TAMIYA Hotshot/Super Hotshot/Boomerang/Bigwig Aluminum Rear Gear Box (Red) by JAZRIDER JR-THS13-RD  [JR-THS13-RD]

Tamiya Hotshot / Super Hotshot / Boomerang / Bigwig Aluminum Rear Gear Box (Red)
Price:
USD$31.90
Brand:
JAZRIDER
Model:
JR-THS13-RD
Condition:
Brand New
Available in shop
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Aluminum rear gearbox for Hotshot family

This aluminum rear gear box is a replacement hop-up designed for TAMIYA Hotshot series models. Fabricated in red anodized aluminum, it replaces the stock plastic housing to reduce flex and provide a firmer mounting point for the rear drivetrain components. The part suits hobbyists who want a durable, dimensionally stable rear end without altering internal gear ratios.

Installation follows the stock wave of fasteners and locating points so it can be used with the original spur and pinion arrangement. Check for required clearances if you run low-profile suspension setups or aftermarket motor mounts, and confirm alignment of the output shafts before final torqueing. No additional cutting or trimming should be necessary when used with listed compatible chassis.

In tuning terms this part helps keep the rear end geometry consistent under load, which can reduce drivetrain lash and contribute to more predictable throttle response during aggressive cornering or jumps. It is an RC-scale hop-up intended only for model vehicles and not for any real-world application.

Specifications

  • Item: Rear gear box housing
  • Material: Anodized aluminum
  • Model Number: JR-THS13-RD
  • Compatibility: Tamiya Hotshot, Super Hotshot, Boomerang, Bigwig

Compatible Models

  • Tamiya Hotshot
  • Tamiya Super Hotshot
  • Tamiya Boomerang
  • Tamiya Bigwig

Choose this aluminum rear gear box when you need a stiffer, longer-lasting rear housing that preserves stock fitment and supports tuning aimed at improved drivetrain consistency.

It replaces the stock plastic rear gear box housing, using the same mounting points and fasteners for the listed Tamiya chassis.
No change to internal bearings or gear sizes is typically required, but verify bearing seat dimensions and shaft alignment during installation.
For standard setups no trimming should be necessary; check clearances if using low-profile suspension or non-stock motor mounts.
Basic hand tools such as a set of hex drivers and a torque-aware driver for final tightening are sufficient; avoid over-torquing aluminum fasteners.

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