The 3Racing 4mm Thick Wheel Adapter Ver.2, model 3RAC-WX124/V2/PK, is intended to create a firmer bond between wheel and hub so your model copes better with rough surfaces. It helps maintain wheel alignment and reduces the chance of movement at the mounting point.
The 4mm profile improves strength compared with thinner adapters, making it suitable for heavier use or rough terrain. Compatibility spans many common wheel and hub styles, but always measure hub bore and check for any potential interference before final fitment.
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