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

Rear lower arm for HPI Baja

This alloy rear lower arm is an RC-scale replacement part intended to restore or refine rear suspension geometry on HPI Baja buggies. It focuses on mechanical clarity, using a single material reference from the product name to describe durability and stiffness characteristics relevant to suspension tuning and routine repair.

The arm's role is straightforward: replace a damaged plastic arm, reduce flex in critical mounting points, and provide a stable mounting surface for the hub and linkage. When fitting this part check existing mounting hardware and note that it is supplied as an individual arm component, intended to work with stock HPI Baja rear suspension assemblies.

Installation notes: verify ball stud, hinge pin, and mount alignment before tightening, use thread-lock where appropriate on metal-to-metal fasteners, and cycle the suspension through its travel to confirm free movement without binding. For tuning, changing to a stiffer lower arm can shift handling balance by reducing compliance at the rear, which should be considered alongside shock valving and sway bar adjustments.

For HPI Baja owners seeking a metal replacement for a rear lower arm, this alloy unit provides a direct swap option that supports repair and suspension setup work without altering the vehicle's intended mounting geometry.