Tamiya TB04 Aluminium Front Arm Bulk by GPM TB4008  [TB4008]

Aluminium front arm bulk for TB04

This aluminium front arm bulk is an aftermarket RC-scale replacement part produced by GPM for the Tamiya TB04 platform. It replaces the stock plastic bulkhead in the front suspension assembly and is intended to provide a stiffer, more repeatable mounting point for steering and suspension linkages on TB04-based cars.

As an aluminium component, the part focuses on tuning stability rather than altering geometry. Swapping from plastic to metal bulkheads reduces flex under load, which can help with consistent steering response during cornering and when adjusting camber or caster via the front arm mounts. The piece integrates with the existing TB04 front mounting locations and uses the chassis' standard hardware points.

Installation is a direct replacement at the TB04 front end, and the part should be inspected for fit against your chassis and other hop-ups before use. This item is an RC-scale accessory designed for model tuning and durability tests on TB04 cars, do not use for full-size vehicle applications.