The GPM Alloy Drive Adaptor Set for the Associated Monster GT uses alloy components to provide a stiffer interface between drives and wheels, reducing movement that can lead to premature wear. These 5mm adaptors are intended as a durable replacement to stock parts and are supplied with pins and O-rings to ensure secure retention and sealing where applicable. Fitment is straightforward and the set supplies four adaptors so a full axle replacement can be completed in one service.