TAMIYA Hotshot Series Rear Gearbox Upgrade JR-THS13-LB for Hotshot, Super Hotshot, Boomerang and Bigwig by Jazrider  [JR-THS13-LB]

Stiffer blue-anodized rear box for TAMIYA Hotshot chassis

The JR-THS13-LB is a machined aluminum rear gear box housing finished in blue anodize that takes the place of the original pressed plastic shell. The metal body reduces flex and gives a firmer support point for gears and bearings under heavier loads.

Purpose and compatibility: designed as a rear gearbox housing it locates the existing spur and pinion relationship in the rear of the chassis. Choose this part when you want a more robust housing for demanding use or while experimenting with different gear and bearing configurations.

Mounting and maintenance: the component follows the original TAMIYA bolt pattern so it integrates without altering the chassis layout. The same cover and access points allow routine gear inspection and bearing swaps without additional modification.

If your goal is improved durability and a firmer drivetrain mounting on TAMIYA Hotshot variants, this aluminum rear gearbox housing provides a clean upgrade path while preserving the stock layout.