Offering 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 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.
NIMBLE: Class-leading light-weight, exceptional pedaling efficiency, and steering precision merge for confident, nearly telepathic handling characteristics.
Technical Specifications
- Frame: Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts
Suspension
- Fork: Hi-Ten steel, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release
Brakes
- Front Brake: Lee Chi, Mechanical Disc
- Rear Brake: Lee Chi, Mechanical Disc
Drivetrain
- Chain: KMC X8 w/ Missing Link™
- Chainrings: Narrow Wide Steel 42T
- Crankset: Prowheel Alloy, XXS - XS: 165mm, S - M: 170mm, L - XL: 175mm
- Rear Derailleur: Shimano Acera, 8-speed
- Shift Levers: Shimano Altus SL-M315-7R, 7-Speed
- Bottom Bracket: Square-tapered, 68mm
- Cassette: microSHIFT CS-H074, 12-40t, 7-Speed
Wheels & tires
- Rims: 700C disc brake, double-wall alloy, 22mm depth, 21mm internal width
- Rear Hub: Alloy, 6-bolt disc, 8/9-Speed freehub, loose ball bearing, quick-release, 36h, 10x135mm
- Front Hub: Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
- Front Tire: Pathfinder Wirebead Fast Gravel 700X40C
- Rear Tire: Pathfinder Wirebead Fast Gravel 700X40C
- Spokes: Stainless, 14g
- Inner Tubes: Standard 40mm SV 700x32-50
Cockpit
- Stem: 3D-forged alloy, 31.8mm, 7-degree rise
- SeatPost: Alloy, 12mm offset, 2-bolt clamp, 27.2mm
- Seat Binder: Bolt-type, 31.8mm
- Saddle: Bridge Sport, Steel rails, 155/143mm
- Grip: Specialized Neutralizer, Body Geometry, locking grip
- Handlebars: Specialized, alloy, 15-degree backsweep, 46mm rise, 31.8mm
