Iron Cloak (ICL) - Kenda's best puncture resistant material, Iron Cloak is a layer of material under the tread that runs bead to bead. In addition to helping prevent punctures, it also adds strength to the sidewalls of the tire by adding minimal weight to the tire.
L3R Pro (L3RP) - An upscale version of L3R blended together with Kenda's high performance Motorcycle Rubber Compounds. Benefits are extended tread life and a lighter tire. Typically found on Kenda's high performance XC mountain bike tires and road tires.