This aluminum chain tension adjuster is an RC-scale replacement part made for the Team Losi Promoto-MX motorcycle lineup and offered by JAZRIDER under model JR-LMX08-GR. The unit focuses on providing a stable, corrosion-resistant mounting point for final chain tension and lateral alignment adjustments on Promoto-MX style dirt bike kits.
Manufactured in aluminum with a green anodized finish, the adjuster replaces the stock plastic or alloy piece and uses the original mounting locations on the Promoto-MX rear end. The part is intended to retain factory geometry while giving a firmer feel during incremental chain setting, helping to keep chain play consistent under riding loads typical for 1/10 scale motorcycle models.
Installation is straightforward for hobbyists familiar with motorcycle hop-ups: remove the existing adjuster at the rear wheel, locate the factory fasteners and mounting points, and fit the JAZRIDER unit in the same position. Tighten to the chassis' recommended torque and verify chain tension through its full travel to confirm alignment before running.
In tuning terms, this adjuster serves as a precision endpoint for incremental changes to chain length and alignment. It helps when dialling in rear wheel tracking or when switching between different chain types, and its aluminum body resists deformation compared with softer components, which can assist in repeatable setups during maintenance and tuning sessions.
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