GX20. GX20 has been developed to be a high-performance enduro and trail tire with feedback from the Japanese ISDE gold medalist Tadashi Kugimura and hard-enduro / enduro-cross legend Taddy Blazusiak. The carcass and tread pattern have been developed to excel in a wide range of natural terrains and provide solid and predictable steering. 2P+B structure provides both stability and shock absorption performance at high speeds. Optimization of block spacing ensures dirt removal performance. Splitting the center blocks into several sections improves stability when braking. Traction is improved by making the blocks larger on the edges. Tire Specifications: Type: TT. L.I.: 54R. Overall diameter (mm): N/A. Overall width (mm): N/A. Standard rim (inches): N/A. Measurement rim (inches): N/A.