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

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

The JR-THS13-LB aluminum rear gear box replaces the original plastic housing with a machined blue-anodized component, delivering a firmer mounting point for gears and bearings compared with the stock part.

Function and fitment: this rear gearbox housing locates the existing spur and pinion alignment in the chassis rear. It is intended for users wanting reduced drivetrain flex or testing alternate gear mesh and bearing setups.

Installation guidance: the housing retains the stock mounting footprint for the listed TAMIYA models so installation uses the original bolt pattern and access points. Routine inspection and bearing replacement can be carried out via the same removable cover points.

Specifications

  • Item: Aluminum rear gear box housing
  • Material: Aluminum, blue anodized finish
  • Model Number: JR-THS13-LB
  • Compatibility: Tamiya Hotshot, Super Hotshot, Boomerang, Bigwig

As a direct-fit metal alternative for classic TAMIYA Hotshot-series chassis, this aluminum rear gear box offers a straightforward way to stiffen the gearbox mounting while preserving original geometry.

Can I swap this in for the standard plastic housing?

Yes. The housing is designed as a direct replacement using the stock mounting points and layout for the Hotshot-series vehicles.

What are the expected benefits of switching to aluminum?

Switching to an aluminum housing reduces flex, providing a firmer gearbox anchor that can improve drivetrain consistency and durability under load.

Is the finish durable for regular use?

The blue anodized finish offers surface protection and resists corrosion; normal wear may affect appearance but not structural performance.

Should I expect any changes to gear spacing?

The component preserves the original internal layout, so standard gear spacing is maintained; always verify gear mesh during the first reassembly.