


2026 Specialized Sirrus X 4.0 Features
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.
At a Glance
- 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.
Product Information
Product Information
Bottom Bracket |
Threaded BSA 68mm, 24mm spindle |
Brakes |
Shimano BR-MT200, hydraulic disc, 160mm |
Cassette |
Shimano, CS-LG400-11, CUES, 11-Speed, 11-50T |
Chain |
KMC eGlide for 11-Speed Cues |
Chain Rings |
Narrow Wide Steel 42T |
Chainrings |
Narrow Wide Steel 42T |
Crankset |
Prowheel Alloy, XXS - XS: 165mm, S - M: 170mm, L - XL: 175mm |
Fork |
Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5 |
Frame |
Specialized A1SL Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts |
Front Brake |
Shimano BR-MT200, hydraulic disc, 160mm |
Front Hub |
Alloy, sealed cartridge bearings, Center Lock, 12x100mm thru-axle, 24h |
Front Tire |
Pathfinder Wirebead Fast Gravel 700X40C |
Grip |
Specialized Neutralizer, Body Geometry, locking grip |
Handlebar |
Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm |
Handlebars |
Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm |
Rims |
700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h |
Saddle |
Body Geometry Power Sport, steel rails |
Seat Binder |
Bolt-type, 31.8mm |
Seatpost |
Alloy, 2-bolt, 14mm offset, 27.2mm |
Stem |
Future Stem, Comp |
Tires |
Pathfinder Wirebead Fast Gravel 700X40C |
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