TRX4 Front Knuckle Inner Set TRX4021 compatible with TRAXXAS by GPM  [TRX4021]

Precision 6061 T6 Front Knuckle Inners for TRX4

This inner knuckle arm set is produced for TRAXXAS TRX4 Trail Crawler platforms and supports steering geometry while ensuring correct engagement of internal knuckle gears. Machined from 6061 T6 aluminium and refined with a 3D CNC finish, the components offer precise fit and a robust metal feel suited to trail and rock crawling applications.

The set contains the inner knuckle parts plus stainless steel fasteners to replace factory plastic hardware where greater rigidity and wear resistance are preferred. Use manual numbers 8252 and 8251 as references when confirming part orientation or sourcing matching service parts.

As an upgrade these aluminium inners reduce flex in the steering assembly and can influence front pinion and spur alignment. After installation, inspect gear mesh and wheel alignment to preserve smooth gear engagement and predictable steering under load.

Opt for these aluminium knuckle inners when you need a metal replacement that maintains alignment and improves steering consistency on demanding trails.