Specialized Sirrus X 2.0 St Features
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.
At a Glance
- Lightweight A1 Alloy frame with clean internal cable routing , 3.5lbs (1.7kg) lighter than other bikes in this class.
- Maxiumum control through hyper intuitive shifting with 1x8 wide range gearing, and powerful hydraulic disc brakes.
- Float over rough stuff 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 | MicroSHIFT, 8-speed |
| Rear Derailleur | MicroSHIFT Advent 8-Speed, w/o Clutch |
| Cassette | MicroSHIFT, 8-Speed, 12-42t |
| Chain | KMC X8 w/ Missing Link™ |
| Crankset | 3 pc, Alloy Forged Arms |
| Chain Rings | 40T |
| Bottom Bracket | BSA, square-taper, 68mm |
| Rims | 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h |
| 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, 32h |
| Spokes | Stainless, 14g |
| Front Tire | Pathfinder Sport, 700x42mm |
| Rear Tire | Pathfinder Sport, 700x42mm |
| Inner Tubes | Schrader valve, 40mm |
| Front Brake | Promax F1, hydraulic disc, flat-mount, 160mm |
| Rear Brake | Promax F1, hydraulic disc, flat-mount, 160mm |
| Stem | 3D-forged alloy, 31.8mm, 7-degree rise |
| Handlebars | Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm |
| Saddle | Bridge Sport, Steel rails, 155/143mm |
| Seatpost | Alloy, 12mm offset, 2-bolt clamp, 27.2mm |
Specialized Sirrus X 2.0 St
| Bike/Frame Size | XS | S | M |
|---|---|---|---|
| Stack | 555 mm | 563 mm | 593 mm |
| Reach | 393 mm | 400 mm | 408 mm |
| Chain-Stay Length | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1058 mm | 1068 mm | 1077 mm |
| Top-Tube Length (horizontal) | 557 mm | 567 mm | 584 mm |
| Bike Stand-Over Height | 636 mm | 636 mm | 641 mm |
| Seat-Tube Length | 395 mm | 450 mm | 500 mm |
| Seat-Tube Angle | 73.5° | 73.5° | 73.5° |
| Head-Tube Length | 139 mm | 147 mm | 175 mm |
| Head-Tube Angle | 70° | 70° | 71° |
| B-B Height | 288 mm | 288 mm | 288 mm |
| B-B Drop | 70 mm | 70 mm | 70 mm |
| Trail | 76 mm | 76 mm | 69 mm |
| Fork Length (full) | 395 mm | 395 mm | 395 mm |
| Fork Rake/Offset | 51 mm | 51 mm | 51 mm |
| Front-Center | 628 mm | 637 mm | 646 mm |
Size Guide: Specialized Sirrus X 2.0 St
