Offering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between. 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. Like all Specialized performance bikes, the geometry of each frame is uniquely crafted. This means that for every frame, each tube size is specifically selected to achieve the optimal balance of rigidity, weight, and responsiveness to ensure that no matter what size you’re riding, you will experience the world’s best ride. Class-leading light-weight, exceptional pedaling efficiency, and steering precision merge for confident, nearly telepathic handling characteristics.
Frame: Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts
Fork: Hi-Ten steel, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release
SeatPost: Alloy, 12mm offset, 2-bolt clamp, 27.2mm
Stem: 3D-forged alloy, 31.8mm, 7-degree rise
Tape: Specialized Neutralizer, Body Geometry, locking grip
Handlebars: Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Saddle: Bridge Sport, Steel rails, 155/143mm
Seat Binder: Bolt-type, 31.8mm
Rear Brake: Promax F1, hydraulic disc, flat-mount, 160mm
Front Brake: Promax F1, hydraulic disc, flat-mount, 160mm
Shift Levers: microSHIFT Acolyte, 8-speed
Rear Derailleur: microSHIFT Acolyte, 8-speed
Cassette: microSHIFT Acolyte CS-H084, 12-42t, 8-speed
Crankset: Alloy Forged Arms
Chainrings: Narrow-wide chainring w/ chainguard, 40t
Bottom Bracket: BSA, square-taper, 68mm
Chain: KMC X8 w/ Missing Link™
Rims: 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Front Hub: Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
Rear Hub: Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
Spokes: Stainless, 14g
Front Tire: Pathfinder Sport, 700x42mm
Rear Tire: Pathfinder Sport, 700x42mm
Inner Tubes: Standard 40mm SV 700x32-50
Pedals: Specialized Body Geometry Fitness, platform, plastic
Weight (LG): 12.08 kg (26 lb, 10.1 oz)
