This is an RC-scale transmission housing designed for the TAMIYA 1/10 BBX BB-01 chassis, supplied as an aftermarket part produced by GPM (BBX038). The component locates at the transmission housing area and its primary role is to stabilise the gearbox assembly so the spur and pinion run with reduced play.
The housing is machined to reduce internal clearance around the gears, which helps maintain alignment under load and contributes to smoother steering feedback from the drivetrain. It is intended for hobby use on the specified BBX BB-01 chassis and not for any real vehicle application.
Installation is straightforward for users familiar with BB-01 service: remove the stock housing, transfer any bearings or internal components as needed, then fit the GPM housing in the transmission area and secure with the original fasteners. Check gear mesh and endplay after fitting and make minor adjustments before final assembly.
For BB-01 owners seeking tighter gear alignment in the transmission area, this aluminium housing provides a durable replacement to help reduce play and maintain consistent gear engagement during RC operation.
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