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Specialized Sirrus 4.0 Fitness Bike (2023)

Specialized Sirrus 4.0 Fitness Bike (2023)

Regular price $1,349.99
Regular price $1,600.00 Sale price $1,349.99
Sale Sold out
YOU SAVE $250.01
15% OFF


Height (Cm) Size
5'1"-5'4" 49
5'4"-5'6" 52
5'6"-5'9" 54
5'9"-6'0" 56
6'0"-6'3" 58
6'3"-6'6" 61

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 Shipped Direct to Your Home

Our Platinum Pro Assembly fee of only $89 (reg. $100) will be added at checkout. Your Specialized Bicycle will be built, fine-tuned and expertly packaged by our certified team of bike techs. Your new bike comes 90% built, reassembly is quick and easy with our video guides. Your new bike ships within 3-5 business days.

Pick Up at Bicycle Warehouse

$99 Ready to Ride

Bikes comes 100% built and ready to ride. This fee includes professional assembly & setup, one basic Master Service and free warranty processing. Shipped bikes are not charged this fee.

Bicycle Warehosue now offers optional Route Package Protection. Route Package Protection offers peace of mind for your shipments by providing shipping insurance. This coverage ensures that if your package is lost in transit, stolen, or damaged, you're protected. For a small percentage of the total value of your order, Route will promptly generate a replacement order or issue a refund if you no longer want the items.




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Introducing the Specialized Sirrus 4.0 Fitness Bike - your ticket to conquering life's fast lane while having a blast! With a need for speed, a craving for adventure, and a desire to crush those fitness targets, Specialized has you covered with the Sirrus. This bike isn't just a ride; it's your trusty sidekick for wherever the road takes you.

The Sirrus boasts an ultralight aluminum alloy and carbon fiber build that's tougher than your determination. Shimano's reliable components, known to endure more than your daily coffee, are ready to face the pavement's challenges head-on. Rain or shine, those hydraulic disc brakes are your ace in the hole for stopping on a dime, while the Body Geometry touchpoints, designed to treat your body like royalty, make long rides feel like a breeze.

Feel the weight of the world melt away with the Carbon FACT 9r fork - not only does it caress your ride with comfort, but it also sheds a whopping 3 pounds (that's 1.2kg) compared to the Sirrus 2.0 model. Say goodbye to wobbly wheels and greet the precision of thru-axle hub connection and rub-free disc brakes. Shifting becomes a dance of intuition with the wide-range 2x10 Shimano components, making every gear change a seamless part of the rhythm.

So, lace up those sneakers and hop on the Sirrus 4.0 - your passport to a world of speed, style, and endless fitness FUN. It's not just a bike; it's your invitation to make life's journey an unforgettable adventure!


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


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
Tape Specialized Body Geometry Contour, lock-on
Stem Future Stem, Comp
Handlebars Double-butted alloy, 9-degree backsweep, 31.8mm
Saddle Bridge Comp, Hollow Cr-mo rails, 155/143mm
Seat Binder Bolt-type, 31.8mm
SeatPost Alloy, 2-bolt, 14mm offset, 27.2mm
Front Brake Shimano BR-MT200, hydraulic disc, 160mm
Rear Brake Shimano BR-MT200, hydraulic disc, 160mm
Cassette Shimano CS-HG500, 10-speed, 11-32t
Shift Levers Shimano Tiagra, 10-speed w/ Optical Gear Display
Rear Derailleur Shimano Tiagra, 10-speed
Front Derailleur Shimano Tiagra FD-4700, Band-clamp
Chainrings 48/32, chainguard
Bottom Bracket Praxis M24, BSA
Crankset Praxis Alba M24, solid forged arms, 6061 outer ring, steel inner ring, 110 BCD, 10-speed
Chain KMC, X10, EPT anti-corrosion coating, 10-speed w/ Missing Link™
Front Tire RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
Rear Tire RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
Inner Tubes Presta, 48mm valve
Rear Hub Alloy, 6-bolt disc, sealed cartridge bearings, high-low flange, 12x142mm thru-axle, 28h
Front Hub Alloy, 6-bolt disc, sealed cartridge bearing, high-low flange, 12x100mm thru-axle, 24h
700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Spokes Stainless, 14g
Pedals Specialized Body Geometry Fitness, platform, plastic


Crank Length 165 165 170 172.5 172.5 175
Handlebar Width 580 580 600 600 620 620
Stem Length 60 70 70 80 90 100
Saddle Width 155 155 155 143 143 143
Seatpost Length 300 300 350 350 400 400
Stack 587 590 606 635 651 672
Reach 355 371 376 382 386 398
Head-Tube Length 111 125 143 169 186 208
Head-Tube Angle 69.5 70 71 71 71 70
B-B Height 284 284 284 284 284 284
B-B Drop 70 70 70 70 70 70
Trail 78 75 75 68 68 68
Fork Length (full) 395 395 395 395 395 395
Fork Rake/Offset 51 51 51 51 51 51
Front-Center 602 618 629 634 644 663
Chain-Stay Length 440 440 440 440 440 440
Wheelbase 1033 1049 1060 1065 1074 1093
Top-Tube Length (horizontal) 529 549 559 573 581 599
Bike Stand-Over Height 722 750 778 810 831 700
Seat-Tube Length 360 395 440 470 510 530
Seat-Tube Angle 73.5 73.5 73.5 73.5 73.5 73.5