TRAXXAS TRX4 Trail Crawler Front C Hub King Pins Upgrade TRX4004S by GPM  [TRX4004S]

This set of scale king pins is designed to steady the front knuckle and wheel hub movement on TRAXXAS TRX4 Trail Crawler front C hub assemblies. The stainless steel pins offer a snugger fit with C hubs to cut slop and deliver improved steering feedback while maintaining smooth hub operation under crawling loads.

Supplied as a four piece set, the pins suit the front C hub configuration on TRX4 Trail Crawler models. The polished pin surface and king pin profile reduce internal friction so steering inputs stay consistent and wheel alignment holds during slow technical manoeuvres.

Fitment note: remove the C hub assembly to change the front king pins, slide the stainless pins into the knuckle and hub bores, then reassemble and verify free spin without play. As with any scale upgrade, confirm compatibility with your existing hubs before final installation.

Tuning role: a straightforward hop-up to tighten front-end tolerance and reduce unwanted knuckle movement, beneficial when refining slow-speed steering on rocky lines.