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Sirrus 4.0

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2021 Sirrus 4.0

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 carbon fiber construction, as well as 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.

Technical Specifications

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FRAMESET

SWAT

Seat Binder

Integrated w/ frame

Frame

Specialized FACT 9r carbon, Fitness Geometry, 12x142mm thru-axle, internal cable routing, flat-mount disc, Plug + Play fender mounts

WHEELS & TIRES

Front Tire

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

Rims

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

Rear Hub

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

Inner Tubes

Presta, 48mm valve

Rear Tire

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

Spokes

Stainless, 14g

COCKPIT

SeatPost

Alloy, 12mm offset, 2-bolt clamp, 27.2mm

Saddle

Body Geometry Power Sport, steel rails

Handlebars

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

Tape

Specialized Body Geometry, lock-on, integrated bar ends, hidden 4/5mm hex key

Stem

Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

WHEELS

Front Hub

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

DRIVETRAIN

Chain

KMC X9, 9-speed w/ Missing Link™

Chainrings

50/34T

Rear Derailleur

Shimano Sora, 9-speed

Bottom Bracket

Shimano 68mm threaded

Cassette

Shimano Sora, 9-speed, 11-34t

Front Derailleur

microSHIFT R9, 9-speed, 31.8mm clamp

Shift Levers

microSHIFT, 9-speed

ACCESSORIES

Pedals

Specialized Body Geometry Fitness, platform, plastic

Suspension

Fork

Specialized FACT carbon, 12x100mm thru-axle, flat-mount disc, Plug + Play fender mounts

BRAKES

Rear Brake

Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm

Front Brake

Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm

* 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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XSSMLXLXXL
Crank Length170mm170mm170mm175mm175mm175mm
Stem Length70mm70mm80mm90mm100mm110mm
Handlebar Width580mm580mm600mm600mm620mm620mm
Seatpost Length300mm300mm350mm350mm400mm400mm
Saddle Width155mm155mm143mm143mm143mm143mm
Stack585mm602mm631mm649mm687mm709mm
Reach355mm371mm384mm386mm398mm410mm
Head-Tube Length125mm143mm169mm186mm223mm246mm
Head-Tube Angle70°70°71°71.5°72°72°
B-B Height275mm275mm275mm275mm275mm275mm
B-B Drop70mm70mm70mm70mm70mm70mm
Trail71mm71mm65mm62mm58mm58mm
Fork Length (full)390mm390mm390mm390mm390mm390mm
Fork Rake/Offset51mm51mm51mm51mm51mm51mm
Front-Center602mm625mm635mm637mm656mm675mm
Chain-Stay Length435mm435mm435mm435mm435mm435mm
Wheelbase1027mm1050mm1060mm1063mm1082mm1101mm
Top-Tube Length (horizontal)532mm554mm573mm580mm603mm628mm
Bike Stand-Over Height714mm756mm788mm813mm849mm875mm
Seat-Tube Length355mm416mm453mm483mm533mm563mm
Seat-Tube Angle73.5°73.5°73.5°73.5°73.5°73°
Geometry

Rider Reviews

  • 4.6
  • 16 Reviews

Fantastic ride

Bike is very light and fast! If someone looking city bike you can't go wrong with this one!

Would Recommend?
Yes!

Name:
Jozef

Helpful?

Great ride smooth power transfer,

Great ride smooth power transfer, gear range is wide enough to do both steep and flat with a reasonable top speed ,

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

Helpful?

Could you a larger front

Could you a larger front ring. Feels like I'm always riding in the highest gear. Otherwise an outstanding bike! It's like riding around on a road bike but actually comfortable. 10/10 if you plan to use it for your commute as I do.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

Helpful?

Super nice bike and ride.

Super nice bike and ride. Choose your specialized store that will build the bike wisely.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

Helpful?

Got the bike early Jun

Got the bike early Jun 2022, loving it so far. Overall well rounded bike with solid frame quality, definitely have more potential if you are willing to swap out the wheel and drive train which I'm gonna touch on later. Slick design, really nice color and paint finish. I went for 4.0 exclusively because of this matt gray look with the reflective ring on the tires. The one star I've taken off is for the components. While the default drivetrain does deliver adequate performance and riding experience, it would've been even better if Specialized were to stick with Sora components through-out the drivetrain. Both shifters and front derailleur were from microShift and the crankset was FC-MT210-2 which wasn't even listed in the specs on the website. Shifting is just okay, definitely not great for a $1,500 bike and my front shifter came in broken. My bike shop was able to submit a warranty claim and SP sent a replacement right away. I get it, carbon frame does eat up most of the prices, and the fact that you get full 9r carbon frameset with rest of the components for $1,500 in 2022 is a pretty sweet deal by itself, but imo I do think someone who's willing to spend $1,500 on a fitness hybrid probably wouldn't mind spending 1 or $200 more for nicer components. Really do wish SP could come out with customized build where you get to pick the frame, color, drivetrain and etc.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

Helpful?

Perfect Long Commute/Road Bike

Have had 2 of these bikes over the last 8 years. The perfect commute bike IMO. I don't like drop bars, so having an upright position, but multiple angles is great. The bike is responsive (stiff), but still very comfortable and super light.

Would Recommend?
Yes!

Name:
Solon

Helpful?

Great bike

Just about everything on this bike is perfect. The versatility is amazing and ideal for the fitness rider. Im 5'8" @175lbs and I'm riding a Large frame and fit is best I've ever had on a bike. Only complaint about my bike are the cranks. They came flying off at about 100 miles and nearly wrecked. Crank arm clamps on top bottom bracket and no crankbolt... Not ideal. Better cranks on this bike would be a plus.

Would Recommend?
Yes!

Name:
Phil

Helpful?

Would i buy it again? No but i have no regrets

well unfortunately the crank conspiracy is actually true. my crank also broke, before my sirrus 4.0 broke, i do admit it was the smoothest ride but not the fastest or lightest. good bike but im sure with research you can find a better bike at a cheaper price. If you want smooth ride, yes go for it but dont expect speed or a reliable crank.


Name:
Will

Helpful?

I would definitely buy this bike all over again!

I bought my 4.0 from Bayou Bicycles in N.O. and had the best experience. Their excellent staff and mechanics made sure that the recall concerning the crank issue was handled immediately. It's the smoothest hybrid out there for the money and not short on style. I've received compliments just about everytime I'm on it! Look no further folks, this hybrid is TOPS! Kudos to SPECIALIZED! Thx.guys!


Name:
N.O. F.

Helpful?

Great commuter geometry and value for dollar

Compliant shock absorbing ride, decent spec, nice fit and finish. I changed the bar to one the same width with about an inch of rise and went with the 38mm pathfinder tires as my commute road is a bit bumpy. The seat is unforgiving and I would have happily paid for a better distance seat. I will probably put a Brooks seat on it and Planet Bike Cascadia Fenders. Very happy overall.


Name:
Pez

Helpful?