ST Racing Concepts Traxxas TRX-4M Brass Front Caster Blocks. These optional caster blocks are intended for the Traxxas TRX-4M. Made from brass, each caster block is CNC machined for perfect fit and finish. Increase the durability, lower the center of gravity (CG) with a total of 9g unsprung weight in the front of your TRX-4M with the ST Racing Concepts Brass Caster Blocks. Package includes two front caster blocks.
