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Sirrus Single-Speed – Men's Spec

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2020 Sirrus Single-Speed – Men's Spec

We understand that fitness bikes can get a bad rap. Most of the time, they err on the side of value over performance, which leaves YOU feeling in between, and frankly, a little burned. But we're happy to say that our Sirrus is out to change that by providing the perfect blend of everyday efficiency with the performance you need to hit your fitness goals at speed. This Sirrus was designed for the ultimate ease of use, which is why it has a single gear that removes all the fuss and maintenance of shifters and derailleurs. No need to worry about shifting, just hop on and start cruisin'. And while you’re at it, the comfortable Body Geometry touchpoints are sure to take the sting out of long rides, while rack and fender mounts give you the option to lug your stuff around town on the bike instead of on your back. *While this frame platform was designed from the ground up for all riders, some of the models feature gender-specific touchpoints.

Technical Specifications

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FRAMESET

FRAME

Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing

SUSPENSION

FORK

Steel, V-brake, 1-1/8" steerer, QR, rack/fender mounts

COCKPIT

HANDLEBARS

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

STEM

10-degree rise, 25.4mm clamp

TAPE

Specialized Neutralizer, Body Geometry, locking grip

SADDLE

Specialized Canopy Sport, steel rails, 155mm

SEATPOST

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

SEAT BINDER

Bolt-type, 31.8mm

BRAKES

REAR BRAKE

V-brake, linear pull

FRONT BRAKE

V-brake, linear pull

DRIVETRAIN

CASSETTE

SunRace, freewheel, 17t

CRANKSET

3-piece square-taper, forged alloy

CHAINRINGS

42T

BOTTOM BRACKET

BSA, square-taper, 68mm

CHAIN

CHAIN, KMC,Z1.WIDE.NPNP.VN,NP/NP,SINGLE SPEED,1/2"x1/8",W/O MISSING LINK

WHEELS & TIRES

RIMS

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

FRONT HUB

Loose ball bearings, 9x100mm spacing, 32h

REAR HUB

Fixed gear, loose ball bearings, 10x120mm spacing, 32h

SPOKES

Stainless, 14g

FRONT TIRE

Espoir Sport, 60 TPI, wire bead, double BlackBelt protection, 700x30mm

REAR TIRE

Espoir Sport, 60 TPI, wire bead, double BlackBelt protection, 700x30mm

INNER TUBES

Schrader valve, 40mm

ACCESSORIES

PEDALS

Specialized Dirt

* 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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SMLXLXXL
Crank Length170MM170MM170MM175MM175MM
Handlebar Width580mm580mm600mm600mm620mm
Stem Length75mm75mm75mm90mm90mm
Saddle Width155mm155mm155mm155mm155mm
Seatpost Length300mm350mm350mm350mm350mm
Stack564mm592mm610mm638mm670mm
Reach388mm400mm402mm414mm426mm
Head Tube Length133mm159mm176mm203mm236mm
Head Tube Angle70°71°71.5°72°72°
BB Height275mm275mm275mm275mm275mm
BB Drop70mm70mm70mm70mm70mm
Trail71mm65mm62mm58mm58mm
Fork Length, Full410mm410mm410mm410mm410mm
Fork Rake/Offset51mm51mm51mm51mm51mm
Front Center626mm638mm640mm656mm678mm
Chainstay Length440mm440mm440mm440mm440mm
Wheelbase1056mm1068mm1071mm1087mm1109mm
Top Tube Length, Horizontal555mm575mm583mm603mm631mm
Bike Standover Height735mm775mm805mm845mm875mm
Seat Tube Length430mm470mm510mm550mm580mm
Seat Tube Angle73.5°73.5°73.5°73.5°73°
Geometry

Rider Reviews

  • 5
  • 3 Reviews

Specialized Sirrus 2.0 Single Speed

This is the perfect bicycle for cruising around town. Very high quality construction and very light weight. Can be operated as both a single speed or fixie. I promise you that you will love this bicycle.

Would Recommend?
Yes!

Name:
Tony

Helpful?

Sirrus S.S Review

I normally ride a mountain bike (Specialized Pitch). And that bike is phenomenal. This bike the Specialized Sirrus Single Speed - is just pure bike. Brings back my childhood days. The S.S Bike is for the minimal guy like me, you don't need shifters to have fun, just hop on and ride your bike. The Gear ratio I would say it's a medium. Not to hard not to easy. It's perfect for almost all types of counters such as hill and head winds. I recommended this bike to everyone who wants to use a single speed, hybrid-road type bike. This also has a fixed Gear option as well.


Name:
Jon B.

Helpful?

Sustained-pace fitness bike, great for cruising too.

I normally ride a hybrid street/mtb. I'm constantly gearing up or down to get to a comfortable ratio at high speeds. This bike is set to hit that torque sweet spot at a moderate gear ratio while being suitable for most circumstances. I thought this bike was geared a little high (less torque required, easier acceleration, easier to maintain cruising speed, lower top speed, high speed requires more rpms). After pacing myself and hitting the 10 mile mark, i'm glad this bike is set where it's at. I believe the gear-inches is a low-ish 64. This accelerates easily from a stop. If you add headwinds and inclines, you'll be glad you aren't pushing harder. I wanted something that would prevent me from pedaling too hard or shifting too much, so I could have a sustained workout pace for around 20-30 miles without overdoing it, or major fatigue. This is like riding a consistent level 3 on a stationary bike.Geared bikes are faster, but you can go pretty fast on this bike. This is more of a spinner than a masher. Unless you have high rpms you'll top out, but this forces you to keep a sustained pace instead of mashing and gassing. It has a flippable hub for fixed gear, but I ride it freewheel because mounting, stopping, maneuvering, creeping, leaning turns, stretching, and being able to cruise while I adjust myself or my audio is too crucial. I'm constantly pedalling regardless. Geometry is perfect for me (M) 5'9"" 170 lbs, feels like a street bike. I can ground my feet without hitting the crossbar. I don't brush the front wheel when turning. Simplistic design makes it super light. It's a great town ride. I bought this considering it to be a starter-bike for fixed, but I'm riding it single for exercise and cruising, and don't see me upgrading soon. Good quality. If I ever gear up, I might just buy a second one. Under $400, and get more than what you pay for.


Name:
Nb84

Helpful?