SWB BILLY BONKERS 26x2.1 PERF K-GUARD BK/BSK SBC WIRETightly packed, evenly spaced rectangular knobs offer lots of working edges for traction on hardpack trails and jumps The tread pattern extends well onto the shoulder of the tire for predictable traction on berms and turns ADX Addix compound found on the Performance Line made to serve as an all around, well balanced compound for all uses KGRD Layer from natural rubber, reinforced with Kevlar fibers the protection standard for every tire from the