World Championship Special Edition Speedster created to celebrate the world championship in U.S.A World Championship Special Edition Speedster created to celebrate the world championship in U.S.A Limited edition colorway features black tread with white side walls, a red stripe, and blue banners with white stars, merica! Honeycomb center tread provides virtually zero rolling resistance and unbelievable tread life LSG - Low Specific Gravity Compound is incredibly lightweight, designed for BMX and Racing, it allows for superior speed with a hardness of 66 A