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.
- 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.
BIKE SPECS
Frame:Â Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts
Fork:Â Hi-Ten steel, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release
Stem:Â 3D-forged alloy, 31.8mm, 7-degree rise
Tape:Â Specialized Neutralizer, Body Geometry, locking grip
Saddle:Â Bridge Sport, Steel rails, 155/143mm
Handlebars:Â Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Seat Binder:Â Bolt-type, 31.8mm
Front Brake: Promax F1, hydraulic disc, flat-mount, 160mm
Rear Brake:Â Promax F1, hydraulic disc, flat-mount, 160mm
Shift Levers:Â MicroSHIFT, 8-speed
Rear Derailleur:Â MicroSHIFT Advent 8-Speed, w/o Clutch
Cassette:Â MicroSHIFT, 8-Speed, 12-42t
Crankset:Â 3 pc, Alloy Forged Arms
Bottom Bracket:Â BSA, square-taper, 68mm
Chain:Â KMC X8 w/ Missing Linkâ„¢
Rims:Â 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Front Hub:Â Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
Rear Hub:Â Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
Front Tire:Â Pathfinder Sport, 700x42mm
Rear Tire:Â Pathfinder Sport, 700x42mm
Inner Tubes:Â Schrader valve, 40mm
Seat Post: Alloy, 12mm offset, 2-bolt clamp, 27.2mm
Pedals:Â Specialized Body Geometry Fitness, platform, plastic
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GEOMETRY
 |
XS |
S |
M |
B-B Drop |
70 |
70 |
70 |
B-B Height |
288 |
288 |
288 |
Bike Stand-Over Height |
636 |
636 |
641 |
Chain-Stay Length |
440 |
440 |
440 |
Crank Length |
165mm |
170mm |
170mm |
Fork Length (full) |
395 |
395 |
395 |
Fork Rake/Offset |
51 |
51 |
51 |
Front-Center |
628 |
637 |
646 |
Handlebar Width |
680mm |
680mm |
680mm |
Head-Tube Angle |
70 |
70 |
71 |
Head-Tube Length |
139 |
147 |
175 |
Reach |
393 |
400 |
408 |
Saddle Width |
155mm |
155mm |
143mm |
Seat-Tube Angle |
73.5 |
73.5 |
73.5 |
Seat-Tube Length |
395 |
450 |
500 |
Seatpost Length |
300mm |
350mm |
350mm |
Stack |
555 |
563 |
593 |
Stem Length |
60mm |
70mm |
80mm |
Top-Tube Length (horizontal) |
557 |
567 |
584 |
Trail |
76 |
76 |
69 |
Wheelbase |
1058 |
1068 |
1077 |
![Size Chart](https://www.specialized.com/medias/sizeChartSirrus.jpg?context=bWFzdGVyfGltYWdlc3w5MTg1OXxpbWFnZS9qcGVnfGhiMy9oNjgvOTI5OTkzNTk4NTY5NC9zaXplQ2hhcnRTaXJydXMuanBnfGFhNzcxYTY5MzAzNTNmNDc3NjY3ZmJkZWVlNzhhYzQzZGIxM2IzOTA3ODQwMDYzNGEzZWE0ZGFkOTllYzA5ZDE)