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2021 Sirrus 1.0

12 Reviews

You have places to go, people to see, and fitness goals to achieve. We get it—life…

Product Details

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. This Sirrus features a reliable set of components that are built to withstand years of daily abuse, like comfortable Body Geometry touchpoints and fuss-free mechanical V-brakes. 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 clean internal cable routing delivers a bike that is 1.1lb (.5kg) lighter than previous version.
Upright position with Body Geometry touchpoints for comfort and control.
Reflective graphics on frame and tires for maximum visibility.

Technical Specifications

DRIVETRAIN

Rear Derailleur

Shimano Altus, 7-/8-speed

Shift Levers

Shimano EF500, 7-speed

Front Derailleur

Shimano Tourney FD-TY710

Cassette

Shimano HG200, 7-speed, 12-32t

Crankset

Shimano Tourney, 3-piece, 46/30T

Chainrings

46/30T w/ chainguard

Bottom Bracket

BSA, square-taper, 68mm

Chain

KMC X8 w/ Missing Link™

BRAKES

Rear Brake

V-brake, linear pull

Front Brake

V-brake, linear pull

ACCESSORIES

Pedals

Specialized Body Geometry Fitness, platform, plastic

WHEELS & TIRES

Rims

700C rim brake, double-wall alloy, 22mm depth, 21mm internal width, rim brake

Front Hub

Alloy, loose ball bearing, quick-release, 32h

Rear Hub

Alloy, loose ball bearings, quick-release, 7-speed freehub, 32h

Front Tire

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

Rear Tire

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

FRAMESET

Frame

Specialized A1 Premium Aluminum, Fitness Geometry, Butted tubing, Internal Cable Routing, V-Brake, Quick-Release, Plug + Play rack/fender mounts

Seat Binder

Bolt-type, 31.8mm

COCKPIT

SeatPost

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

Stem

Specialized Flowset, integrated, 3D-forged alloy, 4-bolt, 12-degree rise, 31.8mm clamp

Tape

Specialized Body Geometry XCT, lock-on

Handlebars

Double-butted alloy, 5-degree backsweep, 25.4mm

Saddle

Bridge Sport, Steel rails, 155/143mm

Suspension

Fork

Hi-Ten steel, V-Brake, Plug + Play fender mounts, low rider rack mounts, quick-release

WHEELS

Spokes

Stainless, 14g

Inner Tubes

Schrader valve, 40mm

* 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

	XXS	XS	S	M	L	XL
Crank Length	170mm	170mm	170mm	170mm	175mm	175mm
Stem Length	60mm	60mm	75mm	75mm	90mm	110mm
Handlebar Width	580mm	580mm	600mm	600mm	620mm	620mm
Seatpost Length	300mm	300mm	350mm	350mm	400mm	400mm
Saddle Width	155mm	155mm	155mm	143mm	143mm	143mm
Stack	536mm	555mm	562mm	593mm	608mm	632mm
Reach	373mm	388mm	393mm	398mm	402mm	414mm
Head-Tube Length	121mm	139mm	147mm	175mm	191mm	217mm
Head-Tube Angle	69.5°	70°	70°	71°	71°	71°
B-B Height	278mm	278mm	278mm	278mm	278mm	278mm
B-B Drop	70mm	70mm	70mm	70mm	70mm	70mm
Trail	75mm	72mm	72mm	65mm	65mm	65mm
Fork Length (full)	395mm	395mm	395mm	395mm	395mm	395mm
Fork Rake/Offset	51mm	51mm	51mm	51mm	51mm	51mm
Front-Center	605mm	622mm	630mm	635mm	645mm	665mm
Chain-Stay Length	440mm	440mm	440mm	440mm	440mm	440mm
Wheelbase	1036mm	1053mm	1061mm	1066mm	1075mm	1096mm
Top-Tube Length (horizontal)	531mm	552mm	559mm	573mm	582mm	601mm
Bike Stand-Over Height	692mm	715mm	745mm	775mm	805mm	827mm
Seat-Tube Length	360mm	395mm	440mm	470mm	510mm	530mm
Seat-Tube Angle	73.5°	73.5°	73.5°	73.5°	73.5°	73.5°

Manual Downloads

Specialized Bicycle Owner's Manual (All Languages)

Rider Reviews

12 Reviews

03/19/2024

Love it

Fantastic bike, great quality, really nice to ride, lightweight

Would Recommend?: Yes!

