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Sirrus 4.0

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Sirrus 4.0

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We deliver! Just say when and how.

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 and carbon fiber construction, as well as reliable MicroSHIFT 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.

Technical Specifications

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Frameset

Frame

Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing, internal cable routing, flat-mount disc, 12x142mm thru-axle, Plug + Play rack/fender mounts

Suspension

Fork

Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5

Cockpit

Handlebars

Double-butted alloy, 9-degree backsweep, 31.8mm

Stem

Future Stem, Comp

Tape

Specialized Body Geometry Contour, lock-on

Saddle

Body Geometry Power Sport, steel rails

SeatPost

Alloy, 2-bolt, 14mm offset, 27.2mm

Seat Binder

Bolt-type, 31.8mm

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

MicroSHIFT, 10-speed

Front Derailleur

MicroSHIFT FD-R522, Band-clamp

Rear Derailleur

MicroSHIFT RD-R55S, short cage

Cassette

Sunrace CSRS0, 10-speed, 11-28t

Crankset

Praxis Alba M24, solid forged arms, 6061 outer ring, steel inner ring, 110 BCD, 10-speed

Chainrings

48/32T

Bottom Bracket

Praxis M24, BSA

Chain

KMC, X10, EPT anti-corrosion coating, 10-speed w/ Missing Link™

Wheels & Tires

Rims

700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h

Front Hub

Alloy, 6-bolt disc, sealed cartridge bearing, high-low flange, 12x100mm thru-axle, 28h

Rear Hub

Alloy, 6-bolt disc, sealed cartridge bearings, high-low flange, 12x142mm thru-axle, 28h

Spokes

Stainless, 14g

Front Tire

RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c

Rear Tire

RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c

Inner Tubes

700x28/38mm, 48mm Presta valve

Accessories

Pedals

Specialized Body Geometry Fitness, platform, plastic

* 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.

Geometry

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XXSXSSMLXL
Crank Length165mm165mm170mm172.5mm172.5mm175mm
Handlebar Width580mm580mm600mm600mm620mm620mm
Stem Length60mm70mm70mm80mm90mm100mm
Saddle Width155mm155mm155mm143mm143mm143mm
Seatpost Length300mm300mm350mm350mm400mm400mm
Stack587mm590mm606mm635mm651mm672mm
Reach355mm371mm376mm382mm386mm398mm
Head-Tube Length111mm125mm143mm169mm186mm208mm
Head-Tube Angle69.5°70°71°71°71°70°
B-B Height284mm284mm284mm284mm284mm284mm
B-B Drop70mm70mm70mm70mm70mm70mm
Trail78mm75mm75mm68mm68mm68mm
Fork Length (full)395mm395mm395mm395mm395mm395mm
Fork Rake/Offset51mm51mm51mm51mm51mm51mm
Front-Center602mm618mm629mm634mm644mm663mm
Chain-Stay Length440mm440mm440mm440mm440mm440mm
Wheelbase1033mm1049mm1060mm1065mm1074mm1093mm
Top-Tube Length (horizontal)529mm549mm559mm573mm581mm599mm
Bike Stand-Over Height722mm750mm778mm810mm831mm700mm
Seat-Tube Length360mm395mm440mm470mm510mm530mm
Seat-Tube Angle73.5°73.5°73.5°73.5°73.5°73.5°
Geometry

Rider Reviews

  • 5
  • 2 Reviews

Great pickup service and enjoying bike so far

Great pickup service at Planet Cycles in Brisbane and enjoying the bike so far. Just as described.

Would Recommend?
Yes!

Verified Buyer

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Name:
Jamie R.

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