2018 Cannondale

F-Si Carbon 1

A 29″ carbon frame hardtail crosscountry bike with ultra high-end components.
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Manufacturer Price

$5,999
FrameCarbon
SuspensionHardtail, 100mm
ForkCannondale Lefty
Wheels29″ Carbon
Drivetrain1 × 12
GroupsetXX1 Eagle, X01 Eagle
BrakesHydraulic Disc
Where to Buy
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

29 mph

F-Si Carbon 1

27 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

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Reviews
Mountain Bike Action
MBA Bike Test: Cannondale F-Si Carbon 3

Dec 2019 · McCoy

A sleek, race-ready cross-country weapon

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Bicycling
The Cannondale F-Si Carbon 2 Is a Privateer Racer's Dream

Nov 2018 · Steve Solt

This carbon hardtail is light, sharp, and features the distinctive Lefty Ocho fork

Read Review

Bikerumor
First Rides: Cannondale F-Si hardtail & Lefty Ocho fork on a World Cup XC course

May 2018

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.

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BikeRadar
Cannondale F-Si Alloy 1 review

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

Highs
  • Impressively smooth and speed-sustaining yet efficiently quick frame, the Lefty fork is stiff, accurate and well damped

Lows
  • OK but not outstanding component selection, even with alloy frame

  • Specific front wheel and metal, QR axle frame limit upgrade potential

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Canadian Cycling Magazine
Trail Test: The Cannondale F-Si Carbon 2, an entry model with top specs for tearing up the XC course

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.

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Velo
Pro Bike Gallery: Keegan Swenson’s Cannondale F-Si Carbon Team

Jun 2015 · Logan VonBokel

The reigning U23 cross-country national champion's ride is chock-full of ENVE carbon, Cannondale tech, and American livery.

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MTBR
Pro Bike: Marco Fontana’s Cannondale F-Si Carbon Team

Mar 2015

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

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

F-Si, BallisTec Hi-MOD Carbon, SAVE, PF30A, 1.5 Si Head Tube, Ai Offset, 27.5" (S), 29" (M-XL)

BB StandardPF30, 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)

Travel100mm

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

TypeRigid

Pedals

Not included

Grips

Cannondale Locking Grips

Groupset
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

TypeHydraulic Disc

Brake Levers

SRAM TLM

Wheels
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

Rider Notes
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Last updated February 20
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