This aftermarket rear swing arm pull rod is produced for TAMIYA BB-01 applications and manufactured by GPM as BBX05657. CNC-stable 7075 aluminium is used to offer a high strength-to-mass ratio while preserving the OEM ball-post footprint so the component integrates with standard suspension link geometry.
The profile incorporates an arcuated seating interface at the steel pivot ball to improve retention during high dynamic loads and to minimise pivot disengagement. Combined with a hard-anodized 7075 surface, the design aims to yield repeatable pivot behaviour and stronger rear-end feedback under rigorous operation.
Installation requires removing the original BB-01 rear pull rod and fitting this unit, confirming ball-post alignment and full thread engagement before final torque. As a tuning component the rod will influence rear roll centre and transient response; validate clearances and tune in measured steps when adjusting vehicle handling.