Traxxas 8661 motor mount hinge post for the 1/10 scale E-Revo VXL. Includes 5x25mm BCS (1)/ 4x16mm CS with split and flat washer (1). Use Traxxas stock and hop-up replacement parts to get the most out of your Traxxas RTR vehicles. This product is made from high quality materials and designed for long-lasting performance. This is replacement hardware for use on Traxxas vehicles; consult your user's manual for exact parts listings.