TAMIYA TB-04 High Strength Rear Arm Bulk TB4009 by GPM  [TB4009]

High strength rear bulk for TB-04

This aluminium rear arm bulk is produced as a replacement for the TB-04 plastic rear bulk and is supplied as one set for upgrade. It creates a more secure mounting location for rear arms and related suspension components to reduce flex during dynamic events.

Installation follows standard replacement steps: remove the existing plastic bulk, transfer bearings and link hardware where needed, and fit the aluminium bulk with the original fasteners. Basic hand tools and a hex driver set are normally all that is required; observe correct torque settings to keep the chassis true.

As a tuning item the TB4009 helps stabilise rear geometry so suspension changes are more repeatable. Drivers should test in short runs and make incremental shock or anti-roll bar changes to restore the handling balance they prefer.