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Today’s DealsF-Si Carbon 1
A 29″ carbon frame hardtail crosscountry bike with ultra high-end components.
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Manufacturer Price
$5,999| Frame | Carbon |
|---|---|
| Suspension | Hardtail, 100mm |
| Fork | Cannondale Lefty |
| Wheels | 29″ Carbon |
| Drivetrain | 1 × 12 |
| Groupset | XX1 Eagle, X01 Eagle |
| Brakes | SRAM Level TLM Hydraulic Disc |
5'2" – 5'8"
5'6" – 5'11"
5'10" – 6'3"
6'1" – 6'7"
🐐 Estimated
None yet.
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Summary
The Cannondale F-Si is a high-performance cross-country bike praised for its lightweight carbon frame, efficient climbing, and responsive handling. The updated Lefty Ocho fork offers precise steering and smooth suspension, making it a standout for technical sections and descents. While it excels in race-ready performance, the absence of a dropper post and the high price tag are noted drawbacks.
Lightweight carbon frame
Efficient climbing and power delivery
Responsive and precise handling
Smooth suspension performance with Lefty Ocho fork
Good clearance for wider tires
High price tag
No dropper post included
Fork may feel harsh at lower speeds
This is a bike built for the privateer cross country or endurance racer.Bicycling
All in all it seems like the F-Si + Lefty Ocho combo can double as a proper pro-level race hardtail and a lightweight, competent singletrack trail bike as well.
It’s just pure, smooth suspension action, for superb control
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Dec 2019 · McCoy
A sleek, race-ready cross-country weapon

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.

Sep 2016 · Guy Kesteven
The top metal F-Si is an impressively fast yet controlled and fatigue-free flyer. Buy if you favour alloy over carbon and enjoy racing rough, rocky trails on a forgiving ride
Impressively smooth and speed-sustaining yet efficiently quick frame, the Lefty fork is stiff, accurate and well damped
OK but not outstanding component selection, even with alloy frame
Specific front wheel and metal, QR axle frame limit upgrade potential

Oct 2015 · Canadian Cycling Magazine
A brand’s base model of a bike line usually shows cost-saving choices throughout its spec. Often the frame material and production process are altered as well.
Jun 2015 · Logan VonBokel
The reigning U23 cross-country national champion's ride is chock-full of ENVE carbon, Cannondale tech, and American livery.
Mar 2015 · Kristen Gross
Lightweight racer of Italian national XC champ and Olympic bronze medalist spec'd with SRAM XX1 drivetrain, ENVE wheels, and Prologo saddle and grips. - Mtbr.com
| Frame | F-Si, BallisTec Hi-MOD Carbon, SAVE, PF30A, 1.5 Si Head Tube, Ai Offset, 27.5" (S), 29" (M-XL) BB Standard: PF30, Press Fit |
|---|---|
| Fork | Lefty 2.0 Carbon, 2Spring, 100mm, XLR Isolated Damper Technology with XC+ tune and XLoc remote, 55mm offset (29), 50mm offset (27.5) Travel: 100mm |
| Bottom Bracket | Cannondale Alloy PressFit30 |
| Headset | Cannondale HeadShok Si |
| Stem | Cannondale C1, 7075 Alloy, 31.8, -5° |
| Handlebar | Cannondale C1 flat, Carbon, 760mm |
| Saddle | Fabric Scoop Flat Race w/ Titanium Rails |
| Seatpost | Cannondale SAVE Full Carbon, 20mm Offset, 27.2x400mm Type: Rigid |
| Pedals | Not included |
| Grips | Cannondale Locking Grips |
| Rear Derailleur | SRAM XX1 Eagle, Type 3 RBC, 12-speed |
|---|---|
| Crank | Truvativ Stylo Carbon Eagle, BB30, 34T, Ai Custom |
| Shifters | SRAM X01 Eagle, 12-speed |
| Cassette | SRAM XG-1295 Eagle, 10-50, 12-speed |
| Chain | SRAM Eagle 12 speed |
| Brakes | SRAM Level TLM, Centerline Rotors, 180/160mm Type: SRAM Level TLM Hydraulic Disc |
| Brake Levers | SRAM TLM |
| Rims | HollowGram 23, Superlight Hi-Impact Carbon, Tubeless Ready, 28hole, 23mm inner |
|---|---|
| Spokes | DT-Swiss Aerolite (Ai Offset dish - Rear) |
| Front Hub | Lefty 60 front, C36 by DT-Swiss Rear, Star Ratchet, 135x9mm, 28 hole (Ai Offset dish - Rear), QR |
| Rear Hub | Lefty 60 front, C36 by DT-Swiss Rear, Star Ratchet, 135x9mm, 28 hole (Ai Offset dish - Rear), QR |
| Tires | Schwalbe Rocket Ron EVO Snakeskin, 29x2.25", folding, Tubeless Ready |
First added February 20
Last updated February 20
Not listed for 3,035 days