the number of teeth before installation to ensure compatibility with your machine.