Specialized Sirrus 4.0 Carbon

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You have places to go, people to see, and fitness goals to achieve. We get it—life moves pretty fast, so it's a good thing Specialized made the Sirrus to help you with all of it. Wherever you're heading, the Sirrus will take you there. The Sirrus 4.0 Carbon features a super light carbon fiber construction, as well as reliable Shimano components that are built to withstand years of daily abuse on the world's pavement. Powerful hydraulic disc brakes provide reliable stopping power in any condition, and comfortable, ergonomically designed touchpoints are there to take the sting out of longer rides. So, as you push yourself to reach your goals, you'll feel more connected to your bike and know that you have the perfect partner with the Sirrus.

  • The FACT 9r carbon fiber frame and fork saves over 600 grams and is a piece of art all unto itself.

  • Through axle hub connection for positive wheel alignment and no rub disc brakes.

  • Wide range 2x9 Shimano Sora Road components for intuitive and precise shifting.



Specialized FACT 9r carbon, Fitness Geometry, 12x142mm thru-axle, internal cable routing, flat-mount disc, Plug & Play fender mounts


Specialized FACT carbon, 12x100mm thru-axle, flat-mount disc, Plug & Play fender mounts

Front Hub

Alloy, 6-bolt disc, sealed cartridge bearing, high-low flange, 12x100mm thru-axle, 28-hole

Rear Hub

Alloy, 6-bolt disc, sealed cartridge bearings, high-low flange, 12x142mm thru-axle, 28-hole


Stainless, 14g


700c disc, double-wall alloy, 22mm depth, 21mm internal width, 28-hole

Inner Tubes

Presta, 48mm valve

Front Tyre

RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c

Rear Tyre

RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c

Bottom Bracket

Shimano threaded

Shift Levers

MicroShift, 9-speed

Front Derailleur

MicroShift R9, 9-speed, 31.8mm clamp

Rear Derailleur

Shimano Sora, 9-speed


Shimano Sora, 9-speed, 11-34t


KMC X9, 9-speed with Missing Link

Front Brake

Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm

Rear Brake

Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm


Double-butted alloy, 9-degree backsweep, 31.8mm


Specialized Body Geometry, lock-on, integrated bar ends, hidden 4/5mm hex key


Specialized, 3D-forged alloy, 4-bolt, 7-degree rise


Body Geometry Power Sport, steel rails

Seat Post

Alloy, 12mm offset, 2-bolt clamp, 27.2mm

Seat Post Collar

Integrated with the frame


Specialized Body Geometry Fitness, platform, plastic


Detailed below are the Sirrus 4.0 Carbon's sizes, with their respective rider's height ranges to which they suit:

Small - 155cm to 165cm (5'1" to 5'5")

Medium - 165cm to 175cm (5'5" to 5'9")

Large - 175cm to 183cm (5'9" to 6'0")

Extra Large - 183cm to 193cm (6'0" to 6'4")

Double Extra Large - 193cm to 198cm (6'4" to 6'6")


With over 17 years experience offering quality bikes and service, you can rest assured we have deeply considered the quality of the products we sell and have the technical skills to assist if any possible problems arise.

Along with being the ‘local’ bike store to many riders in Auckland, we also have an extensive customer base of riders nationwide. Believe it or not we even have riders from overseas come to us for our quality products and expertise!

Lastly, we are riders ourselves. We are in this business because we are genuinely passionate about riding all types of bikes and are here to share our knowledge to help enhance your riding experience.

Why buy from us