Specialized Sirrus X 1.0 Step-Through (2026)
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Pickup available at CyclErie Bikes & Service - Erie, CO
Usually ready in 2-4 days
Specialized Sirrus X 1.0 Step-Through (2026)
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.
Highlights
- Lightweight A1 Alloy frame with clean internal cable routing, 3.5lbs (1.7kg).
- Maximum control through intuitive shifting with 1x7 wide range gearing.
- Float over rough terrain with fast rolling Specialized Pathfinder 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: Lee Chi, Mechanical Disc
- Rear Brake: Lee Chi, Mechanical Disc
Drivetrain
- Chain: KMC X8 w/ Missing Link™
- Chainrings: Narrow Wide Steel 42T
- Crankset: Prowheel Alloy, XXS - XS: 165mm, S - M: 170mm, L - XL: 175mm
- Rear Derailleur: Shimano Acera, 8-speed
- Shift Levers: Shimano Altus SL-M315-7R, 7-Speed
- Bottom Bracket: Square-tapered, 68mm
- Cassette: microSHIFT CS-H074, 12-40t, 7-Speed
Wheels & Tires
- Rims: 700C disc brake, double-wall alloy, 22mm depth, 21mm internal width
- Rear Hub: Alloy, 6-bolt disc, 8/9-Speed freehub, loose ball bearing, quick-release, 36h, 10x135mm
- Front Hub: Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
- Front Tire: Pathfinder Wirebead Fast Gravel 700X40C
- Rear Tire: Pathfinder Wirebead Fast Gravel 700X40C
- Spokes: Stainless, 14g
- Inner Tubes: Standard 40mm SV 700x32-50
Cockpit
- Stem: 3D-forged alloy, 31.8mm, 7-degree rise
- SeatPost: Alloy, 12mm offset, 2-bolt clamp, 27.2mm
- Seat Binder: Bolt-type, 31.8mm
- Saddle: Bridge Sport, Steel rails, 155/143mm
- Grip: Specialized Neutralizer, Body Geometry, locking grip
- Handlebars: Specialized, alloy, 15-degree backsweep, 46mm rise, 31.8mm
Accessories
- Pedals: Specialized, platform
Geometry (mm)
| XS | S | M | |
|---|---|---|---|
| Stack | 555 | 563 | 593 |
| Reach | 393 | 400 | 408 |
| Head-Tube Length | 139 | 147 | 175 |
| Head-Tube Angle | 70 | 70 | 71 |
| B-B Height | 288 | 288 | 288 |
| B-B Drop | 70 | 70 | 70 |
| Trail | 76 | 76 | 69 |
| Fork Length (full) | 395 | 395 | 395 |
| Fork Rake/Offset | 51 | 51 | 51 |
| Front-Center | 628 | 637 | 646 |
| Chain-Stay Length | 440 | 440 | 440 |
| Wheelbase | 1058 | 1068 | 1077 |
| Top-Tube Length (horizontal) | 557 | 567 | 584 |
| Bike Stand-Over Height | 636 | 636 | 641 |
| Seat-Tube Length | 395 | 450 | 500 |
| Seat-Tube Angle | 73.5 | 73.5 | 73.5 |
Weight: 11.72 kg (25 lb, 13.4 oz), manufacturer spec
We had an outstanding experience at Cyclerie! We purchased two Aventon e-bikes, and the entire process was exceptional from start to finish. The staff took the time to help us choose the perfect bikes for our needs, recommended all the right accessories, and even installed our bike rack on the car before we left.
I had a terrific experience at Cyclerie! I love the bike I bought and working with Skip was great. He told me about customizing features that are available on the bike if you use the Aventon app.
I enjoyed my buying experience at Cyclerie. Ideal location, easy to get to, easy access to trails to test ride. … Salesperson was helpful, knowledgeable and easy to work with. No pressure to buy.
