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These are the ST Racing CNC Machined Brass Front Caster Blocks for the Traxxas TRX-4M. Brass components helps with the performance of your TRX-4M by adding weight strategically at the lower portion of the vehicle, while increasing the durability of your TRX-4M as well. These brass Caster Blocks features the stock geometry with bearing holes drilled after black coating for the most accurate and precise tolerance for the stock bronze bushing or if you upgrade to ball bearings.
