Axial SMT10 Front Knuckle Arms 6061-T6 Aluminum - MJ021 by GPM  [MJ021]

AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021
Price:
CAD$33.01
Brand:
GPM
Model:
MJ021
GTIN:
4894538285918
Condition:
Brand New
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alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"
alt="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021" title="AXIAL Racing SMT10 Aluminum Front Knuckle Arms-10pc set - GPM MJ021"

6061-T6 front knuckle arms

This RC-scale front knuckle arm set is made for the Axial SMT10 platform and sold as model MJ021. Machined from 6061-T6 aluminum, these parts replace stock plastic arms to increase stiffness and wear resistance while retaining precise steering geometry for scale stadium truck setups.

The assembly includes hardened king pins that pair with Delrin bushings at the bearing interfaces to reduce lateral play and preserve smooth steering action. Supplied hardware supports mounting and stabilising the CVD so steering inputs remain faithful without changing the steering ratio or factory geometry.

Included items and reference numbers remain as listed in the original parts description: king pins, stainless steel round head screws (3x18), 3mm silver lock nuts, and manual reference AXA31316. These components are intended as aftermarket replacements and upgrades only.

Compatible Models

  • SMT 10 Grave Digger AX90055, AX90057

Fit these knuckle arms to reduce CVD play and achieve a firmer, more consistent steering feel on Axial SMT10 Grave Digger builds; confirm correct fastener torque and fitment against your chassis manual before first run.

What hardware arrives with the MJ021 knuckles?

The package lists king pins, stainless 3x18 round head screws, 3mm silver lock nuts, and the manual reference AXA31316 as the supplier notes.

Will these arms stiffen steering feel?

Yes, the 6061-T6 construction reduces flex compared with stock plastic arms, which typically results in a firmer steering response and less play around the CVD.

Are Delrin bushings included or required?

The design interfaces with Delrin bushings at the bearing locations to minimise play; confirm your chassis uses compatible bushings or install as required for the intended fit.

Do these change steering geometry?

No intentional geometry change is introduced; these arms stabilise the CVD and reduce play but steering ratio remains determined by your existing linkages and servo setup.

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