2018 Cannondale

F-Si Carbon 2

A 27.5″ / 29″ carbon frame hardtail crosscountry bike with high-end components.
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MSRP$4,599
FrameCarbon
SuspensionHardtail, 100mm
ForkCannondale Lefty
Wheels27.5″ / 29″ Carbon
Drivetrain1 × 12
GroupsetX01 Eagle, GX Eagle
BrakesHydraulic Disc
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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 2

27 mph

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Highest gear

(descending)

Sizing
XS

5'1" – 5'6"

SM

5'4" – 5'9"

MD

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'0" – 6'5"

🐐 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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BikeRadar
Cannondale F-Si Hi-Mod World Cup review

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

Highs
  • 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

Lows
  • Unique features can create spares issues, high cost goes with the territory, not the lightest frame, fork or off-the-peg bike

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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

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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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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 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

Prologo Zero II STN Rail

Seatpost

Cannondale SAVE Full Carbon, 20mm Offset, 27.2x400mm

TypeRigid

Pedals

Not included

Grips

Cannondale Locking Grips

Groupset
Rear Derailleur

SRAM X01 Eagle, 12-speed

Crank

Truvativ Stylo 6k Eagle, BB30, 34T, Ai Custom

Shifters

SRAM GX Eagle, 12-speed

Cassette

SRAM XG-1275 Eagle, 10-50, 12-speed

Chain

SRAM Eagle 12-speed

Brakes

SRAM Level TL, 180/160mm, Centerline Rotors

TypeHydraulic Disc

Brake Levers

SRAM Level TL

Wheels
Rims

HollowGram 23, Superlight Hi-Impact Carbon, Tubeless Ready, 28hole, 23mm inner

Spokes

HollowGram Double Butted Straight Pull (Ai Offset dish - Rear)

Front Hub

Lefty 60 front, SRAM 900, 135x9mm, 28 hole (Ai Offset dish - Rear), QR

Rear Hub

Lefty 60 front, SRAM 900, 135x9mm, 28 hole (Ai Offset dish - Rear), QR

Tires

Schwalbe Rocket Ron EVO Snakeskin, 29/27.5x2.25", folding, Tubeless Ready

Rider Notes
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Last updated February 20
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