GPM Racing Aluminium 7075-T6 Front Knuckle Arms (Larger Inner Bearings) for Traxxas 1/7 Unlimited Desert Racer-85076-4 (UDR021N)

Precision CNC knuckle arms for TRAXXAS Unlimited Desert Racer 1/7

Engineered for high-precision fitment on the TRAXXAS Unlimited Desert Racer 1/7, these front knuckle arms are CNC machined from 7075-T6 aluminium for improved stiffness and consistent geometry under load. The design supports larger inner bearings supplied with the kit and uses multiple tie-rod mounting points to adjust steering throw and ackermann without altering the steering linkage.

Installation is straightforward using the provided Grade 12.9 fasteners and pins for a direct replacement of the stock knuckles. The knuckle mounting allows fine adjustment of arm angle to refine steering characteristics for different running conditions. The hardware and bearing items listed below reflect the parts shipped in the package.

Packing includes

• Knuckle arms – 2pcs
• Grade 12.9 Black round head screws 3×25 – 2pcs
• Grade 12.9 black round head screws 3×23 – 4pcs
• M4*2.5*11 Screw pin – 2pcs
• 3mm Lock nuts – 2pcs
• Bearing 6x16x5 – 2pcs
• Bearing 15x24x5 – 2pcs

Original Name / Part No:

Front knuckle arms

Compatible Models

• TRAXXAS-1/7 UNLIMITED DESERT RACER PRO-SCALE 4X4-85076-4

A precision upgrade for tuners seeking CNC-machined durability and consistent steering geometry, suitable for setups that require larger inner bearings and incremental steering adjustments.

Are the knuckles CNC machined and ready to install?

Yes, the knuckles are CNC machined from 7075-T6 aluminium and supplied with Grade 12.9 screws and pins for direct installation on the compatible TRAXXAS model.

What tolerance benefits does CNC machining provide here?

CNC machining delivers consistent geometry and tighter mating surfaces, which helps maintain alignment under load and improves repeatability across builds and repairs.

Which bearing sizes and counts are included?

The packing list specifies Bearing 6x16x5 (2pcs) and Bearing 15x24x5 (2pcs) which are provided to match inner and outer knuckle locations.

How should I approach steering setup with these knuckles?

Start with the neutral tie-rod position and incrementally test other holes to map changes in throw and ackermann; small knuckle angle adjustments can be used to fine-tune oversteer or understeer tendencies. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.