Sirrus Limited SL4
Part No.  

Sirrus Limited SL4

Part No.  
Combining the heart of the world's best road bikes with a flat-bar, urban-friendly form, Sirrus Limited redefines the notion of versatility. The super light FACT carbon frame and fork (both with Zertz) is stiff, fast, and highly compliant.
  • FACT IS constructed carbon frame with Endurance Road geometry, Zertz inserts, and tapered head tube delivers the pure speed of a high-end road bike in a flat-bar package
  • FACT carbon fork with Zertz inserts for a quick, responsive road feel and forgiving ride
  • Adjustable 4-position oversized forged alloy stem with 31.8mm bar clamp for strength and versatile positioning
  • Body Geometry Targa gel grips lock on and help alleviate hand pain and tingling fingers, integrated bar ends for changing hand position included
  • Specialized Pro FACT carbon crankset with 50/34 configuration for lightweight, wide-range gearing

Technical Specifications

BOTTOM BRACKET OS integrated, sealed bearings
CHAIN KMC X-10, 10-speed, reusable Missing Link, Ti
CRANKSET Specialized Pro, FACT carbon
SHIFT LEVERS Custome, K-Edge Ui2 shifters for flat bar
FRONT DERAILLEUR Shimano Ultegra Ui2, 10-Speed
CASSETTE SRAM Apex, 10-speed, 11-32t
CHAINRINGS 50/34, with KMC X-10, 10-speed, reusable Missing Link, Ti chain
REAR DERAILLEUR Shimano Ultegra Ui2, 10-Speed
FRONT HUB Sirrus 460V, forged alloy, double sealed, smooth ground race, 24h
REAR WHEEL Roval Rapide SL35
REAR HUB Forged , sealed mechanism, ground races, cassette, custom shape and graphic, 32h
INNER TUBES Specialized Presta Valve
SPOKES Stainless, 2.0mm (14g)
FRONT TIRE Specialized Espoir Elite, 60 TPI, Aramid folding bead, 25c
REAR TIRE Specialized Espoir Elite, 60 TPI, Aramid folding bead, 25c
FRONT WHEEL Roval Rapide SL35
SADDLE Specialized Romin Evo, FACT Carbon rails, 143mm
TAPE Specialized Body Geometry Targa lock-on with Integrated Barend
SEATPOST Specialized CG-R, FACT carbon, 27.2
HANDLEBARS Specialized Double Butted Alloy Flatbar, 31.8mm, 6deg back bend
STEM Specialized Elite-Set, 3D forged alloy, 4-position adjustable, 4-bolt 31.8mm clamp
BRAKE LEVERS Shimano Alloy, flat handlebar road style
REAR BRAKE AXIS DC 2.0, Dual Pivot
PEDALS Sirrus pedal, 1.5mm Varus Angle, nylon body, symmetric alloy cage, low profile bearing system, toe clip capable
HEADSET 1-1/8"" upper, 1-3/8"" lower Campy style integrated cartridge bearing, with 15mm alloy conical spacer
SEAT BINDER Forged alloy, 32.6mm
FORK Specialized FACT carbon full monocoque w/ Zertz inserts
FRAME Specialized FACT 10r carbon, FACT IS construction, compact race design w/ Zertz inserts, 1-1/8” - 1 3/8” head tube


Geometry Chart

- Geometry

Crank Length 170mm 170mm 172.5mm 172.5mm 175mm 175mm 175mm
Stem Length 75mm 90mm 100mm 100mm 110mm 110mm 120mm
Handle-Bar Width 400mm 420mm 420mm 420mm 440mm 440mm 440mm
Wheelbase 983mm 989mm 1000mm 1010mm 1029mm 1038mm 1053mm
Seat-Tube Length, B-B Center to Top 445mm 475mm 495mm 515mm 540mm 565mm 600mm
Head-Tube Length 125mm 145mm 165mm 190mm 225mm 245mm 260mm
Top-Tube Length, Horizontal 518mm 537mm 548mm 565mm 582mm 600mm 615mm
Front-Center 582mm 588mm 595mm 606mm 621mm 628mm 643mm
Head-Tube Angle 72° 72° 72° 72.5° 72.5° 73° 73°
Stand-Over Height 730mm 756mm 776mm 798mm 829mm 851mm 877mm
Fork Rake 49mm 49mm 49mm 49mm 49mm 49mm 49mm
Trail 59mm 59mm 59mm 56mm 56mm 53mm 53mm
Chain-Stay Length 412mm 412mm 415mm 415mm 418mm 420mm 420mm
Seat-Tube Angle 75.5° 74° 73.5° 73.25° 73° 72.5° 72.5°
B-B Drop 73mm 73mm 71.5mm 71.5mm 70mm 70mm 70mm
Seat-Post Length 300mm 350mm 350mm 350mm 350mm 350mm 350mm