Race tire with special tread compound for low rolling resistance. Race tire with special tread compound for low rolling resistance. IC - Iron Cloak, Kenda`s best puncture resistant material, a blend of Aramid fibers, is laid up on the tire casing from bead to bead L3R - L3R Pro is Kenda?s most versatile compound, benefits are a light-weight, fast rolling compound and increased tread life.