Scale 1-inch Beadlock Wheel Upgrade TRX4MZSP1216 by GPM  [TRX4MZSP1216]

Aluminium 1-inch beadlock rims tailored for TRX4M use

The GPM TRX4MZSP1216 kit is a machined aluminium beadlock wheel set sized for 1-inch internal-diameter tyres and aimed at scale crawling models based on TRX4M and comparable 1/14 to 1/24 platforms. These metal rims enhance realism and provide firmer screw retention than typical plastic wheels.

Compatibility and fit: these rims call for tyres with a 1-inch inner diameter and are supplied as separate components for owner assembly. The central clamp ring carries venting to help seat the tyre and make trimming easier. The product notes list compatible family parts such as TRX4MZSP19A/B through TRX4MZSP24A/B for matching tyres and adapters.

Installation and tuning: included are the wheel halves, fastening hardware and metal weighting feeders; accurate assembly and even clamp torque are key to bead security and wheel balance. Use the included weights to adjust rim mass and tune low-speed traction when tackling scale obstacles.

For model enthusiasts seeking tougher, more authentic wheels for technical trail work, these aluminium beadlocks are a useful upgrade; verify tyre ID and be ready for hands-on assembly and balancing.