HPI Baja Alloy Front Upper Arm BJ054 Precision Upgrade by GPM  [BJ054]

HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054
Price:
USD$39.00
Brand:
GPM
Model:
BJ054
GTIN:
4894538024074
Condition:
Brand New
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alt="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054" title="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054"
alt="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054" title="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054"
alt="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054" title="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054"
alt="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054" title="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054"
alt="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054" title="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054"
alt="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054" title="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054"
alt="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054" title="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054"
alt="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054" title="HPI Baja Alloy Front Upper Arm With Nylon Black Ball Ends - GPM BJ054"

Precision front upper arm for HPI Baja

The BJ054 front upper arm is an engineered aftermarket component for the HPI Baja platform that couples an aluminium alloy beam with moulded nylon black ball ends to optimise front-end stiffness and pivot compliance under dynamic loads.

The arm replaces the OEM plastic part and is intended to interface with stock suspension carriers and hubs without chassis modification. Nylon ball ends are specified to reduce pivot bind while the alloy section maintains suspension geometry through heavy braking, landings and high-speed cornering.

Installation follows standard suspension service procedures: remove the wheel assembly, separate the original upper arm mounting hardware, install BJ054 using existing hinge pin locations or supplied mounts, and confirm full steering sweep. Post-install inspection should include torque checks and verification of ball seating to ensure reliable operation.

Specifications

  • Item Front upper arm
  • Material Aluminum alloy arm with nylon black ball ends
  • Model Number BJ054
  • Compatibility HPI Baja platform

Engineered for precision and durability, this alloy upper arm is suited to users seeking firmer front geometry and reduced joint wear while retaining stock mounting and serviceability.

What checks confirm correct fitment?

Measure hinge pin spacing and verify ball stud alignment against the stock arm to ensure the BJ054 matches your vehicle's front suspension geometry.

Recommended inspection interval?

Inspect the arm and nylon ball ends after the first few runs and then at regular maintenance intervals or after major impacts to detect wear or loosening.

Can I use the stock hardware?

In most cases stock hinge pins and fasteners are compatible; confirm that screw lengths and spacer configurations match during installation.

Does aluminium affect suspension tuning?

A stiffer alloy arm reduces flex-related geometry shifts, allowing more predictable tuning of shock and sway settings to refine handling.