TRAXXAS TRX4 Rear Knuckle Inner Set 6061 T6 TRX4022 by GPM  [TRX4022]

Precision machined rear knuckle inners for TRX4 axles

The TRX4022 rear knuckle inner set is a CNC machined aluminum replacement sized for TRAXXAS TRX4 Trail Crawler axles, engineered to stabilise the inner gear stack and maintain repeatable mesh under high torque, low speed conditions.

Manufactured from 6061 T6 billet and finished with precision CNC operations, the components deliver consistent hole placement and flat mating surfaces to reduce alignment variation. The kit contains the aluminium inner pieces and stainless steel cap head screws matched to the parts for reliable assembly.

From a tuning perspective, the stiffer aluminium inners reduce lateral deflection at the knuckle junction and help preserve gear geometry during technical crawling. Adopt standard workshop practice: confirm screw engagement depth, finger-start fasteners, then torque to your vehicle recommended settings while checking gear mesh after final assembly.

A precision upgrade for competitive crawlers and serious trail rigs where reduced knuckle flex and consistent gear engagement are required; validate fit and fastener lengths before final installation.