A tubeless-ready design for enhanced puncture protection and lower riding pressures
including traffic signals
4 with both active at once
and relaxed fit to create a shoe that won’t lose its cool
intelligently adapt to your environment
Sirrus X 3.0 Size:L A tubeless-ready design for enhancedOffering 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