Part No.  


Part No.  
Technical Specifications
IF YOU'RE ONLY GOING TO HAVE ONE BIKE the Sirrus is it. Built for the best balance of speed and control, every FACT carbon or A1 Premium Aluminum Sirrus combines the low weight, high comfort and easy speed of our performance road bikes with the enhanced ergonomics and stability of a flat handlebar.
  • The hourglass speedstays on the Specialized A1 Premium Aluminum Sirrus frame provide a smooth ride.
  • The aluminum fork has integrated rack and fender mounts, so you can easily add what you need to carry all your gear, comfortably.
  • Body Geometry Comfort grips prevent hand pain and tingling fingers.
  • With Shimano’s Revo 8-speed twist shifter, you don’t need to lift a finger to change gears.
  • The easy-on-your-soft-parts Body Geometry Fitness saddle is designed for long-term comfort.

Technical Specifications

CHAIN KMC Z-51, 8-speed
BOTTOM BRACKET Sealed cartridge, square taper, 68mm x 113mm
CRANKSET Sugino Triple
FRONT DERAILLEUR Shimano Altus, 31.8 clamp, bottom pull
SHIFT LEVERS Shimano Revo, 8-speed twist shifter
CASSETTE Shimano HG-40, 8-speed 11-32t
CHAINRINGS 48 x 38x 28t
FORK Specialized Comp, A1 Premium Aluminum w/ Cr-Mo steerer, rack and fender mounts
FRONT HUB Specialized sealed, 32h, QR
REAR HUB Specialized forged alloy, 32h, double sealed bearings, cassette, QR
INNER TUBES Specialized standard presta tube
SPOKES Stainless 14g
FRONT TIRE Specialized All Condition Sport, 700x28c, 60TPI w/ Flak Jacket
RIMS Alex S500, sleeve joint, CNC sidewalls, 32h
REAR TIRE Specialized All Condition Sport, 700x28c, 60TPI w/ Flak Jacket
SADDLE Body Geometry Fitness, 155mm width
SEATPOST Alloy 2-bolt, 27.2mm
STEM Specialized 3D forged 6061 butted alloy
HANDLEBARS Specialized Event, A1 Premium Aluminum, 25mm rise
GRIPS Body Geometry Comfort II, triple density gel
FRONT BRAKE Forged 6061 alloy, 108mm linear pull, standardpads
BRAKE LEVERS Forged alloy brake levers
REAR BRAKE Forged 6061 alloy, 108mm linear pull, standard pads
PEDALS Silver cage, black body, w/ toe clip and strap
HEADSET Specialized Mindset, 1-1/8"" integrated threadless, steel cage bearings, 40mm alloy cone with two 5mm alloy spacers
SEAT BINDER Specialized alloy 31.8mm
FRAME Specialized A1 Premium Aluminum, fully manipulated tubing, compact design, integrated headset, hourglass speedstays