HPI Baja Rear Lower Arm CNC Alloy BJ056 by GPM  [BJ056]

Precision rear lower arm for HPI Baja

This CNC-friendly aluminium rear lower arm is specified as a direct replacement to restore accurate rear suspension geometry on HPI Baja buggies. It is intended for hobbyists seeking improved stiffness at the lower control point while retaining stock mount locations.

The arm reduces flex at the hub and linkage mounting areas and is provided as a single replacement component. Fitment assumes use with original HPI Baja hinge pins, ball studs, and rear suspension assemblies.

Fitting protocol: verify hinge pin alignment and ball stud seating prior to final torque, use appropriate thread-lock on ferrous fasteners, and cycle suspension travel to confirm unobstructed movement. Be aware that the reduced compliance of a metal arm can shift rear traction characteristics and should be evaluated alongside damper valving and anti-roll bar setup.

Engineered for durability and repeatable geometry, this alloy lower arm suits repair and setup work where consistent rear behaviour is required.