Aluminum Chain Tension Adjuster Set for Promoto-MX is a precision CNC-machined tuning accessory that lets you dial in chain tension on Losi Promoto-MX motorcycles (PM-MX/SM variants). Made from 6061-T6 aluminum and finished with a clear anodized coating, the set stands up to use while keeping weight low, and laser-etched tension values provide quick identification for accurate adjustments.

As a direct-fit upgrade for Promoto-MX, no extra parts are required for installation. The combination of durable aluminum construction, precise machining, and easy-to-read tension markings helps maintain proper chain tension, improving drivetrain performance and extending component life across riding conditions.