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a front chest zipper pocket
efficient climbing manners
in terms of confidence
So when you're serious about your CX racing
requiring 40% more force to pinch flat over our toughest competitors—allowing riders to run their preferred air-pressure with 100% confidence
Sirrus X 1.0 ST SHOE a front chest zipper pocketOffering 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
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