Specialized Sirrus X 2.0 ST
Details
Sirrus X is your ticket to riding more and to places you never imagined possible. It's a comfortable, capable, "let's do stuff" kind of bike that will inspire you to ride more than you ever have before. With bigger, confidence-inspiring tires, a slightly more upright riding position, a super-intuitive one-by drivetrain, and plenty of mounts for racks and fenders, it's more than just a solid partner on pavement. Sirrus X is a dialed option when it's time to hit some gravel. We've also equipped every Sirrus X with next-level comfort from our scientifically tested and ergonomically engineered Shared Platform Body Geometry saddle, handgrips, and pedals.
- Lightweight A1 Alloy frame with clean internal cable routing, 3.5lbs (1.7kg) lighter than other bikes in this class.
- Maximum control through hyper-intuitive shifting with 1x8 wide-range gearing, and powerful hydraulic disc brakes.
- Float over rough stuff with fast-rolling Specialized Pathfinder 42mm tires featuring proprietary Gripton rubber compound.
| X-Small | Small | Medium | |
|---|---|---|---|
| Crank Length | 165mm | 170mm | 170mm |
| Handlebar Width | 680mm | 680mm | 680mm |
| Stem Length | 60mm | 70mm | 80mm |
| Seatpost Length | 300mm | 350mm | 350mm |
| Stack | 555mm | 563mm | 593mm |
| Reach | 393mm | 400mm | 408mm |
| Head-Tube Length | 139mm | 147mm | 175mm |
| Head-Tube Angle | 70° | 70° | 71° |
| 288mm | 288mm | 288mm | 288mm |
| 70mm | 70mm | 70mm | 70mm |
| Trail | 76mm | 76mm | 69mm |
| Fork Length (full) | 395mm | 395mm | 395mm |
| Fork Rake/Offset | 51mm | 51mm | 51mm |
| Front-Center | 628mm | 637mm | 646mm |
| Chain-Stay Length | 440mm | 440mm | 440mm |
| Wheelbase | 1058mm | 1068mm | 1077mm |
| Top-Tube Length (horizontal) | 557mm | 567mm | 584mm |
| Bike Stand-Over Height | 636mm | 636mm | 641mm |
| Seat-Tube Length | 395mm | 450mm | 500mm |
| Seat-Tube Angle | 73.5° | 73.5° | 73.5° |
Specs
| Frame | Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts |
|---|---|
| Fork | Hi-Ten steel, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release |
| Rims | 700c disc, double-wall alloy, 22mm depth, 21mm internal width, 32h |
| Hubs |
Front: Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h Rear: Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h |
| Spokes | Stainless, 14g |
| Tires | Pathfinder Sport, 700c x 42 |
| Bottom Bracket | BSA, square-taper, 68mm |
| Crankset | 3 pc, Alloy Forged Arms |
| Chainrings | 40T |
| Shifters | MicroSHIFT, 8-speed |
| Rear Derailleur | MicroSHIFT Advent 9 Speed, W/O Clutch |
| Cassette/Freewheel | MicroSHIFT, 8-Speed, 12-42t |
| Chain | KMC X8 w/Missing Link |
| Brakes | Promax F1, hydraulic disc, flat-mount, 160mm |
| Handlebars | Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm |
| Tape/Grips | Specialized Neutralizer, Body Geometry, locking grip |
| Stem | 3D-forged alloy, 31.8mm, 7-degree rise |
| Seatpost | Alloy, 12mm offset, 2-bolt clamp, 27.2mm |
| Saddle | Bridge Sport, Steel rails, 155/143mm |
| Pedals | Specialized Body Geometry Fitness, platform, plastic |
* Subject to change without notice.
Reviews