TAMIYA Hotshot / Super Hotshot / Boomerang / Bigwig Aluminum Rear Gear Box (Gun Metal) JR-THS13-GU by Jazrider  [JR-THS13-GU]

Precision aluminum rear gearbox for TAMIYA Hotshot models

This JR-THS13-GU aluminum rear gear box is a scale RC replacement housing made to sit in place of the factory plastic rear gearbox on classic TAMIYA Hotshot-family vehicles. The gun metal finish and machined aluminum construction deliver a stiffer housing and greater impact resistance while keeping the stock mounting footprint.

The unit's purpose is straightforward: swap the original rear gearbox shell to increase rear-end rigidity and maintain better gearbox alignment. That change can influence gear mesh, suspension reaction and overall robustness when running harder or with upgraded powertrains.

Installation notes: the shell matches the Hotshot layout and uses the original mounting points, so you normally reuse the vehicle's existing screws and internal components (gears, bearings, shafts). After fitting, check gear mesh and shaft alignment and tighten fasteners progressively to avoid distortion; standard hobby hex drivers are sufficient for routine replacement.

Pick this aluminum rear gear box when you need a direct-fit metal housing to stiffen the rear section and improve resistance to impact and wear on Hotshot-series Tamiya models.