TRAXXAS TRX-4 HD 12mm Brass Wheel Hex Adapter for Scale Crawler Wheels - JR-TRX417-5MM by Jazrider  [JR-TRX417-5MM]

12mm Brass Hex Insert for TRX-4 HD Hubs

This RC-scale wheel hex adapter is made for TRAXXAS TRX-4 HD applications and is identified as JR-TRX417-5MM. The part is a brass 12mm hex insert with a 5mm thickness designed to mate with TRX-4 HD wheel hex hubs and common scale crawler wheels.

Installation is straightforward: the adapter slips over a 12mm wheel hex hub to locate and retain the wheel on the axle interface. It works as a direct replacement or spare hop-up where a brass insert is preferred; consider the increased mass and the 5mm spacer effect when setting wheel position and static balance.

For tuning this adapter gives two practical benefits on a scale trail crawler: a durable metal contact surface at the wheel-to-hub junction, and a fixed 5mm offset that can be used to correct minor clearance or alignment issues. Use only on compatible TRX-4 HD assemblies as an aftermarket accessory.