Specialized · Sirrus

Sirrus 4.0

2022

$559.99

Manufacturer price · US market. Not a local price.

Specialized Sirrus 4.0
Double-butted alloyHandlebar
Body Geometry Power SportSaddle
Specialized A1 SL Premium AluminumFrame
Specialized FACT 9r Carbon MonocoqueFork
Tektro HD-R280 · 160 mm / 140 mmBrakes
MicroSHIFT RD-R55S · 10 speedsDrivetrain
RoadSport Reflect · 32 mmTyres

Tap a number to see the part.

Double-butted alloy

Handlebar

The handlebar and stem are where your hands steer the bike. Their width and length set how upright or stretched out you sit.

Body Geometry Power Sport

Saddle

The saddle and seatpost carry your weight. The height of the seatpost sets your pedalling position.

Specialized A1 SL Premium Aluminum

Frame

The frame is the bike's backbone: every other part is fixed to it. Its material and shape decide its weight and how it feels to ride.

Specialized FACT 9r Carbon Monocoque

Fork

The fork holds the front wheel. A suspension fork absorbs bumps at the front; its travel is how far it can compress.

Tektro HD-R280 · 160 mm / 140 mm

Brakes

Brakes slow the bike. Disc brakes squeeze a rotor fixed to the wheel hub; rim brakes squeeze the wheel rim itself.

MicroSHIFT RD-R55S · 10 speeds

Drivetrain

The drivetrain turns your pedalling into motion: the cranks, the chain, the cassette and the derailleur that changes gear.

RoadSport Reflect · 32 mm

Tyres

Tyres are the bike's only contact with the ground. Their width and tread decide grip, comfort and rolling speed.

© Specialized Bicycle Components

Equipment

Partial coverageChecked: August 25, 2026Manufacturer page
Fork brand
Specialized
Source text
  • “Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5” — Fork
Front brake brand
Tektro
Source text
  • “Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm” — Front Brake
Front brake type
Hydraulic disc
Source text
  • “Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm” — Front Brake
Front brake rotor diameter
160 mm
Source text
  • “Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm” — Front Brake
Rear brake brand
Tektro
Source text
  • “Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm” — Rear Brake
Rear brake type
Hydraulic disc
Source text
  • “Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm” — Rear Brake
Rear brake rotor diameter
140 mm
Source text
  • “Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm” — Rear Brake
Front tyre width
32 mm
Source text
  • “RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c” — Front Tire
Rear tyre width
32 mm
Source text
  • “RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c” — Rear Tire
Frame material
Aluminium
Source text
  • “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” — Frame
Cassette speeds
10
Source text
  • “Sunrace CSRS0, 10-speed, 11-28t” — Cassette
Cassette teeth
11/28
Source text
  • “Sunrace CSRS0, 10-speed, 11-28t” — Cassette
Chainring teeth
48/32
Source text
  • “48/32T” — Chainrings

Components

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
Crank lengthXXS
165mm
Crank lengthXS
165mm
Crank lengthS
170mm
Crank lengthM
172.5mm
Crank lengthL
172.5mm
Crank lengthXL
175mm
Fork
Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5
Handlebar widthXXS
580mm
Handlebar widthXS
580mm
Handlebar widthS
600mm
Handlebar widthM
600mm
Handlebar widthL
620mm
Handlebar widthXL
620mm
Front brake
Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm
Stem lengthXXS
60mm
Stem lengthXS
70mm
Stem lengthS
70mm
Stem lengthM
80mm
Stem lengthL
90mm
Stem lengthXL
100mm
Rear brake
Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm
Saddle widthXXS
155mm
Saddle widthXS
155mm
Saddle widthS
155mm
Saddle widthM
143mm
Saddle widthL
143mm
Saddle widthXL
143mm
Shift levers
MicroSHIFT, 10-speed
Seatpost lengthXXS
300mm
Seatpost lengthXS
300mm
Seatpost lengthS
350mm
Seatpost lengthM
350mm
Seatpost lengthL
400mm
Seatpost lengthXL
400mm
Front derailleur
MicroSHIFT FD-R522, Band-clamp
Rear derailleur
MicroSHIFT RD-R55S, short cage
Cassette
Sunrace CSRS0, 10-speed, 11-28t
Chain
KMC, X10, EPT anti-corrosion coating, 10-speed w/ Missing Link™
Crankset
Praxis Alba M24, solid forged arms, 6061 outer ring, steel inner ring, 110 BCD, 10-speed
Chainrings
48/32T
Bottom bracket
Praxis M24, BSA
Rims
700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
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
Spokes
Stainless, 14g
Front tyre
RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
Rear tyre
RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
Inner tubes
700x28/38mm, 48mm Presta valve
Stem
Future Stem, Comp
Handlebar
Double-butted alloy, 9-degree backsweep, 31.8mm
Bar tape
Specialized Body Geometry Contour, lock-on
Saddle
Body Geometry Power Sport, steel rails
Seatpost
Alloy, 2-bolt, 14mm offset, 27.2mm
Seatpost clamp
Bolt-type, 31.8mm
Pedals
Specialized Body Geometry Fitness, platform, plastic

Geometry

Frames drawn: Specialized Sirrus 4.0 · XXS.
Specialized Sirrus 4.0 · XXS
MeasureXXSXSSMLXL
Wheels700c700c700c700c700c700c
587 mm590 mm606 mm635 mm651 mm672 mm
355 mm371 mm376 mm382 mm386 mm398 mm
111 mm125 mm143 mm169 mm186 mm208 mm
69.5°70°71°71°71°70°
284 mm284 mm284 mm284 mm284 mm284 mm
70 mm70 mm70 mm70 mm70 mm70 mm
78 mm75 mm75 mm68 mm68 mm68 mm
Fork Length (full)395 mm395 mm395 mm395 mm395 mm395 mm
51 mm51 mm51 mm51 mm51 mm51 mm
602 mm618 mm629 mm634 mm644 mm663 mm
440 mm440 mm440 mm440 mm440 mm440 mm
1,033 mm1,049 mm1,060 mm1,065 mm1,074 mm1,093 mm
529 mm549 mm559 mm573 mm581 mm599 mm
722 mm750 mm778 mm810 mm831 mm700 mm
360 mm395 mm440 mm470 mm510 mm530 mm
73.5°73.5°73.5°73.5°73.5°73.5°

Similar bikes

Similar bicycles: same category and type, comparable US MSRP

How we choose
  • Same category and electric or non-electric type
  • US MSRP ratio no greater than 1.3
  • Other families, ordered by price and stack/reach proximity

Manufacturer suggested retail prices are for the US market in USD. They are not local retail prices.