Bridgestone Battlecross E50 90/90-21M/C (54P) TireThe BATTLECROSS E50 is the most versatile off road tire in the BATTLECROSS line up. The E50 is built specifically with the hardcore Enduro rider in mind, where the rider must traverse multiple surfaces in one ride. Specifically designed for the hard core Enduro rider. The E50 tire is optimized for a broad spectrum of off road riding. Improved off road traction due to a new front and rear tread pattern, "Castle Block" Technology, increased block