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The sawtooth faced shoulder knobs offer a continuous biting edge for railing through corners
Stumpjumper 15 Alloy balances efficiency and optimal bump force management
Individually cured for consistent tube thickness = the utmost in quality
Rim Material: Advanced Carbon Composite
From pushing out of the saddle to finding your rhythm
Sirrus X 3.0 Size:M The sawtooth faced shoulder knobsOffering 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
