Universal tool-free mounting system makes it easy to install
The SE4 Team Issue Tubeless Ready tire offers incredible grip and fast-rolling efficiency in a lightweight enduro-spec casing
measuring out to a respectable 45x5
helping you go from zero-to-riding faster
Sirrus X 3.0 2018 Universal tool-free mounting system makesOffering 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