Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 700c -
Groupset Deore -
Suspension Rigid -
Drivetrain 1 × 11 -
Brakes Hydraulic Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing, internal cable routing, flat-mount disc, 12x142mm thru-axle, Plug + Play rack/fender mounts
Suspension Fork
Carbon Monocoque, 12x100mm flat thru-axle, flat mount disc, Future Shock 1.5
Drivetrain
Rear Derailleur
Shimano Deore M5100, SGS, 11-speed
Shift Levers
Shimano Deore M5100, 11-speed
Cassette
Shimano Deore M5100, 11-speed, 11-42t
Crank
Forged aluminum arms, 2-piece, 24mm spindle, Narrow-wide Aluminum chainring, 40T
Bottom Bracket
Threaded BSA 68mm
Chain
KMC X11, 11-speed w/ Missing Link™
Pedals
Specialized Body Geometry Fitness, platform, plastic
Wheels
Front Hub
Alloy, Center Lock™ disc, high-low flange, sealed cartridge bearings, 12x100mm spacing, 24h
Rear Hub
Alloy, Center Lock™ disc, high-low flange, sealed cartridge bearings, 12x142mm spacing, 28h
Rims
700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Spokes
Stainless, 14g
Tires
Front: Pathfinder Sport, 700x38mm, Rear: Pathfinder Sport, 700x38mm
Brakes
Brakes
Shimano BR-MT200, hydraulic disc, 160mm
Cockpit
Stem
Future Stem, Comp
Handlebar
Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm
Seat
Saddle
Bridge Comp, Hollow Cr-mo rails, 155/143mm
Seatpost
Alloy, 2-bolt, 14mm offset, 27.2mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XXS | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.66 mm | 1.6 mm | 1.62 mm | 1.67 mm | 1.7 mm | 1.7 mm |
| Bottom Bracket Height | 284 mm | 284 mm | 284 mm | 284 mm | 284 mm | 284 mm |
| Front Center | 602 mm | 618 mm | 629 mm | 634 mm | 644 mm | 663 mm |
| Rake | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm | 51 mm |
| Trail | 78 mm | 75 mm | 75 mm | 68 mm | 68 mm | 68 mm |
| Stack | 581 mm | 584 mm | 600 mm | 629 mm | 645 mm | 666 mm |
| Reach | 349 mm | 365 mm | 370 mm | 376 mm | 380 mm | 392 mm |
| Top Tube Length | 523 mm | 543 mm | 553 mm | 567 mm | 575 mm | 593 mm |
| Seat Tube Angle | 73.5 ° | 73.5 ° | 73.5 ° | 73.5 ° | 73.5 ° | 73.5 ° |
| Seat Tube Length | 360 mm | 395 mm | 440 mm | 470 mm | 510 mm | 530 mm |
| Head Tube Angle | 69.5 ° | 70 ° | 70 ° | 71 ° | 71 ° | 71 ° |
| Head Tube Length | 111 mm | 125 mm | 143 mm | 169 mm | 186 mm | 208 mm |
| Chainstay Length | 434 mm | 434 mm | 434 mm | 434 mm | 434 mm | 434 mm |
| Wheelbase | 1027 mm | 1043 mm | 1054 mm | 1059 mm | 1068 mm | 1087 mm |
| Bottom Bracket Drop | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Standover Height | 694 mm | 716 mm | 744 mm | 772 mm | 804 mm | 825 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 | 700 |
Model Overview
Sirrus X 4.0 completes the Specialized Sirrus model. Specialized launched 176 bikes of this model so far. You can get a glimpse at all models from 2021, by clicking on this link.
Model range prices
The most economical model, the Specialized Sirrus 2.0 Step Through 2021 has a starting price of 650$. Specialized Sirrus 6.0 2021 on the other hand is the most expensive at 2299$.
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.
Average price for Fitness bikes
Our math shows that the average cost of a dependable Fitness bike is 656$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Fitness bike. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 1500$. If we compare this with the average Fitness bike cost we notice that the price is 128.66% more expensive.
Internal Cable Routing
This bike has an internal cable routing. As a result, this helps to preserve the bike’s cables. No more cables around your bike.
Overview of components
Fork material
The fork is made out of carbon, so, it is super light and stiff. In conclusion, a carbon fork gives you great control when steering, and is also more forgiving.
Wheels
As for the wheels, Specialized Sirrus X 4.0 2021, has a 700c aluminum model. 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
Nothing is more important on a bike than its ability to brake properly. Specialized Sirrus X 4.0 is equipped with Hydraulic Disc brakes. These kinds of brakes are among the most popular models used on bikes. To sum up, your safety is in good hands.