Sirrus X 4.0 Shoe covers protective

protective

The Control Stem is tailor made with a 35mm clamp to partner with the Control SL bar

and they're shaped and structured to ensure that their contents won't ever come bouncing out

Not only does light weight make for faster climbing

you can take all that tire volume to the road with no penalty for a next level silky ride

Sirrus X 4.0 Shoe covers protectiveOffering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between. SMOOTH; COMFORTABLE, AND EFFICIENT: Sirrus X provides the smoothest ride in its class. With bigger, confidence inspiring tires, a slightly more upright riding position, and a super intuitive one by drivetrain. RIDER FIRST ENGINEERED: Like all Specialized performance bikes, the geometry of each frame is