Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices
Today’s Deals2021 Cannondale
F-Si Carbon 4
A 29″ carbon frame hardtail crosscountry bike with high-end components.
Compare the full range
Manufacturer Price
$3,350| Weight | 24.5 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Hardtail, 100mm |
| Fork | Cannondale Lefty Ocho |
| Wheels | 29″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | X1, NX Eagle |
| Brakes | Shimano Deore Hydraulic Disc |
5'2" – 5'5"
5'5" – 5'10"
5'7" – 6'1"
6'0" – 6'6"
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
Feb 2020 · Aaron Borrill
Fast, composed and damn-good looking, Cannondale's F-Si Carbon 3 proves the hardtail concept is anything but dead
Stealthy aesthetics
Impressive ride quality
Telepathic handling dynamics
Decent spec level
Could be lighter
Dec 2019 · McCoy
A sleek, race-ready cross-country weapon
Jan 2019 · Guy Kesteven
Uniquely-forked, arse-kicking ultralight XC racer but not for the faint-hearted or under-financed. Buy if you want a fast and ferocious XC racer
Unique fork and wishlist kit spec make it a real head turner, seriously light yet stiff enough to track hard, well-controlled but lightweight fork, nicely balanced between max power delivery and reasonable punishment
Unique features can create spares issues, high cost goes with the territory, not the lightest frame, fork or off-the-peg bike
Nov 2018 · Steve Solt
This carbon hardtail is light, sharp, and features the distinctive Lefty Ocho fork
May 2018 · Cory Benson
Before the World Cup XC racing in Albstadt, we put in some first rides on Cannondale's next gen carbon XC hardtail & its all-new single crown Lefty fork. Built as an ultimate hardtail for steep & technically challenging modern courses, we turned some hot laps on the World Cup track, riding with the bike's design team.
| Frame | BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset BB Standard: PF30, 83mm, Press Fit Color: Alpine |
|---|---|
| Fork | Lefty Ocho, 100mm, Chamber Damper with remote lockout, OppO Spring System, tapered steerer, 55mm offset Travel: 100mm |
| Bottom Bracket | SRAM DUB PF30 MTB83 |
| Headset | Integrated, 1-1/8 to 1.5", sealed angular contact bearings (Integrated steer stop size small and extra small only) |
| Stem | Cannondale 3, 6061 Alloy, 31.8, 7° |
| Handlebar | Cannondale 2 Flat, butted 2014 Alloy, 31.8mm, 3° rise, 8° sweep, 760mm |
| Saddle | Fabric Scoop Shallow Sport, steel rails |
| Seatpost | Cannondale C3, 6061 Alloy, 27.2 x 350mm (S), 400mm (M-XL) Type: Rigid |
| Pedals | Not included |
| Grips | Fabric FunGuy |
| Rear Derailleur | SRAM NX Eagle |
|---|---|
| Crank | SRAM X1-1000 Eagle DUB, 34T, Ai offset |
| Shifters | SRAM NX Eagle, 12-speed |
| Cassette | SRAM SX Eagle, 11-50, 12-speed |
| Chain | SRAM SX Eagle, 12-speed |
| Brakes | Shimano MT500 hydraulic disc, 160/160mm RT54 rotors Type: Shimano Deore Hydraulic Disc |
| Brake Levers | Shimano MT500 hydraulic disc |
| Rims | WTB STX i23 TCS, 32h, tubeless ready |
|---|---|
| Spokes | DT Swiss Competition |
| Front Hub | Lefty 60 |
| Rear Hub | Shimano MT400 12x148 |
| Tires | (F) Schwalbe Racing Ray Performance, 29 x 2.25", Addix Compound, tubeless ready, (R) Schwalbe Racing Ralph Performance, 29 x 2.25", Addix Compound, tubeless ready |
First added July 7
Last updated September 12
Not listed for 1,726 days