Verified Buyer

Name:: Spencer B.

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12/19/2022

Fabulous looking bike, a little

Fabulous looking bike, a little bit heavy but good enough for most situations in the city.

Would Recommend?: Yes!

Verified Buyer

Name:: Guest G.

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07/10/2022

Great road bike! Would definitely

Great road bike! Would definitely recommend!

Would Recommend?: Yes!

Verified Buyer

Name:: Guest G.

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07/07/2021

Informazione

Io la possiedo da mesi e mi trovo molto bene. Versatile comoda e tutto sommato leggera, mi chiedevo posso m9ntare un vostro manubrio da corsa?

Verified Buyer

Name:: Gio

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07/07/2021

Informazione

Io la possiedo da mesi e mi trovo molto bene. Versatile comoda e tutto sommato leggera, mi chiedevo posso m9ntare un vostro manubrio da corsa?

Verified Buyer

Name:: Gio

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06/19/2021

Good for beginners to intermediate

Easy shifting makes for a smooth riding, ergonomically shaped which makes riding for 4 to 5 hours very pleasant

Name:: Libertyson1776

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02/28/2021

Nice bike

Just bought this for my wife and its really nice very good components only thing i noticed that was different is its a 2x crank and on this tech spec it shows it as a 3x.

Name:: Amanda

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10/02/2020

Loving the Sirrus 1.0

Just recently bought the 1.0 and I am loving every bit of it! I've been putting it to the test and this thing can handle dirt, gravel, bumpy city streets, and pretty much everything you throw at it (within reason). Solid bike and with the internal cable routing, it looks as good as it runs.

Name:: Walker A.

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09/26/2020

The Sirrus 1.0 is really a great fitness bicycle

59 year old that recently sold a vintage road racing bike. Couldn't ride it anymore, literally a pain in the neck. Missed cycling. So I decided to get a Specialized Sirrus bike, but which one? The Sirrus line is either Aluminum or carbon. I decided to dip the toe in the water with the 1.0. I don't do gravel, so no X model. I'm in love. The fitness style upright geometry is super comfortable. I can see where I'm going (a plus). I love that the brakes and shift levers are all one unit for a clean cockpit. The ride is so much better than I would have imagined.The bike feels lively and fun. It seems very well made. Mostly Shimano components on this one. They work very well together. Shifts are immediate and crisp. Braking is very good with the rim brakes. I am very happy with this purchase. The only thing I'm changing are the pedals. I'm going back to a clip-less (clipped in) pedal, as my feel slip off when pedaling down hill. Thats a personal preference. Most beginners will be fine with the supplied pedals. I'm 6'2"". I got the XL size. Went to Hilltop Bicycles in Summit. They were great.

Name:: Nate R.

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09/18/2020

Awesome bike. Would Recommend.

*I own the Sirrus 1.0 Single Speed* I wanted a good entry-level bike that has the ability to be a commuter and fitness bike. This bike checks those boxes. Looks clean, feels very comfortable to ride. I am 5'4 so I got a size small, feels great! Would Recommend!

Name:: Antonio G.

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08/28/2020

Love this bike. And would definitely buy again.

I bought the Specialized Sirrus 1.0 in color black. In size Medium. I am 5'6. Fits perfectly. It's lightweight. Very fast. And also very good looking!

Name:: Vincent S.

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06/22/2020

Love this bike!

I bought this recently after an injury and so I couldn't ride anything too heavy. It is the perfect bike for fitness and gives a smooth ride and is attractive. I would recommend it!

Name:: Therunner

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