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Product Description


The Cannondale F-Si Carbon 3 is a lightweight and fast hardtail cross-country bike that comes in at an affordable price. Cannondale designed the F-Si to provide the best balance of climbing and descending in an ultra-lightweight frame. This bike is a brilliant sprinter, stable through technical terrain, and has extremely confident handling. If you are looking to hop on your first serious cross-country bike, the Cannondale F-Si Carbon 3 is one of the best and most affordable choices you can make.

The BallisTec carbon frame of the Cannondale F-Si keeps it very lightweight while lowering the price compared to Hi-Mod carbon models. This helps you fly up climbs without losing any of the confident descending you need. The new Lefty Ocho fork is responsible for a huge amount of the bike’s weight reduction, coming in at 250 grams lighter than its previous iteration. This single-sided fork is not only very lightweight, but also adds strength, stiffness, and responsive steering. With race-tuned stiffness and a smooth suspension with low friction, the Lefty Ocho fork tops off an extremely impressive frame.

The geometry of the Cannondale F-Si promotes race-quality performance. It is longer and lower, increasing the reach of the headtube slightly for the best control. A low flat back gives centered weight distribution, letting you stay in your most efficient race position without losing any stability or control. The Ai offset drivetrain helps keep the chainstays very short for traction and agility, especially on climbs. An integrated seat binder allows for more length on the seatpost which provides some extra comfort on this hardtail machine. From top to bottom, the F-Si is designed to keep you moving at a blazing fast pace without losing an ounce of comfort or control.

A smooth ride quality is imperative for cross-country riders and the F-Si delivers on that need. Race-tuned stiffness provides outstanding power transfer of flat ground while delivering a smooth feel and proper dissipation of energy from bumps and vibration. Flat mount disc brakes add to that smooth quality, providing modulated stopping power in all weather conditions along with heat dissipation. This version is equipped with a SRAM GX Eagle 12-speed groupset for reliable mechanical shifting at an outstanding price. Cannondale’s F-Si Carbon 3 is an excellent machine for the rider who wants to balance high performance and a reasonable price.


  • Frame: F-Si BallisTec Carbon, SAVE, PF30A, tapered head tube, Speed Release 12mm thru-axle, Ai Offset
  • Fork: Lefty Ocho Carbon 29”, 100mm Chamber Damper with cable lockout, OppO Spring System. Tapered steerer, 55mm offset
  • Headset: Integrated 1 1/8 – 1 1/2 sealed angular contact bearings
  • Seatpost: Cannondale C1 Full Carbon, 27.2 x 400mm


  • Bottom Bracket Cannondale Alloy PressFit30
  • Brake Calipers SRAM Level T Hydro Disc Calipers
  • Brake Levers SRAM Level T Hydro Disc
  • Cassette SRAM PG-1230, NX Eagle, 11-50, 12-Speed
  • Chain SRAM GX Eagle, 12-Speed
  • Crankset Truvativ Stylo 6K, 34T, Ai Custom
  • Fork Lefty Ocho, 29", 100mm, Chamber Damper With Cable Lockout, OppO Spring System, Tapered Steerer, 55mm Offset
  • Grips Cannondale Locking Grips
  • Handlebar Cannondale C2 Flat, Butted 2014 Alloy, 8-Degree Sweep, 760mm
  • Headset Integrated, 1-1/8 To 1.5", Sealed Angular Contact Bearings (Integrated Steer Stop Size Small Only)
  • Pedals Not Included
  • Rear Derailleur SRAM GX Eagle
  • Rotors SRAM Level T Hydro Disc, 160/160mm Centerline Rotors
  • Saddle Fabric Scoop Flat Elite, Cro-Mo Rails
  • Seatpost Cannondale C2, Carbon, 27.2 X 400mm
  • Shifters SRAM GX Eagle, 12-Speed
  • Stem Cannondale C3, 3D Forged 6061 Alloy, 1-1/8", 31.8, 7-Degree
  • Tires Schwalbe Racing Ray Performance 29 X 2.25" Front, Racing Ralph Performance 2.25" Rear, Addix Compound, Tubeless Ready
  • Wheel - Front Stan's NoTubes Crest MK3 Rims, Stan's Neo Lefty Hub, 28h, Tubeless Ready, DT Swiss Competition Spokes
  • Wheel - Rear Stan's NoTubes Crest MK3 Rims, Stan's Neo Hub, 28h, Tubeless Ready, 12x148 Rear W/HG Driver DT Swiss Competition (Ai Offset Dish)
*Specifications are subject to change.


Bike Geometry
SizeSeat Tube (c-c)Seat Tube (c-t)Top Tube LengthHead Tube LengthChain Stay LengthSeat Tube AngleHead Tube AngleStand Over HeightWheel SizeStackReach
S * - 583 90 427 - - 755 - 602 400
M 430 - 606 101 - - - 793 - 612 420
L 480 - 629 113 - - - 828 - 623 440
XL 530 - 653 126 - - - 863 - 635 460

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