Specialized Sirrus X 4.0

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.

Future Shock 1.5 delivers 20mm of compliance to give maximum comfort and control over the rough stuff.
Added Carbon Fork and an A1 SL alloy frame delivers a build 1.6lb (.8kg) lighter than the 3.0 model–no heavy hybrid featuring a mountain style suspension fork comes close.
Wide-range 1x11 Shimano CUES shifting delivers precise shifting.

Frame
Specialized A1SL Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts

Fork
Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5

Front Brake
Shimano BR-MT200, hydraulic disc, 160mm

Rear Brake
Shimano BR-MT200, hydraulic disc, 160mm

Shift Levers
Shimano Cues SL-U6000, 11-Speed

Rear Derailleur
Shimano Cues 11-speed w/ Shadow Plus

Cassette
Shimano, CS-LG400-11, CUES, 11-Speed, 11-50T

Crankset
Prowheel Alloy, XXS - XS: 165mm, S - M: 170mm, L - XL: 175mm

Chainrings
Narrow Wide Steel 42T

Bottom Bracket
Threaded BSA 68mm, 24mm spindle

Chain
KMC eGlide for 11-Speed Cues

Rims
700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h

Front Hub
Alloy, sealed cartridge bearings, Center Lock, 12x100mm thru-axle, 24h

Rear Hub
Alloy, Center lock Disc, High-Low Flange, Sealed Cartridge Bearing, 32H, 12mm Axle, 142mm Spacing

Spokes
Stainless, 14g

Front Tire
Pathfinder Wirebead Fast Gravel 700X40C

Rear Tire
Pathfinder Wirebead Fast Gravel 700X40C

Inner Tubes
Standard 40mm SV 700x32-50

Handlebars
Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm

Stem
Future Stem, Comp

Grips
Specialized Neutralizer, Body Geometry, locking grip

Saddle
Body Geometry Power Sport, steel rails

SeatPost
Alloy, 2-bolt, 14mm offset, 27.2mm

Seat Binder
Bolt-type, 31.8mm

Pedals
Specialized, platform