Sirrus X 3.0 2018 Made from heat-treated spring steel

Made from heat-treated spring steel and vinyl dipped for comfort

Downhill wire bead version has 2-ply construction with Stick-E rubber for better grip

Universal tool-free mounting system makes it easy to install

measuring out to a respectable 45x5

Kickstands are no recommended for excessive jumping

Sirrus X 3.0 2018 Made from heat-treated spring steelOffering 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