LOSI Promoto-MX Chain Sprocket Medium Carbon Steel Replacement MX036S by GPM  [MX036S]

Medium carbon steel hub sprocket for RC motorcycles

This hub chain sprocket is supplied as a replacement drivetrain part for LOSI Promoto-MX motorcycles and uses medium carbon alloy steel to improve tooth life and bending resistance compared with basic stamped options. It is aimed at routine servicing and setup tuning on scale off-road bikes.

The sprocket is a mechanical element that engages the chain and transmits drive to the rear hub, while influencing chain alignment and slack. When fitting a replacement, inspect the chain and hub for wear to prevent early failure or uneven engagement.

Fitment is similar to standard Promoto-MX maintenance tasks: remove the rear wheel, replace the sprocket using the current mounting hardware, then set appropriate chain tension and lateral alignment prior to operation. Keep work within RC maintenance practices.

Use this medium carbon steel sprocket when you require a dependable, direct replacement for the listed Promoto-MX models and prefer a tougher material for regular drivetrain maintenance.