Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 700c -
Travel Front 20mm -
Fork Specialized Future Shock 1.5
-
Groupset microSHIFT Centos, Praxis -
Suspension Hardtail -
Drivetrain 2 × 10 -
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
Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5
Drivetrain
Rear Derailleur
MicroSHIFT RD-R55S, short cage
Front Derailleur
MicroSHIFT FD-R522, Band-clamp
Shift Levers
MicroSHIFT, 10-speed
Cassette
Sunrace CSRS0, 10-speed, 11-32t
Crank
Praxis Alba M24, solid forged arms, 6061 outer ring, steel inner ring, 110 BCD, 10-speed, 48/32T
Bottom Bracket
Praxis M24, BSA
Chain
KMC, X10, EPT anti-corrosion coating, 10-speed w/ Missing Link™
Pedals
Specialized Body Geometry Fitness, platform, plastic
Wheels
Front Hub
Alloy, 6-bolt disc, sealed cartridge bearing, high-low flange, 12x100mm thru-axle, 28h
Rear Hub
Alloy, 6-bolt disc, sealed cartridge bearings, high-low flange, 12x142mm thru-axle, 28h
Rims
700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Spokes
Stainless, 14g
Tires
Front: RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c, Rear: RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
Brakes
Brakes
Front: Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm, Rear: Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm
Cockpit
Stem
Future Stem, Comp
Handlebar
Double-butted alloy, 9-degree backsweep, 31.8mm
Seat
Saddle
Body Geometry Power Sport, steel rails
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 4.0 is part of the Specialized Sirrus model. Specialized launched 176 bikes of this model so far. You can get a glimpse at all models from 2023, by clicking on this link.
Model range prices
Specialized Sirrus 1.0 2023 is the cheapest bike model and costs 650$. Specialized Sirrus 6.0 2023 is the most expensive one and costs 3000$.
Safety
When cycling always take safety very seriously. Wear a helmet, obey the traffic rules and wear hi-vis clothes. In short, take care of yourself so others can take care of you.
Average price for Fitness bikes
If you want an acceptable Fitness bike you should know that the average price is 656$. However, even if your budget is less than the average, you might still be able to get a top-quality Fitness bike. As a general rule of thumb, you should always read reviews about the bike and its components before buying it to ensure you don’t pay too much.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 1600$. Doing a quick comparison, we notice that Sirrus 4.0 price is 143.9% higher than the average cost of a Fitness bike.
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.
Sirrus 4.0 components
Fork
This bike has the Specialized Future Shock 1.5 fork installed. The fork’s travel is 20mm. Bike forks are great for shock absorption and provide you with a smooth ride. In conclusion, always look for a fork with decent travel when you buy a bike.
Fork material
Sirrus 4.0 has a carbon fork, so, it’s a great addition to the bike’s value. However, carbon forks should be regularly inspected for damage because even the smallest crack could cause the fork to fall apart.
Wheels
When it comes to wheels, the Sirrus 4.0 bike is equipped with the 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
For your safety, it is important to have quality breaks on your bike. Specialized Sirrus 4.0 has Hydraulic Disc brakes installed. These kinds of brakes are among the most popular models used on bikes. To sum up, your safety is in good hands.