Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 700c -
Groupset Altus, Shimano -
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 Sirrus A1 Premium aluminum, fully manipulated tubing, compact design, hourglass speedstays, integrated headset
Suspension Fork
Aluminum legs and crown w/ 7075 aluminum steerer, w/ rack eyelets
Drivetrain
Rear Derailleur
Shimano Altus
Front Derailleur
Shimano Altus
Shift Levers
Shimano EF-50, EZ Fire
Cassette
Shimano HG-40, 8-speed, 11-32t
Crank
Shimano FCM-191
Bottom Bracket
Sealed cartridge, square taper, 68mm
Chain
KMC Z-51
Pedals
Silver cage/black body, w/ black toe clips and strap
Wheels
Front Hub
Forged alloy, sealed, QR, 32h
Rear Hub
Forged alloy, double-sealed, cassette, QR, 32h
Rims
Alex S500, aluminum, sleeve joint, CNC machined sidewalls
Spokes
Stainless 14g
Tires
Specialized All Condition Sport, 700x32c, wire bead, 60TPI, w/ Flak Jacket protection
Brakes
Brakes
Forged 6061 aluminum V-Brake, 108mm linear pull, w/ standard pads
Brake Levers
Shimano EF-50 (integrated w/ shifter)
Cockpit
Stem
3D forged, 2-bolt, 25.4mm
Handlebar
Specialized Sirrus Elite, 6061 aluminum, small riser, 25.4mm
Headset
Cage bearings integrated HS. w/ 20mm of spacers w/ top cap
Seat
Saddle
Body Geometry ""Roulux"" w/ steel rails
Seatpost
Alloy, two-bolt clamp, 27.2mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Front Center | 614 mm | 613 mm | 619 mm | 630 mm | 641 mm |
| Rake | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm |
| Trail | 73 mm | 65 mm | 63 mm | 60 mm | 57 mm |
| Top Tube Length | 530 mm | 545 mm | 560 mm | 580 mm | 600 mm |
| Seat Tube Angle | 76 ° | 75 ° | 74 ° | 73.5 ° | 73 ° |
| Seat Tube Length | 400 mm | 445 mm | 480 mm | 515 mm | 565 mm |
| Head Tube Angle | 70 ° | 71.25 ° | 71.5 ° | 72 ° | 72.5 ° |
| Head Tube Length | 135 mm | 155 mm | 185 mm | 215 mm | 250 mm |
| Chainstay Length | 440 mm | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1042 mm | 1038 mm | 1045 mm | 1056 mm | 1066 mm |
| Bottom Bracket Drop | 76 mm | 74 mm | 70 mm | 70 mm | 70 mm |
| Standover Height | 727 mm | 763 mm | 796 mm | 824 mm | 860 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 |
Model Overview
Sirrus is a Specialized Sirrus model. Specialized released 176 bikes variations of this model so far. You can easily view all of the Specialized Sirrus bikes models from 2010, here.
Safety
Make sure you wear a helmet on every ride, and that your bike performs well. In short, this means checking the tires, brakes, and chain to make sure everything is in good working order.
Fitness bikes average price
According to our math, the average price for a trustworthy Fitness bike is 656$. However, even though the average price of a Fitness bike is lower, you might still be able to get a top-quality bike. 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
The fork on this bike is made out of aluminum, which doesn’t add too much extra weight to the bike. However, it is not so stiff as steel or carbon forks are.
Wheels size
The wheels on Sirrus are the 700c aluminum type. These wheels are the most used kind for road bikes in general. However, while they give you great speed and control, these wheels are not so bump-friendly.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike 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 short, it won’t be difficult to find the right one for you.