Get your Shimano drivetrain to the top of its game with the XTR Di2 Upgrade Kit
Most SRAM cranksets have traditionally used a 3-bolt mounting
Model Runt Boxxer Compatibility Boxxer 35mm
a compliant platform for technical climbs when not in fully extended rigid position
Wider gear range capacity and stable shifting performance
2027 Specialized Sirrus X 3.0 Km Bike Gloss Metallic White Silver / Metallic Deep Marine Frost Reflective L CheckoutTitle=Shimano Tiagra ST-4700 2-Speed Left Shift/Brake Lever Get your Shimano drivetrain toOffering 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
