HPI Baja Rear Upper Arm Alloy with Nylon Ball Ends BJ057 by GPM  [BJ057]

Rear upper linkage for HPI Baja

This RC-scale rear upper arm is supplied for HPI Baja platforms and is built from an alloy main body with black nylon ball ends as indicated by the model BJ057. It is intended as a replacement or an upgraded rear suspension link while keeping the same mounting interfaces found on Baja setups.

Alloy construction gives the arm the rigidity needed to preserve link geometry, and the nylon ball ends help resist wear and reduce noise at pivot points. Fitting typically involves removing the existing rear linkage hardware, transferring fasteners where appropriate, and confirming clearance at the shock towers and rear hubs. Ensure screw threads are fully engaged and that the ball ends rotate freely but remain secure.

As a direct upper rear linkage replacement, this arm will only influence toe and camber when its geometry or mounting position differs from stock, so always recheck wheel alignment after installation. Routine service should include inspection for play at the ball sockets and lubrication or replacement of worn components.

Fit the BJ057 alloy rear upper arm when you need a like-for-like replacement or a matched alloy linkage on HPI Baja cars, and verify suspension alignment after fitting.