HPI Baja Rear Knuckle Arm BJ022 Technical Upgrade by GPM  [BJ022]

HPI Baja Alloy Rear Knuckle Arm - GPM BJ022
Price:
USD$52.00
Brand:
GPM
Model:
BJ022
GTIN:
4894538023145
Condition:
Brand New
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alt="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022" title="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022"
alt="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022" title="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022"
alt="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022" title="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022"
alt="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022" title="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022"
alt="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022" title="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022"
alt="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022" title="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022"
alt="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022" title="HPI Baja Alloy Rear Knuckle Arm - GPM BJ022"

Precision alloy knuckle arm for HPI Baja tuning and durability

This machined aluminium rear knuckle arm is a replacement component intended for HPI Baja buggies, designated model BJ022. CNC-style machining yields a consistent mounting surface for the rear hub and suspension link interfaces, improving repeatability for performance setup.

From an engineering perspective the component shifts load paths through the rear suspension, reducing local flex at the hub mounts during acceleration, braking and lateral loads. The result is more stable toe and camber behaviour under dynamic conditions, which assists informed tuning and setup changes.

Installation requires routine disassembly: remove the stock knuckle, reuse compatible bearings or inserts, and fasten the aluminium arm to the hub and link assemblies using existing hardware. Validate clearance and suspension articulation before high-speed operation. This item is specified as a performance upgrade for maintenance and tuning workflows rather than a geometry alteration.

Specifications

  • Item: HPI Baja Alloy Rear Knuckle Arm
  • Material: Aluminum alloy
  • Model Number: BJ022
  • Compatibility: HPI Baja

Use BJ022 when you need a precision aluminium knuckle to reduce mount flex and achieve repeatable rear suspension responses during tuning and testing.

Does BJ022 require reworking of mounts or shims?

No rework is normally required; fitment is intended to match stock geometry. Inspect and transfer any seals, bearings or shims as needed to maintain correct stackup.

How does the material choice affect dynamic behaviour?

Aluminium increases local stiffness at the hub mount, reducing compliance. This tends to produce clearer feedback during tuning but can move stress into adjacent components under extreme impact.

Recommended installation checks?

Confirm bearing fit, torque hardware to specification, and verify full suspension travel and wheel rotation before track use. Re-check torque after initial break-in runs.

Is BJ022 suitable for competition and everyday use?

Yes, BJ022 is engineered to provide consistent mounting for both setup work and regular running, offering a balance of durability and stiffness for hobbyist and club competition use.