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You have places to go, people to see, and fitness goals to achieve. We get it—life moves pretty fast, so it's a good thing we made Sirrus to help you with all of it. Wherever you're heading, Sirrus will take you there. Sirrus features a super light Aluminum Alloy construction, as well as a reliable Shimano components that are built to withstand years of daily abuse on the world’s pavement. Powerful hydraulic disc brakes provide reliable stopping power in any condition, and comfortable, ergonomically designed Body Geometry touchpoints are there to take the sting out of longer rides. So, as you push yourself to reach your goals, you'll feel more connected to your bike and know that you have the perfect partner with Sirrus.
Lightweight A1 Alloy frame with 42c tires clearance, clean internal cable routing and mounting points for a range of accessories give maximum flexibility.
Wide-range 2x10 Shimano Tiagra Road components for intuitive and precise shifting.
Lightweight 2-piece crank for years of performance.
Racktime rack for your favorite bags and panniers, and integrated DRYTECH fenders to keep the spray away.
Extra-bright front and rear lighting powered by a Shimano Dynamo hub to see and be seen.
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
Suspension
Fork
A1 Premium Aluminum, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release
Brakes
Front Brake
Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm
Rear Brake
Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm
Drivetrain
Shift Levers
Shimano Tiagra, 10-speed w/ Optical Gear Display
Front Derailleur
Shimano Tiagra FD-4700, Band-clamp
Rear Derailleur
Shimano Tiagra, 10-speed
Cassette
Shimano Tiagra, 10-speed, 11-34t
Chain
KMC, X10, EPT anti-corrosion coating, 10-speed w/ Missing Link™
Crankset
Forged aluminum arms, 2-piece, 24mm spindle, 48/32T, chainguard
Chainrings
48/32T, included w/ crank set
Bottom Bracket
BSA for 24mm spindle
Wheels & Tires
Rims
700C disc brake, double-wall alloy, 22mm depth, 21mm internal width
Front Hub
Shimano Dynamo, 6-bolt disc, 100mm spacing, quick-release, 32h
Rear Hub
Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
Spokes
Stainless, 14g
Front Tire
Nimbus II Sport Reflect, 700x38mm
Rear Tire
Nimbus II Sport Reflect, 700x38mm
Inner Tubes
700x28/38mm, 48mm Presta valve
Cockpit
Stem
3D-forged alloy, 31.8mm, 7-degree rise
Handlebars
Double-butted alloy, 9-degree backsweep, 31.8mm
Grips
Specialized Body Geometry Contour, lock-on
Tape
Specialized Body Geometry Contour, lock-on
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
Headlight
Herrmans H-Black MR8, Dynamo
Taillight
Herrmans H-Trace Mini, Dynamo
Rack
Sirrus EQ Rack, Direct Fender Mount, Racktime compatible, 15kg
Fenders
Specialized DRYTECH, Aluminum
Kickstand
Center-mount, alloy
Bell
Specialized Alloy Dome Bell
Weight
Weight
13.0kg (28 lb, 10.6 oz)
Weight Size
LG
* Weights based on production painted frames as pictured. Actual weights will vary based on colourway, frame size, and component variation. Specifications are subject to change without notice.
Geometry
| XS | S | M | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Crank Length | 165mm | 165mm | 165mm | 165mm | 170mm | 170mm | 170mm | 170mm | 175mm | 175mm | 175mm | 175mm |
| Handlebar Width | 580mm | 580mm | 580mm | 580mm | 600mm | 600mm | 600mm | 600mm | 620mm | 620mm | 620mm | 620mm |
| Stem Length | 70mm | 70mm | 70mm | 70mm | 80mm | 80mm | 90mm | 90mm | 100mm | 100mm | 110mm | 110mm |
| Saddle Width | 155mm | 155mm | 155mm | 155mm | 155mm | 155mm | 143mm | 143mm | 143mm | 143mm | 143mm | 143mm |
| Seatpost Length | 300mm | 300mm | 300mm | 300mm | 350mm | 350mm | 350mm | 350mm | 400mm | 400mm | 400mm | 400mm |
| Head-Tube Angle | 70° | 70° | 71° | |||||||||
| Trail | 70mm | 70mm | 64mm | |||||||||
| Seat-Tube Angle | 73.5° | 73.5° | 73.5° | |||||||||
| Stack | 555mm | 563mm | 593mm | |||||||||
| Top-Tube Length (horizontal) | 557mm | 567mm | 584mm | |||||||||
| B-B Height | 272mm | 272mm | 272mm | |||||||||
| Front-Center | 628mm | 637mm | 646mm | |||||||||
| Fork Length (full) | 395mm | 395mm | 395mm | |||||||||
| Bike Stand-Over Height | 620mm | 620mm | 625mm | |||||||||
| Reach | 393mm | 400mm | 408mm | |||||||||
| B-B Drop | 70mm | 70mm | 70mm | |||||||||
| Chain-Stay Length | 440mm | 440mm | 440mm | |||||||||
| Fork Rake/Offset | 51mm | 51mm | 51mm | |||||||||
| Head-Tube Length | 139mm | 147mm | 175mm | |||||||||
| Seat-Tube Length | 395mm | 450mm | 500mm | |||||||||
| Wheelbase | 1058mm | 1068mm | 1077mm |
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