All the sweet goodness of the PowerBlock S-Spec, but in steel bead with thicker, stronger sidewall. The standard PowerBlock strikes the sacred equilibrium between performance and value.

Features
- Center row - “Power Blocks” are precisely sized to balance traction with low rolling resistance.
- Sidewall texture- Specially designed texture pattern, strategically applied to the sidewall adds abrasion protection without sacrificing casing suppleness.- 60 TPI Casing

- UTC Rubber

- Steel Bead

-  24 x 2.10 (O.D. 624mm): 520g

-  24 x 1.75 (O.D. 610mm): 450g

-  24 x 1.60 (O.D. 600mm): 395g

-  20 x 2.10 (O.D. 522mm): 395g

-  20 x 1.95 (O.D. 515mm): 380g

-  20 x 1.75 (O.D. 506mm): 325g

-  20 x 1.60 (O.D. 495mm): 305g

-  20 x 1.40 (O.D. 428mm): 295g

-  20 x 1-3/8 (O.D. 531mm): 355g

-  20 x 1-1/8 (O.D. 518mm): 280g