TAMIYA BBX BB-01 7075-T6 Aluminium Gearbox Housing BBX038 by GPM  [BBX038]

Aftermarket gearbox housing for BBX BB-01

This 7075-T6 aluminium transmission housing is an aftermarket upgrade for the TAMIYA 1/10 BBX BB-01 chassis, sold as BBX038. It is machined to reduce internal clearance around the spur and pinion, helping the gearbox maintain correct alignment during RC operation.

The tighter internal fit improves drivetrain consistency and can translate to steadier steering response on rough tracks. This product is intended for hobby RC use only and should not be used in any full scale application.

To fit, remove the stock housing and move bearings or other internals across as required, then mount the replacement housing and secure with the original hardware. Always verify gear mesh and endplay and make small adjustments before final assembly.

For BB-01 drivers seeking a robust aluminium alternative to the stock housing, this 7075-T6 unit reduces play and helps sustain consistent gear engagement over extended running.