Yiguo 2pcs Aluminum C Hub Carrier 11 Degree for GPM AXIAL SCX10 SCX019 Electric 4WD Gold Color: gold. Replaces the stock plastic c-hubs for increased strength and more responsive steering. Aluminum c-hubs are set at an increased castor angle to improve driveshaft angle while maintaining proper castor angle. Aluminum c-hub is designed with a lower profile to allow the maximum steering angle using stock steering knuckles.