Ground Control Sport socks & footwear accessories AND EFFICIENT: The patent pending

AND EFFICIENT: The patent pending Compliance Junction frame design of the Sirrus X provides the smoothest ride in its class

we re-directed the angle of the chainstay and upper shock linkages for a much more efficient design

or ride to the gym

go up to 62 miles (100 km) or 4

Ground Control Sport socks & footwear accessories AND EFFICIENT: The patent pendingThe Ground Control Sport is an exceptionally versatile trail tire that uses a tread optimized using Finite Element Analysis. This means that it rolls fast and provides increased grip and traction in nearly all conditions. Casing: 60 TPI Bead: Wire Compound: 60a 26 x 2. 1"; psi 25 50 26 x 2. 3"; psi 25 50 27. 5 x 2. 3"; psi 25 50 29 x 2. 1"; psi 25 50 29 x 2. 3"; psi 25 50