That extra tube will make the rest of your ride that much more enjoyable knowing that you won’t have to use your cell phone if another flat occurs
Diameter packed: 9 cm
While the boot has a thin layer of our TrailFoam™ to provide extra comfort and protection on rough trails
it progresses fluidly and quickly through a wide range of gears
160mmHub interface:6-bolt
Specialized Sirrus X 3.0 Step-Through WinterSale-Apparel That extra tube will makeOffering 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