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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
reducing pumping time by up to two minutes
Clamp Diameter: 31
The all-new Roubaix Expert now delivers compliance without compromise by introducing a radical new Future Shock 2
Sirrus X 4.0 Electric Ramped and siped center treadOffering 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
