Ramped and siped center tread blocks provide strong traction and accurate steering
packs in more comfort with the same exceptional heel hold that you found in the previous iteration
Replacement padset for Propero 4
Level 6 padding: Ideal for casual riding
Super Deluxe Ultimate sets the new benchmark
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