TRAXXAS E-MAXX Alloy Front/Rear Knuckle Arm EMX2021 by GPM  [EMX2021]

Price:
USD$26.90
Brand:
GPM
Model:
EMX2021
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Precision alloy knuckle arms for E-MAXX platforms

This RC-scale front and rear knuckle arm set is manufactured for the TRAXXAS E-MAXX chassis, model EMX2021. Machined aluminium construction is used to provide improved wear resistance and stiffness versus injection-moulded parts, supporting more consistent steering geometry under load for 1/8 scale electric monster truck applications.

The knuckles serve to locate the steering hub and transfer suspension loads into the upright and overall suspension geometry, while also affecting steering response when used with different turnbuckle lengths or shock valving. Upgrading to aluminium reduces elastic deformation and improves repeatability of toe and camber during aggressive driving or tuning sessions.

Installation follows standard hub removal and knuckle replacement procedures. Verify ball stud engagement, steering stop clearance and full suspension articulation after fitment. Use controlled torque values and apply thread locker where metal fasteners mate to avoid loosening under vibration.

Specifications

  • Item: TRAXXAS E-MAXX Alloy Front/Rear Knuckle Arm - 1pr set
  • Material: Aluminum alloy
  • Model Number: EMX2021
  • Compatibility: TRAXXAS E-MAXX

EMX2021 knuckles are aimed at hobbyists seeking a precision, stiffening upgrade that supports detailed setup work and higher load cycles without the compliance of stock plastic components.

What are the material and machining details?

Constructed from aluminium alloy and finished with CNC-friendly operations to ensure consistent geometry and repeatable fitment across the set.

How does stiffness affect tuning?

Increased stiffness reduces component deflection, which stabilises steering inputs and makes incremental adjustments to toe and camber more predictable during setup work.

Any recommended installation practices?

Use the original mounting pattern, verify ball stud preload and apply low-strength thread locker on metal-to-metal screws. Recheck torque after a short test run.

Will these alter suspension geometry permanently?

They are dimensionally equivalent to stock knuckles; geometry changes are caused by reduced flex rather than a change in nominal mounting points.