Specialized
Specialized Sirrus 2.0 – Fitness & Commuter Hybrid Bike
Specialized Sirrus 2.0 – Fitness & Commuter Hybrid Bike
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A smooth, reliable fitness hybrid built for everyday riding — whether that’s city streets, bike paths, or weekend fitness loops.
Built with simplicity and everyday performance in mind, the Specialized Sirrus 2.0 combines a lightweight aluminum frame with intuitive shifting and confident hydraulic disc braking. From daily commutes to relaxed fitness rides, it delivers a balanced ride that’s both dependable and fun.
Designed with flat-bar fitness geometry, internal cable routing, and accessory mounts, this bike offers versatility and comfort for riders of all kinds.
Key Features
Key Features
- A1 Premium Aluminum Frame with fitness geometry, butted tubing, internal cable routing, and flat-mount disc mounts — a clean, efficient, and versatile platform.
- MicroSHIFT 2×8 Wide-Range Drivetrain — intuitive shifting for smooth, efficient gear changes.
- Hydraulic Disc Brakes — dependable stopping power in wet or dry conditions.
- 700c Wheelset with 42c Tire Clearance — fast on pavement with the option to run higher-volume tires for rougher surfaces.
- Accessory Mounts (Plug + Play) — ready for racks and fenders for commuting or touring.
Sizing
Sizing
Sizing
The Sirrus X 1.0 is available in XXS, XS, S, M, L, XL, XXL.
Sirrus X Size Guide
XXS: 4'8" – 4'11" (142–150 cm)
XS: 4'11" – 5'2" (150–158 cm)
S: 5'1" – 5'5" (155–165 cm)
M: 5'5" – 5'9" (165–175 cm)
L: 5'9" – 6'0" (175–183 cm)
XL: 6'0" – 6'4" (183–193 cm)
XXL: 6'4" – 6'6" (193–198 cm)
Between sizes?
Fit and feel are personal, but here’s a good rule of thumb:
- Choose the smaller size if you want a slightly quicker, more nimble feel, or prefer a shorter reach.
- Choose the larger size if you want a slightly more stable feel, or prefer a more relaxed, upright position.
Still unsure?
Send us your height + inseam, and we’ll recommend the best size.
Technical Specifications
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
SWAT
Suspension
Fork
Hi-Ten steel, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release
Brakes
Front Brake
Promax F1, hydraulic disc, flat-mount
Rear Brake
Promax F1, hydraulic disc, flat-mount, 160mm
Drivetrain
Shift Levers
microSHIFT Acolyte, 8-speed
Rear Derailleur
MicroSHIFT Acolyte 8 Speed, with Clutch
Cassette
microSHIFT Acolyte CS-H084, 12-42t, 8-speed
Chain
KMC X8 w/ Missing Link™
Crankset
Alloy Forged Arms
Chainrings
40T
Bottom Bracket
BSA, square-taper, 68mm
Wheels & Tires
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, 700x42
Rear Tire
Pathfinder Sport, 700x42
Inner Tubes
Standard 40mm SV 700x32-50
Cockpit
Stem
3D-forged alloy, 31.8mm, 7-degree rise
Handlebars
Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Grip
Specialized Neutralizer, Body Geometry, locking grip
Saddle
Bridge Sport, Steel rails, 155/143mm
SeatPost
Alloy, 12mm offset, 2-bolt clamp, 27.2mm
Seat Binder
Bolt-type, 31.8mm
Accessories
Pedals
Specialized Body Geometry Fitness, Platform, Plastic
Product Details
Product ID
277661
Weight
Weight
12.08 kg (26 lb, 10.1 oz)
Weight Size
LG
* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.
FAQ
FAQ
Q: What makes the Sirrus 2.0 a good commuter bike?
A: Its balanced fitness geometry, hydraulic disc brakes, and accessory mounts make it a reliable choice for daily riding and commuting.
Q: Can I ride the Sirrus 2.0 on rough roads or paths?
A: Yes — the frame clears up to 42c tires, giving you the option for bump-soaking comfort and stability.
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