Blocks are designed to provide extra support on the bottom of the center knobs to optimize rigidity to deliver next-level longevity performance Updated carcass structure to enhance overall rigidity to provide excellent stability going through challenging obstacles Ultra-gummy compound enhances high-speed cornering performance and durability Developed and tested in the most extreme enduro-style conditions Sidewall rigidity provides extra bump-absorption performance M-rated speeds up to 81 mph. JX8 GEKKOTA 110/100-18