This is an optional ST Racing Concepts CNC Machined Aluminum Engine Mount. The CNC machined aluminum engine mount is a much stronger foundation for the Traxxas Engine compared to the stock cast aluminum mount. High-heat from the engine can possibly crack the cast aluminum mount around the screw threads. This CNC machined aluminum engine mount is more durable and can take more abuse.
This product was added to our catalog on February 22, 2018