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Specialized Sirrus 4.0

Specialized Sirrus 4.0
  • Color: Gloss Birch / Satin Taupe Reflective
  • Color: Gloss Cactus Bloom / Satin Mystic Blue Reflective
Size: Select size
Please select options Unavailable


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 we made Sirrus to help you with all of it. Wherever you're heading, Sirrus will take you there. Sirrus features a super light aluminum alloy and 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 Body Geometry 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 Sirrus.

- Carbon FACT 9r fork delivers comfort and saves nearly 3 pounds (1.2kg) over the Sirrus 2.0 model.
- Wide-range 2x10 Shimano components for intuitive and precise shifting.
- Thru-axle hub connection for positive wheel alignment and no-rub disc brakes.

Crank Length 165mm 165mm 170mm 172.5mm 172.5mm 175mm
Handlebar Width 580mm 580mm 600mm 600mm 620mm 620mm
Stem Length 60mm 70mm 70mm 80mm 90mm 100mm
Saddle Width 155mm 155mm 155mm 143mm 143mm 143mm
Seatpost Length 300mm 300mm 350mm 350mm 400mm 400mm
Stack 587mm 590mm 606mm 635mm 651mm 672mm
Reach 355mm 371mm 376mm 382mm 386mm 398mm
Head-Tube Length 111mm 125mm 143mm 169mm 186mm 208mm
Head-Tube Angle 69.5° 70° 70° 71° 71° 71°
B-B Height 284mm 284mm 284mm 284mm 284mm 284mm
B-B Drop 70mm 70mm 70mm 70mm 70mm 70mm
Trail 78mm 75mm 75mm 68mm 68mm 68mm
Fork Length (full) 395mm 395mm 395mm 395mm 395mm 395mm
Fork Rake/Offset 51mm 51mm 51mm 51mm 51mm 51mm
Front-Center 602mm 618mm 629mm 634mm 644mm 663mm
Chain-Stay Length 440mm 440mm 440mm 440mm 440mm 440mm
Wheelbase 1033mm 1049mm 1060mm 1065mm 1074mm 1093mm
Top-Tube Length (horizontal) 529mm 549mm 559mm 573mm 581mm 599mm
Bike Stand-Over Height 700mm 722mm 750mm 778mm 810mm 831mm
Seat-Tube Length 360mm 395mm 440mm 470mm 510mm 530mm
Seat-Tube Angle 73.5° 73.5° 73.5° 73.5° 73.5° 73.5°
Frame SizeRider Height (in)Rider Height (cm)
XX-Small 4'8" - 4'11" 142 - 150
X-Small 4'11" - 5'2" 150 - 158
Small 5'1" - 5'5" 155 - 165
Medium 5'5" - 5'9" 165 - 175
Large 5'9" - 6'0" 175 - 183
X-Large 6'0" - 6'4" 183 - 193


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
Fork Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5
Rims 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Hubs Front: Alloy, 6-bolt disc, sealed cartridge bearing, high-low flange, 12x100mm thru-axle, 24h
Rear: Alloy, 6-bolt disc, sealed cartridge bearings, high-low flange, 12x142mm thru-axle, 28h
Spokes Stainless, 14g
Tires RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
Bottom Bracket Praxis M24, BSA
Crankset Praxis Alba M24, solid forged arms, 6061 outer ring, steel inner ring, 110 BCD, 10-speed
Chainrings 48/32, chainguard
Shifters Shimano Tiagra, 10-speed w/ Optical Gear Display
Front Derailleur Shimano Tiagra FD-4700, Band-clamp
Rear Derailleur Shimano Tiagra, 10-speed
Cassette/Freewheel Shimano CS-HG500, 10-speed, 11-32t
Chain KMC, X10, EPT anti-corrosion coating, 10-speed w/ Missing Link™
Brakes Shimano BR-MT200, hydraulic disc, 160mm
Handlebars Double-butted alloy, 9-degree backsweep, 31.8mm
Tape/Grips Specialized Body Geometry Contour, lock-on
Stem Future Stem, Comp
Seatpost Alloy, 2-bolt, 14mm offset, 27.2mm
Saddle Bridge Comp, Hollow Cr-mo rails, 155/143mm
Pedals Specialized Body Geometry Fitness, platform, plastic

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Gloss Birch / Satin Taupe Reflective / XX-Small 888818893270 90923-5200 210000108246
Gloss Cactus Bloom / Satin Mystic Blue Reflective / XX-Small 888818893102 90923-5300 210000108254
Gloss Cactus Bloom / Satin Mystic Blue Reflective / X-Small 888818893454 90923-5301 210000108252