This is an RC-scale aluminum wheel set designed for 1.9" crawler applications, produced as an aftermarket option by GPM. The wheels use machined aluminum for strength and dimensional stability, and each wheel has a measured mass noted in the source material that can act as added external weight to alter vehicle balance and traction behavior during crawling.
Components included in the construction are noted as wheel disc 2pcs, outer rim 2pcs, inner rim 2pcs, center cap 2pcs, flat head screw M2.5x7 16pcs, providing the full assembly for each wheel unit and allowing standard assembly using the supplied hardware.
Installation and tuning notes: these wheels are designed to interface with 12mm hex hubs common on many crawler platforms; verify hex size and wheel bore before fitment, check thread engagement on supplied M2.5 screws, and use proper torque to avoid stripping threads in aluminum parts. The added mass per wheel can be used deliberately to lower the centre of gravity and improve low-speed traction on technical sections, but expect changes in suspension response and steering effort accordingly.
Use these wheels where you need durable aluminum construction and extra rotating mass for scale-style crawling setups, and confirm hex and diameter match your crawler before purchase.
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