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We understand that fitness bikes can get a bad rap. Most of the time, they err on the side of value over performance, which leaves YOU feeling in between, and frankly, a little burned. But we're happy to say that our Sirrus is out to change that by providing the perfect blend of everyday efficiency with the performance you need to hit your fitness goals at speed. As the starter bike to the Sirrus line, this model is spec'd with a mix of Shimano components that’ll keep you pedaling worry-free for miles, powerful hydraulic disc brakes that provide reliable stopping power in any condition, and comforting Body Geometry touchpoints that are sure to take the sting out of long rides. *While this frame platform was designed from the ground up for all riders, some of the models feature gender-specific touchpoints.
- Working with our Body Geometry team, we designed a frame that strikes the optimal balance between comfort and efficiency. The A1 SL Premium Aluminum construction pairs weight savings with rugged durability, while the rack, fender, and disc mounts give you an incredibly versatile package.
- A straight blade steel fork provides a responsive ride, while the fender and rack mounts give you the option to install fenders and racks that can keep you dry and transport your gear around town.
- Women's Body Geometry touchpoints take the sting out of riding with their ergonomically designed, scientifically tested shapes.
Technical Specifications
DRIVETRAIN
| BOTTOM BRACKET | BSA, square-taper, 68mm |
| CHAIN | KMC X8 w/ Missing Link™, 8-speed |
| SHIFT LEVERS | Shimano Acera, 8-speed |
| FRONT DERAILLEUR | Shimano Tourney, 3-speed, top-swing |
| CASSETTE | Shimano Altus, 8-speed, 11-32t |
| CHAINRINGS | 48/38/28T |
| REAR DERAILLEUR | Shimano Altus, 8-speed |
SUSPENSION
| FORK | Steel, flat-mount disc, 1-1/8" steerer, QR, Plug + Play rack/fender mounts |
COCKPIT
| SADDLE | Specialized Aldia Sport, steel rails, 155mm |
| SEAT BINDER | Bolt-type, 31.8mm |
| TAPE | Body Geometry Contour, lock-on |
| SEATPOST | Alloy, 12mm offset, 2-bolt clamp, 27.2mm |
| HANDLEBARS | Double-butted alloy, 9-degree backsweep, 31.8mm |
| STEM | Specialized, 3D-forged alloy, 4-bolt, 7-degree rise |
WHEELS & TIRES
| FRONT HUB | Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h |
| REAR HUB | Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h |
| INNER TUBES | Schrader valve, 40mm |
| SPOKES | Stainless, 14g |
| RIMS | 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h |
| FRONT TIRE | Specialized Nimbus II Sport Reflect, 60TPI, wire bead w/ Black Belt protection, 700x32mm |
| REAR TIRE | Specialized Nimbus II Sport Reflect, 60TPI, wire bead w/ Black Belt protection, 700x32mm |
BRAKES
| FRONT BRAKE | Promax F1, hydraulic disc, flat-mount, 160mm |
| REAR BRAKE | Promax F1, hydraulic disc, flat-mount, 140mm |
ACCESSORIES
| PEDALS | Specialized Body Geometry Fitness, platform, plastic |
FRAMESET
| FRAME | Specialized A1 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts |
* Specifications are subject to change without notice
Geometry
Sirrus - Geometry
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Crank Length | 165MM | 165MM | 170MM | 170MM | 170MM |
| Stem Length | 70mm | 80mm | 90mm | 100mm | 100mm |
| Seatpost Length | 300mm | 300mm | 350mm | 350mm | 350mm |
| Saddle Width | 155mm | 155mm | 155mm | 155mm | 155mm |
| Handlebar Width | 580mm | 580mm | 600mm | 600mm | 620mm |
| Reach | 372mm | 373mm | 383mm | 400mm | 402mm |
| Top Tube Length, Horizontal | 531mm | 538mm | 555mm | 576mm | 583mm |
| Stack | 537mm | 556mm | 581mm | 593mm | 611mm |
| Wheelbase | 1036mm | 1039mm | 1047mm | 1069mm | 1072mm |
| Chainstay Length | 440mm | 440mm | 440mm | 440mm | 440mm |
| Front Center | 605mm | 608mm | 617mm | 638mm | 641mm |
| BB Drop | 70mm | 70mm | 70mm | 70mm | 70mm |
| BB Height | 275mm | 275mm | 275mm | 275mm | 275mm |
| Seat Tube Angle | 73.5° | 73.5° | 73.5° | 73.5° | 73.5° |
| Head Tube Angle | 69.5° | 70° | 71° | 71° | 71.5° |
| Seat Tube Length | 345mm | 380mm | 425mm | 455mm | 495mm |
| Head Tube Length | 126mm | 144mm | 166mm | 179mm | 196mm |
| Bike Standover Height | 690mm | 715mm | 745mm | 775mm | 805mm |
| Fork Rake/Offset | 51mm | 51mm | 51mm | 51mm | 51mm |
| Fork Length, Full | 390mm | 390mm | 390mm | 390mm | 390mm |
| Trail | 75mm | 72mm | 65mm | 65mm | 62mm |