The JAZRIDER JR-TRX423-BK aluminium centre gear box is designed as a straightforward replacement for the stock plastic housing on Traxxas TRX-4 models. It focuses on real world durability and simple installation for hobbyists who run their rigs regularly.
Aluminium improves resistance to repeated impacts and long term wear compared with polymer housings. That means fewer field failures and less downtime for routine crawling and bashing.
The housing is dimensioned to match TRX-4 mounting points and accepts standard bearings and seals. Installers should check bearing condition and hand-tighten fasteners to spec for correct gear mesh.