LOSI Promoto-MX Motorcycle Aluminum Chain Tension Adjuster by JAZRIDER JR-LMX08-BK  [JR-LMX08-BK]

Aluminum chain tension adjuster for Promoto-MX

This is an RC-scale chain tension adjuster set designed for Team Losi Promoto-MX motorcycle models, produced by JAZRIDER under model JR-LMX08-BK. The parts are intended to replace or upgrade the stock adjuster components on Promoto-MX chassis, providing a rigid aluminum mounting point to help keep chain alignment consistent during riding and setup.

Installation is straightforward on compatible Promoto-MX frames, using the existing mounting points and fasteners from the bike. When fitting, verify axle alignment and torque the fasteners to the chassis manufacturer's recommended values, then re-check chain tension and lateral play before the first run. This component is a direct RC spare part and is not suitable for full-size vehicles.

For tuning, use the adjuster to obtain the recommended chain sag for your Promoto-MX setup, and check alignment under suspension compression if you make changes to ride height or shock settings. Regular inspection after off-road sessions helps maintain drivetrain efficiency and reduces premature wear on chain and sprockets.