Ramped and siped center tread blocks provide strong traction and accurate steering
Replacement padset for Propero 4
Super Deluxe Ultimate sets the new benchmark
VaporRize™ Hydrogen yarns are extremely lightweight and soft against the skin
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