TRAXXAS TRX4 Trail Crawler Aluminum Front Knuckle Arms by GPM TRX4021  [TRX4021]

Front Knuckle Arms for TRX4 Trail Crawler

This is an RC-scale aluminum front knuckle inner arm set produced for TRAXXAS TRX4 Trail Crawler platforms, designed to support steering geometry and the engagement of internal knuckle gears. The parts are machined from 6061 T6 aluminum and finished with a 3D streamlined CNC process to provide a precise fit and a solid metallic feel without implying any real-vehicle use.

The kit contains inner knuckle pieces and a set of stainless steel fasteners to replace factory plastic components where increased stiffness and wear resistance are desired. The listed manual numbers are 8252 and 8251 for reference when matching service parts or verifying orientations during assembly.

As a tuning component, these aluminum knuckles influence steering feedback and play a role in pinion and spur alignment at the front axle. When replacing stock parts, verify gear mesh and wheel alignment after installation to maintain smooth gear engagement and predictable steering response on RC trails and technical rock courses.

Choose these knuckle arms when seeking a durable, metal replacement for the stock front knuckle inners to improve longevity and maintain consistent steering under load on RC trail and crawler setups.