The Tioga Powerblock S-Spec tire is a lightweight race tire with low profile directional side lugs for excellent cornering on hard pack surfaces, smooth center tread for less rolling resistance and a Cyclex casing with Kevlar bead to help save weight.

Folding Bead.

20 x 2.1 : 11.64oz; 330g
20 x 1.95 : 10.76oz; 305g
20 x 1.75 : 10.05oz; 285g
20 x 1.60 : 8.47oz; 240g
20 x 1-3/8 : 8.99oz; 255g
20 x 1-1/8 : 6.31oz; 179g