Promoto-MX Precision Rear Hub Sprocket Medium Carbon Steel MX036S by GPM  [MX036S]

Medium carbon steel hub chain sprocket - engineered

This hub chain sprocket is a direct-fit replacement part for LOSI Promoto-MX motorcycles, machined to medium carbon steel specifications to increase resistance to tooth deformation and bending under load. The component is intended for hobbyists seeking a durable drivetrain upgrade for scale dirt bike models.

The sprocket transmits rotational force from the pinion and spur gear area to the rear hub while maintaining chain alignment and correct slack. When replacing the sprocket, inspect mating components including chain, hub bearings and mounting hardware to ensure consistent load distribution and avoid early wear.

Installation follows standard rear-wheel service steps: remove the wheel, refit the sprocket using original mounting hardware, torque fasteners to the vehicle guide, then verify chain tension and lateral tracking. Keep service within RC scale practices and monitor run-in wear after the first few sessions.

GPM MX036S is a precision-oriented medium carbon steel option for users who prioritise improved durability and consistent fitment when servicing compatible Promoto-MX drivetrains.