Offering an unprecedented combination of comfort, efficiency, and nimble handling, Specialized's 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.
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 1x8 wide range gearing, and powerful hydraulic disc brakes.Float over rough terrain with fast rolling Specialized Pathfinder 42c tires featuring proprietary Gripton rubber compound.
| Crank Length | 165 | 165 | 170 | 170 | 175 | 175 |
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| Handlebar Width | 680 | 680 | 680 | 680 | 680 | 680 |
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| Stem Length | 60 | 60 | 70 | 80 | 90 | 100 |
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| Saddle Width | 155 | 155 | 155 | 143 | 143 | 143 |
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| Seatpost Length | 300 | 300 | 350 | 350 | 400 | 400 |
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| Stack | 536 | 555 | 563 | 593 | 608 | 633 |
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| Reach | 373 | 388 | 393 | 398 | 402 | 414 |
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| Head-Tube Length | 121 | 139 | 147 | 175 | 191 | 217 |
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| Head-Tube Angle | 69.5 | 70 | 70 | 71 | 71 | 71 |
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| B-B Height | 288 | 288 | 288 | 288 | 288 | 288 |
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| B-B Drop | 70 | 70 | 70 | 70 | 70 | 70 |
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| Trail | 79 | 76 | 76 | 69 | 69 | 69 |
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| Fork Length (full) | 395 | 395 | 395 | 395 | 395 | 395 |
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| Fork Rake/Offset | 51 | 51 | 51 | 51 | 51 | 51 |
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| Front-Center | 606 | 623 | 631 | 636 | 645 | 665 |
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| Chain-Stay Length | 440 | 440 | 440 | 440 | 440 | 440 |
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| Wheelbase | 1036 | 1053 | 1061 | 1067 | 1076 | 1096 |
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| Top-Tube Length (horizontal) | 532 | 552 | 560 | 574 | 582 | 602 |
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| Bike Stand-Over Height | 702 | 725 | 755 | 785 | 815 | 837 |
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| Seat-Tube Length | 360 | 395 | 440 | 470 | 510 | 530 |
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| Seat-Tube Angle | 73.5 | 73.5 | 73.5 | 73.5 | 73.5 | 73.5 |
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- Stem: 3D-forged alloy, 31.8mm, 7-degree rise
- Handlebars: Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
- SeatPost: Alloy, 12mm offset, 2-bolt clamp, 27.2mm
- Seat Binder: Bolt-type, 31.8mm
- Saddle: Bridge Sport, Steel rails, 155/143mm
- Tape: Specialized Neutralizer, Body Geometry, locking grip
- Frameset: Frame2020 Sirrus X A1 Disc
- Fork: 2020 Sirrus X Steel Disc
- Front Brake: Promax F1, hydraulic disc, flat-mount, 160mm
- Rear Brake: Promax F1, hydraulic disc, flat-mount, 160mm
- Chainrings: 40T
- Bottom Bracket: BSA, square-taper, 68mm
- Cassette: micro SHIFT Acolyte CS-H084, 12-42t, 8-speed
- Crankset: Alloy Forged Arms
- Rear Derailleur: microSHIFT Acolyte, 8-speed
- Chain: KMC X8 w/ Missing Link
- Shift Levers: microSHIFT Acolyte, 8-speed
- Rims: 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
- Rear Hub: Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
- Front Hub: Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
- Front Tire: Pathfinder Sport, 700x42
- Rear Tire: Pathfinder Sport, 700x42SpokesStainless, 14g
- Inner Tubes: Standard 40mm SV 700x32-50
- Pedals: Specialized Body Geometry Fitness, Platform, PlasticProduct detailsProduct ID277661Weight12.08 kg (26 lb, 10.1 oz)Weight SizeLG
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