MSRP | $1,500 | $1,799 |
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Where to Buy | $1,500 At Specialized | — $1 At |
Category | Fitness | Fitness |
Weight | 23.7 lbs | |
Carbon | Carbon | |
Fork | Carbon | Carbon |
Wheels | Aluminum | Aluminum |
Wheel Size | 700c | 700c |
Brakes | Hydraulic Disc | Hydraulic Disc |
Groupset | Sora, microSHIFT R9 | Deore |
Drivetrain | 2 × 9 | 1 × 10 |
Brand Site | ||
Summary | The Specialized Sirrus 4.0 is a 700c carbon frame fitness bike with mid-range components and hydraulic disc brakes. |
Based on frame geometry and build specs.
Frame | Specialized FACT 9r carbon, Fitness Geometry, 12x142mm thru-axle, internal cable routing, flat-mount disc, Plug + Play fender mounts BB Standard: BSA, 68mm, Threaded Colors: Satin Flake Silver / Charcoal / Black Reflective; Gloss Uv Lilac / Satin Black Reflective | BB Standard: BSA, 68mm, Threaded Colors: Satin Flake Silver / Charcoal / Black Reflective; Gloss Uv Lilac / Satin Black Reflective |
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Fork | Specialized FACT carbon, 12x100mm thru-axle, flat-mount disc, Plug + Play fender mounts | Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew |
Bottom Bracket | Shimano 68mm threaded | |
Stem | Specialized, 3D-forged alloy, 4-bolt, 7-degree rise | Size: XS, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length; Size: S, M, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length; Size: L, XL, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 110mm length |
Handlebar | Double-butted alloy, 9-degree backsweep, 31.8mm | Size: XS, S, Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm width; Size: M, L, XL, Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm width |
Saddle | Body Geometry Power Sport, steel rails | Bontrager H1 |
Seatpost | Alloy, 12mm offset, 2-bolt clamp, 27.2mm | Bontrager alloy, 27.2mm, 12mm offset, 330mm length |
Pedals | Specialized Body Geometry Fitness, platform, plastic | Bontrager City pedals |
Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic |
Rear Derailleur | Shimano Sora, 9-speed | Shimano Deore M5120, long cage |
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Front Derailleur | microSHIFT R9, 9-speed, 31.8mm clamp | |
Crank | 50/34T | Size: XS, S, Prowheel alloy, 42T narrow-wide ring, 170mm length; Size: M, L, XL, Prowheel alloy, 42T narrow-wide ring, 175mm length |
Shifters | microSHIFT, 9-speed | Shimano Deore M4100, 10 speed |
Cassette | Shimano Sora, 9-speed, 11-34t | Shimano Deore M4100, 11-46, 10 speed |
Chain | KMC X9, 9-speed w/ Missing Link™ | KMC X10, 10 speed |
Brakes | Front: Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm, Rear: Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm | Promax DSK-927 hydraulic disc, flat mount, 160mm rotor |
Rims | 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h | Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, Presta valve |
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Spokes | Stainless, 14g | |
Front Hub | Alloy, 6-bolt disc, sealed cartridge bearing, high-low flange, 12x100mm thru-axle, 28h | Formula CL-51 alloy, 100x5mm QR |
Rear Hub | Alloy, 6-bolt disc, sealed cartridge bearings, high-low flange, 12x142mm thru-axle, 28h | Formula CL-52 alloy, 135x5mm QR |
Tires | Front: RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c, Rear: RoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c | Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40mm |
Disc Rotors | Shimano RT10, CenterLock, 160 mm |