TRX4M Scale 1-inch Beadlock Rims TRX4MZSP1216 by GPM  [TRX4MZSP1216]

Aluminium 1-inch beadlock rims built for TRX4M-style crawlers

The TRX4MZSP1216 kit from GPM contains machined aluminium beadlock wheel components sized for 1-inch internal diameter tyres and designed with small-scale crawlers in mind. These metal rims provide improved surface detail and firmer clamp points compared to original plastic wheels.

Compatibility notes: wheels require tyres with a 1-inch inner diameter and are supplied as parts for the modeller to assemble. The centre ring includes ventilation slots to help with tyre seating and trimming. The kit documentation lists matching family parts such as TRX4MZSP19A/B through TRX4MZSP24A/B for tyre and adapter selection.

Setup and tuning: wheel halves and clamping hardware are included; correct assembly is important for bead security and dynamic balance. The kit includes metal weighting feeders to allow precise mass adjustments at the rim, useful when dialling in traction and roll characteristics on rough, technical trails.

For model builders seeking a durable, realistic rim option, these aluminium beadlocks are a straightforward upgrade; double-check tyre ID and expect to do the final assembly and trimming yourself.