Axial SMT10 CNC Machined Front Knuckle Arms MJ021 by GPM  [MJ021]

Machined 6061-T6 front knuckles

This front knuckle arm set targets Axial SMT10 chassis and is designated MJ021. Precision machined from 6061-T6 aluminium, the components are intended to replace OEM plastic arms where greater rigidity and improved wear life are required while preserving factory steering geometry for scale stadium truck configurations.

The assembly employs hardened king pins that locate against Delrin bushings at the bearing interfaces to reduce endplay and ensure consistent steering articulation. The supplied stainless steel hardware secures the knuckles and provides CVD stabilisation to improve steering input fidelity without modifying steering ratio or link geometry.

The parts included follow the original reference: king pins, stainless steel round head screws (3x18), 3mm silver lock nuts, and manual reference AXA31316. These items are designed as precision aftermarket upgrades and should be installed per chassis service procedures.

Use MJ021 knuckles to reduce CVD-related play and achieve a firmer, more repeatable steering response on Axial SMT10 Grave Digger builds; verify alignment and torque specs during assembly to maintain long term reliability.