HPI Baja Rear Knuckle Arm BJ022 Alloy by GPM  [BJ022]

Rear alloy knuckle arm for HPI Baja vehicles

This alloy rear knuckle arm is an RC-scale replacement part for HPI Baja buggies, catalogued as model BJ022. The machined aluminium component replaces the standard knuckle to provide a stiffer, more consistent mounting face for the rear hub and suspension link mounts.

Functionally the knuckle alters how forces transmit through the rear suspension during acceleration, braking and cornering. Installing an alloy arm cuts down flex at attachment points, helping to keep toe and camber stable under load and allowing suspension tuning to deliver repeatable results.

Fitment is straightforward for experienced hobbyists: remove the factory knuckle, move over any bearings or inserts that fit, then secure the alloy arm to the hub and link mounts with the existing fasteners. Check for any interference, ensure free wheel spin and full travel, then proceed to setup. This is offered as an upgrade for tuning and maintenance rather than a change to geometry.

Fit this alloy rear knuckle when you need firmer mounting points and steadier rear suspension behaviour for tuning and regular maintenance on HPI Baja cars.