This is a set of optional ST Racing Concepts CNC Machined Aluminum Rear
Hub Carriers, and are intended for use with the HPI Blitz and
E-Firestorm Trucks. Precision CNC machined from high-grade aluminum,
these rear hub carriers features a set-screw over hinge-pin design that
secures the hub carriers on the hinge-pins. This design reduces wear by
forcing the hinge-pins to rotate in the arms and not in the aluminum
hub carriers. These parts increase durability and add a awesome factory
look to your HPI Blitz or E-Firestorm.