Sirrus X 3.0 Components the seat tube is typically

the seat tube is typically just a "tube" with pivots and BB shell welded on

POCKET: 100% Polyester

we implemented our Rider-First Engineered™ technology that was first introduced on our Tarmacs

Innovative MIMIC technology uses multilayered materials to maintain equilibrium and minimize swelling in soft tissue

GENIE reduces the frequency and severity of bottom-outs

Sirrus X 3.0 Components the seat tube is typicallyOffering 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