Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 700c -
Groupset Altus, Tourney -
Suspension Rigid -
Drivetrain 3 × 8 -
Brakes Rim
Sizing
Recommended size guide.
XS
156cm - 166cm
SM
163cm - 174cm
MD
171cm - 182cm
LG
179cm - 189cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Specialized A1 Premium Aluminum, Fitness Geometry, fully-manipulated butted tubing, integrated lower bearing, fender/rack mounts
Suspension Fork
Steel, straight blades, fender/rack mounts
Drivetrain
Rear Derailleur
Shimano Altus, 8-speed
Front Derailleur
Shimano Tourney, top swing, dual pull, 31.8mm band clamp
Shift Levers
Shimano EF500, EZ Fire Plus, 8-speed
Cassette
Shimano, 8-speed, 11-32t
Crank
Stout, forged alloy, 48/38/28T w/chainguard
Bottom Bracket
BSA, square taper, cartridge bearings
Chain
KMC X8, 8-speed w/reusable MissingLink
Pedals
Specialized Fitness platform
Wheels
Front Hub
Specialized V-brake, alloy, loose ball bearings, 9mm, QR
Rear Hub
Specialized, 8-/9-speed cassette body, QR
Rims
700c, 6061 aluminum double-wall
Spokes
Stainless, 14g
Tires
Nimbus Reflect, 700x32mm, 26TPI, Flak Jacket protection
Brakes
Brakes
V-brake, linear pull
Cockpit
Stem
Alloy, 4-bolt, 20-degree rise, 25.4mm clamp
Handlebar
Specialized, alloy, 9-degree backsweep, 25.4mm
Seat
Saddle
Canopy Sport, steel rails
Seatpost
Alloy, 12mm offset, 2-bolt clamp, 27.2mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.46 mm | 1.49 mm | 1.5 mm | 1.54 mm | 1.58 mm |
| Bottom Bracket Height | 281 mm | 281 mm | 281 mm | 281 mm | 281 mm |
| Front Center | 621 mm | 629 mm | 637 mm | 647 mm | 667 mm |
| Rake | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm |
| Trail | 70 mm | 67 mm | 64 mm | 60 mm | 60 mm |
| Stack | 558 mm | 579 mm | 595 mm | 621 mm | 654 mm |
| Reach | 383 mm | 389 mm | 397 mm | 404 mm | 413 mm |
| Top Tube Length | 550 mm | 565 mm | 575 mm | 595 mm | 615 mm |
| Seat Tube Angle | 73.5 ° | 73.3 ° | 73.5 ° | 73 ° | 73 ° |
| Seat Tube Length | 395 mm | 440 mm | 485 mm | 530 mm | 570 mm |
| Head Tube Angle | 70.5 ° | 71 ° | 71.5 ° | 72 ° | 72 ° |
| Head Tube Length | 130 mm | 150 mm | 165 mm | 190 mm | 225 mm |
| Chainstay Length | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1051 mm | 1060 mm | 1068 mm | 1077 mm | 1098 mm |
| Bottom Bracket Drop | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Standover Height | 711 mm | 745 mm | 781 mm | 816 mm | 854 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 156 cm | 163 cm | 171 cm | 179 cm | 185 cm |
| Rider Max Height | 166 cm | 174 cm | 182 cm | 189 cm | 195 cm |
About this model
Sirrus is a Specialized Sirrus model. Specialized launched 176 bikes of this model so far. You can easily view all of the Specialized Sirrus bikes models from 2017, here.
Safety
Your safety should be the top priority when you go for a ride. In short, make sure that you always use a helmet, high visibility clothing, and proper lights when riding at night-time.
Fitness bikes average price
According to our math, the average price for a trustworthy Fitness bike is 656$. However, you could also get a good Fitness bike even if you pay a lower amount than the average price. As a general rule of thumb, you should always read reviews about the bike and its components before buying it to ensure you don’t pay too much.
Sirrus components
Fork material
When it comes to the fork, this bike has a steel one, which tends to be more flexible than carbon forks in general. However, a carbon fork is considerably lighter.
Wheels
As for the wheels, Specialized Sirrus 2017, has a 700c aluminum model. There is no doubt, that 700c wheels are very popular on all road bike models. However, these wheels don’t perform so well when passing over obstacles.
Brakes
When you want to stop the bike in time, the brakes are vital. The Sirrus has Rim brakes. Rim brakes are cheaper than hydraulic brakes, and also easier to maintain. However, they have problems in wet conditions.
Sizes
There are 5 sizes available for this model. Rider height can be anywhere between 156 cm – 195 cm (5.12 ft – 6.4 ft). In conclusion, you won’t have a problem finding one that suits you.