The JR-M703-LB is an aluminum front C-hub designed for compatibility with the TAMIYA M-07 chassis. It replaces the factory plastic component with a metal mount that secures the front wheel hub and steering linkage more rigidly, helping to reduce flex and maintain alignment.
Fitment is a direct replacement on M-07 setups using the same mounting footprint. Remove the original C-hub, move across the wheel hub, pins and fasteners, then confirm bearing seating and bolt torque during reassembly for reliable steering behaviour.