HPI Bullet 3.0 MT/ST Front Alloy Knuckle Arm BMT021 by GPM  [BMT021]

HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021
Price:
USD$15.90
Brand:
GPM
Model:
BMT021
GTIN:
4894538027914
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alt="HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021" title="HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021"
alt="HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021" title="HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021"
alt="HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021" title="HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021"
alt="HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021" title="HPI Bullet 3.0 Mt And St Alloy Front Knuckle Arm - 1pr set - GPM BMT021"

Precision front knuckle arm for Bullet 3.0 steering assemblies

This CNC-friendly alloy front knuckle arm is presented as a 1 pr set and serves as a durable aftermarket replacement for HPI Bullet 3.0 MT and ST chassis. The component is intended for hobbyists seeking improved joint rigidity and cleaner bearing seats compared with stock plastic assemblies.

In operation the knuckle accurately locates the hub and transfers servo input through linkages to wheel direction. Using an alloy arm reduces lateral flex at ball joints and provides a firmer mounting surface for pins, bushes and bearings used in typical Bullet 3.0 steering systems.

Professional fitment notes: verify left and right orientation, inspect and replace worn pins and bushings where necessary, and confirm steering geometry after installation. Use appropriate hex drivers and pliers, torque fasteners to a safe RC level, and ensure bearings rotate without binding before final setup.

Specifications

  • Item: Front knuckle arm, 1 pr set
  • Material: Alloy
  • Model Number: BMT021
  • Compatibility: HPI Bullet 3.0 MT and ST

Recommended for precision-focused upgrades or repair work on HPI Bullet 3.0 MT/ST front ends where alloy stiffness and repeatable joint location are priorities.

What hardware should I inspect before fitting

Check pins, bushes and bearings for wear; replace any components that show play to maintain the improved precision the alloy knuckle provides.

Does alloy affect impact durability

Alloy increases rigidity and joint stability but can transfer impact loads differently than plastic; inspect surrounding hardware and consider shock and bumper protection for heavy use.

Any setup changes needed after swapping knuckles

Recheck steering travel, binding points and toe settings; small transmitter trim adjustments may be required to centre the steering following installation.