TRAXXAS TRX-4 23mm Brass Wheel Hex Adapter Upgrade TRX4010X/23M by GPM  [TRX4010X/23M]

23mm Brass Hex Adapters for Trail Use

This set of 23mm brass wheel hex adapters is made for TRAXXAS TRX-4 style trail crawlers that benefit from a wider stance and extra wheel weight to stabilise slow-speed lines. Each adapter is machined from brass and has a 23mm hex face, offering a thicker profile than the factory hex to push the wheel offset outward and close the gap to the wheel arch.

Key hardware included in the kit: Hex Adapter 4pcs, Stainless Steel Screw Shaft M4x2.5x11 4pcs, Shims 5mm 4pcs, 5mm Metal Washer 4pcs, Stainless Steel Hex Socket Screw 20mm 4pcs. The supplier notes an individual adapter mass of about 17g each, so each wheel sees a measurable increase in hub weight.

Fitting is simple on compatible hubs: remove the stock hex, place the brass adapter on the axle, fit shims or washers to fine tune offset, and fasten with the supplied M4 shafts and hex screws. Verify correct thread engagement and wheel alignment after installation; the increased width can require minor trimming or additional spacers depending on wheel and tyre clearance.

Tuning impact: the 23mm profile widens track and raises hub unsprung mass, which can reduce rollover tendency on steep side angles and help with low-speed traction. Expect altered suspension response and steering feedback, so adjust damper valving and spring rates for best results.

The brass hex adapters deliver a complete, hardware-ready option to widen track and add hub weight on TRX-4 based crawlers with minimal fitment compromise.