GPM TRX4021 For TRAXXAS TRX4 Front Knuckle Inner Arms  [TRX4021]

6061 T6 Front Knuckle Inner Arms for TRX4 Trail Crawler

This RC-scale inner knuckle arm set is produced for TRAXXAS TRX4 Trail Crawler platforms and is intended to stabilise steering geometry while supporting internal knuckle gear engagement. The components are CNC machined from 6061 T6 aluminum and finished with a 3D streamlined process to deliver accurate fitment and a solid metal feel suitable for trail and rock crawling use.

The kit includes the inner knuckle pieces plus a selection of stainless steel fasteners to replace factory plastic parts where greater stiffness and wear resistance are wanted. Refer to manual numbers 8252 and 8251 when checking part orientation or matching service components during installation.

As a tuning item these aluminum inners help reduce flex in the steering assembly and can affect pinion and spur alignment at the front axle. After fitting, verify gear mesh and wheel alignment to keep smooth gear engagement and predictable steering on technical courses.

Choose these aluminum inner knuckles to replace plastic inners when you want improved longevity and steadier steering response under load on trail rigs.