Traxxas TRX-4 1.9" Aluminium Wheel Set ZSP049 by GPM  [ZSP049]

1.9" aluminium crawler wheels - precision 24pcs kit

This precision aluminium wheel set is specified for 1.9" crawler builds and supplied as a 24 piece kit for serious hobbyists and tuners. The aluminium components provide improved structural strength and added rotational mass compared with typical plastic wheels, with each assembled wheel weighing approximately 170g and contributing measurable inertia for technical crawling lines.

The kit includes machined wheel discs, outer and inner rim sections, centre caps and flat head M2.5x7 screws for assembly, permitting secure fastening of rim halves with the supplied hardware. The wheels are designed for 12mm hex mounting interfaces commonly used on crawler platforms; confirm hex diameter and hub geometry before installation to ensure correct fit and preload.

From a tuning and engineering perspective, these wheels act as a direct structural upgrade to stock wheels while providing additional rotational mass to stabilise momentum across obstacles. Installation requires standard 12mm hex mounting, accurate torque on the M2.5 fasteners and considered use of thread locking compounds to prevent fastener backout during demanding trail operation.

Recommended for builders seeking CNC-grade aluminium rims for 1.9" crawlers on 12mm hex hubs; plan suspension and final drive settings to accommodate the increased rim mass for consistent low speed control.