The GPM TRX4021BX brass front knuckle arms are made for Traxxas TRX-4 variants like the Defender, Tactical Unit and Ford Bronco. These components are built to give a precise fit and easy pivoting, enhancing chassis balance and wheel control. As external weights, each knuckle is 50g, helping tyres bite better on gravel, grass and uneven trails.
Part location: Inner case of the front knuckle
Copyright © 2008-2025 rcjaz.co.nz All rights reserved