Specialized has given its Sirrus commuter bike a radical redesign, the new bike ditches the classic twin triangle frame shape in favor of an interrupted seat tube design which Specialized is calling 'Compliance Junction'. Specialized isn't just a commuter bike though as the Future Shock suspension, space for bigger tires, and a 1X drivetrain means the Sirrus can turn its hand to being a flat-bar gravel bike too.
Built using carbon, the new Sirrus' striking frame design is said to add more compliance to the frame without sacrificing performance. However, rather than use an active suspension system like the recently released Diverge STR, it instead uses a passive system that leverages the flex that can be created through the layup of carbon.
