Fast rolling directional tread with siping and larger horizontal corner lugs for improved cornering traction Redesigned Racing Ralph with updated tread designed specifically for use as a front tire on modern day XC trails ASPD _ Addix Speed compound features improved rolling resistance while also increasing durability and and overall grip SRACE - Super Race, three carcass layers on the sidewalls and two carcass layers in the middle under the tread, reinforced with a thin Raceguard puncture protector SSKN - SnakeSkin - A light and flexible carcass makes the tire highly resistant to scrubbing