TAMIYA BBX BB-01 CNC 7075-T6 Transmission Housing BBX038 by GPM  [BBX038]

Precision CNC housing for BBX BB-01

Engineered as an aftermarket upgrade, this transmission housing is specified for the TAMIYA 1/10 BBX BB-01 chassis and designated BBX038. Fabricated from 7075-T6 aluminium and CNC finished, the housing reduces internal clearance to improve spur and pinion coaxial alignment and minimise lateral endplay under torque.

The rigid aluminium shell increases gearbox stiffness and stabilises gear positioning during dynamic loads, which helps preserve consistent drive engagement and predictable steering response. This part is intended for hobbyist RC systems only.

Installation follows BB-01 service norms: remove the original housing, transfer precision bearings and internal components as needed, mount the CNC housing, and secure with factory fasteners. Perform final gear mesh and endplay verification and adjust shims or mesh before completing assembly to ensure correct backlash and tooth contact pattern.

For precision-minded hobbyists and racers, this CNC machined 7075-T6 housing offers improved gearbox stability, reduced play and reliable fitment when installed and set up correctly.