2025 Specialized Sirrus X 1.0 Step-Through 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
- Lightweight A1 Alloy frame with clean internal cable routing, 3.5lbs (1.7kg) lighter than our Crosstrail Hydro model.
- Maximum control through intuitive shifting with 1x7 wide range gearing, and powerful hydraulic disc brakes.
- Float over rough terrain with fast rolling Specialized Pathfinder 42c tires featuring proprietary Gripton rubber compound.
Component Specifications
| Frame | Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts |
| Seat Binder | Bolt-type, 31.8mm |
| Fork | Hi-Ten steel, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release |
| Shift Levers | Shimano Altus SL-M315-7R, 7-Speed |
| Rear Derailleur | Shimano Acera RD-M3020, 7-Speed |
| Cassette | microSHIFT CS-H074, 12-40t, 7-Speed |
| Chain | KMC X8 w/ Missing Link™ |
| Crankset | PROWHEEL, Alloy, 165mm |
| Chain Rings | 40T |
| Bottom Bracket | Square-tapered, 68mm |
| Rims | 700C disc brake, double-wall alloy, 22mm depth, 21mm internal width |
| Front Hub | Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h |
| Rear Hub | Alloy, 6-bolt disc, 8/9-Speed freehub, loose ball bearing, quick-release, 36h, 10x135mm |
| Spokes | Stainless, 14g |
| Front Tire | Pathfinder Sport, 700x42mm |
| Rear Tire | Pathfinder Sport, 700x42mm |
| Inner Tubes | Standard 40mm SV 700x32-50 |
| Front Brake | Tektro MD-U310R, Mechanical Disc |
| Rear Brake | Tektro MD-U310R, Mechanical Disc |
| Stem | Alloy, 25.4mm, 10deg. |
| Handlebars | Double-butted alloy, 5-degree backsweep, 25.4mm |
| Saddle | Bridge Sport, Steel rails, 155/143mm |
| Seatpost | Alloy, 12mm offset, 2-bolt clamp, 27.2mm |
Size Guide: 2025 Specialized Sirrus X 1.0 Step-Through
