Level 6 padding: Ideal for casual riding
VaporRize™ Hydrogen yarns are extremely lightweight and soft against the skin
Ramped and siped center tread blocks provide strong traction and accurate steering
While Wahoo has conducted tests on KICKR safety and compatibility with certain bikes
ergonomically designed Body Geometry touchpoints are there to take the sting out of longer rides
Sirrus X 4.0 Electric Level 6 padding: Ideal forOffering 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