Specialized Sirrus X 1.0 clipless - Shimano CUES U6000 10-speed:

- Shimano CUES U6000 10-speed: wide range gearing with the simplicity of a single front chainring

- Convenient universal phone clamp lets you turn any smartphone into a dashboard displaying ride information from the included Cannondale Wheel Sensor

2mm barbore

5" wheels on XS and Small for the best blend of fit and speed

It's the perfect bike for your little ripper to start getting out on the trail with—we just wish that we had one when we were kids

Specialized Sirrus X 1.0 clipless - Shimano CUES U6000 10-speed:Details Offering 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