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.
 
FEATURES
- Lightweight A1 Alloy frame with clean internal cable routing, 3.5lbs (1.7kg) lighter than our Crosstrail Hydro model.
 
- Float over rough terrain with fast rolling Specialized Pathfinder 42c tires featuring proprietary Gripton rubber compound..
 
TECHNICAL SPECIFICATIONS
Frameset
- 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: Promax F1, hydraulic disc, flat-mount, 160mm
 
- Rear Brake: Promax F1, hydraulic disc, flat-mount, 160mm
 
 
Drivetrain
- Bottom Bracket: BSA, square-taper, 68mm
 
- Rear Derailleur: MicroSHIFT Acolyte 8 Speed, with Clutch
 
- Chainrings: 40T
 
- Shift Levers: microSHIFT Acolyte, SL-M6280-R, 8-speed
 
- Crankset: Alloy Forged Arms
 
- Cassette: microSHIFT Acolyte CS-H084, 12-42t, 8-speed
 
- Chain: KMC X8 w/ Missing Linkâ„¢
 
 
Wheels & Tires
- Rims: 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
 
- Rear Hub: Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
 
- Front Hub: Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
 
- Front Tire: Pathfinder Sport, 700x42
 
- Rear Tire: Pathfinder Sport, 700x42
 
- Spokes: Stainless, 14g
 
- Inner Tubes: Standard 40mm SV 700x32-50
 
 
Cockpit
- Saddle: Bridge Sport, Steel rails, 155/143mm
 
- Handlebars: Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
 
- SeatPost: Alloy, 12mm offset, 2-bolt clamp, 27.2mm
 
- Seat Binder: Bolt-type, 31.8mm
 
- Stem: 3D-forged alloy, 31.8mm, 7-degree rise
 
- Grip: Specialized Neutralizer, Body Geometry, locking grip
 
 
Accessories
- Pedals: Specialized Body Geometry Fitness, Platform, Plastic
 
 
Product details
- Product ID: 277663
 
- Weight Size: MD
 
- Weight: 12.08 kg (26 lb, 10.1 oz)
 
 
* Weights based on production painted frames as pictured. Actual weights will vary based on colourway, frame size, and component variation. Specifications are subject to change without notice.