The GPM GT010/12X9MM adapters are crafted from 6061 T6 aluminium to provide a precise and robust interface on the Traxxas 4WD GT4 TEC 2.0 axle. These 9mm thick adapters replace the stock 6.8mm brake disk thickness to reduce axial play and improve wheel stability under load, offering a durable upgrade for serious model tuning and track use.