JAZRIDER JR-THS13-GU Gun Metal Aluminum Rear Gearbox for Tamiya Hotshot, Super Hotshot, Boomerang and Bigwig  [JR-THS13-GU]

Reinforce your Tamiya with a JAZRIDER Aluminum Rear Gearbox

The JAZRIDER Aluminum Rear Gearbox for Tamiya Hotshot, Super Hotshot, Boomerang and Bigwig models delivers a strong, corrosion resistant upgrade in an attractive gun metal finish. It is engineered to replace the stock rear gearbox for riders who want better durability without excess weight.

Why aluminium improves drivetrain resilience

Aluminium parts are favoured in RC builds because they resist deformation while keeping mass down. Upgrading to an aluminium rear gearbox helps the drivetrain survive rough runs and reduces play that can develop in plastic housings, improving long term service life.

Designed to fit multiple classic Tamiya chassis

This unit is made to align with the factory mounting points on Hotshot, Super Hotshot, Boomerang and Bigwig models, enabling a straightforward swap. Minimal trimming or extra parts are normally required, so you can get back on the track quickly.

Fitment and maintenance pointers

When fitting the JAZRIDER unit, tighten fasteners to the recommended torque and verify gear mesh before the first run. Check the gearbox periodically for loose screws and minor wear after heavy bashing to keep driveline performance steady.