SPECIALIZED Sirrus X 4.0
| Model Year | 2026 |
|---|---|
| Options | XS Gloss Quartz Metallic / Bordeaux Metallic Frost Re Usually despatched in 7-10 days S Gloss Quartz Metallic / Bordeaux Metallic Frost Re Usually despatched in 7-10 days M Gloss Quartz Metallic / Bordeaux Metallic Frost Re Usually despatched in 7-10 days L Gloss Quartz Metallic / Bordeaux Metallic Frost Re Usually despatched in 7-10 days XL Gloss Quartz Metallic / Bordeaux Metallic Frost Re Usually despatched in 7-10 days |
| Style | 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 pedalling efficiency, and steering precision merge for confident, nearly telepathic handling characteristics.
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| Frame | Specialized A1SL Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts |
| Forks | Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5 |
| Rear Derailleur | Shimano Cues 11-speed with Shadow Plus |
| Shifters | Shimano Cues SL-U6000, 11-Speed |
| Chainset | Prowheel Alloy, XXS - XS: 165mm, S - M: 170mm, L - XL: 175mm with Narrow Wide Steel 42T chainring |
| Bottom Bracket | Threaded BSA 68mm, 24mm spindle |
| Chain | KMC eGlide for 11-Speed Cues |
| Cassette | Shimano, CS-LG400-11, CUES, 11-Speed, 11-50T |
| Stem | Future Stem, Comp |
| Handlebars | Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm |
| Front Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| Rear Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| 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 |
| Tyres | Pathfinder Wirebead Fast Gravel 700X40C |
| Saddle | Body Geometry Power Sport, steel rails |
| Seatpost | Alloy, 2-bolt, 14mm offset, 27.2mm |
| Pedals | Specialized, platform |
| Grips | Specialized Neutralizer, Body Geometry, locking grip |
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.






