The Tioga PowerBlock tire is the ultimate racing tire, super fast with a ton of grip. It is available in both wire bead (20″ x 1-1/8″, 1-3/8″, 1.6″, 1.75″, 1.95″) or folding (20″ x 1.6″, 1.75″) versions as well as a 24″ x 1.75″ size. Check it and more tires out here in our catalog.