An unprecedented combination of comfort, efficiency, and agile handling – the Sirrus X impresses on asphalt, gravel, and everything in between. SMOOTH, COMFORTABLE, AND EFFICIENT: The Sirrus X delivers the smoothest ride in its class. With larger, confidence-inspiring tires, a more upright seating position, and an incredibly intuitive single-speed drivetrain. RIDER-FIRST ENGINEERED: As with all performance bikes from Specialized, the geometry of each frame is custom-tuned. This means that for every frame size, tube diameters are specifically selected to achieve the optimal balance of stiffness, weight, and responsiveness – ensuring that you enjoy the best riding experience regardless of your size. AGILE: Class-leading lightweight construction, outstanding pedaling efficiency, and precise steering provide a secure, almost telepathic handling experience. - Lighter than the Sirrus X 2.0 and faster thanks to the additional A1 aluminum fork. - Broadly spaced Shimano Cues 1x11 drivetrain with an 11–50T cassette for excellent range on any surface. - More powerful hydraulic brakes for better stopping power and durability under challenging conditions. - Racktime luggage carrier for your favorite bags and panniers, along with integrated DRYTECH fenders to keep water splashes at bay. - Particularly bright front and rear lights powered by a Shimano hub dynamo – ensuring you'll see well and be seen.