TRAXXAS TRX4 Crawler Wheel and Tyre Upgrade Aluminum 6-Pole with 21mm Hex TRX4689/21MM by GPM  [TRX4689/21MM]

Upgrade kit for TRX4 trail crawling

This 12pcs wheel and tyre set is an aftermarket, scale-oriented component built for TRAXXAS TRX4 Trail Crawler platforms. The kit pairs aluminium 6-pole wheels with dedicated crawler tyres and includes a 21mm hex adapter to mate cleanly with TRX4 hubs, aimed at fit and tuning rather than visual modification alone.

The intent is functional: aluminium wheel hubs offer a stiffer mounting face than typical plastic wheels, while the crawler tyres focus on traction and controlled grip for slow-speed technical routes. The 21mm hex adapter supports vehicles that take that hex size without the need for irreversible axle or hub changes.

Fitment tips: secure wheels with the vehicle's standard fasteners, check hex adapter alignment before each outing, and inspect hub interfaces for interference with beadlocks or wheel hardware. Fine-tune tyre seating and wheel offset to protect suspension travel and avoid rubbing on chassis or shock mounts.

Ideal for builders seeking a tougher wheel mounting point and better low-speed traction; always trial-fit components on your TRX4 hubs before trail use.