2021 Cannondale F-Si Carbon 2

A 27.5″ carbon frame hardtail crosscountry bike with ultra high-end components, priced near the low end of the F-Si model range. Compare the full range

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2021 Cannondale F-Si Carbon 2
MSRP$5,550
Weight20.9 lbs
Front Travel100mm
FrameCarbon
ForkCannondale Lefty Ocho Carbon
Wheels27.5″ Carbon
Drivetrain1 × 12
GroupsetXTR
BrakesHydraulic Disc
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Gearing

1 × 12 — 12 speed

F-Si Carbon 2

28 mph

Similar Bikes

27 mph

The F-Si Carbon 2 is easier to ride up hills than similar bikes.

The F-Si Carbon 2 is geared about the same as similar bikes for riding downhill.


Estimated Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more

Spec level →$0$1,000$2,000$3,000$4,000$5,000
This bike
Other crosscountry bikes

Reviews

December 2019

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

A sleek, race-ready cross-country weapon

Read Full Review

October 2019

MTBR
Review: Cannondale F-Si Throwback

- Mtbr.com

Read Full Review

November 2018

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

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

Read Full Review

January 2019

BikeRadar
Cannondale F-Si Hi-Mod World Cup review

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

Read Full Review

May 2018

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

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.

Read Full Review


Geometry

Sizing
XS

5'1" – 5'6"

SM

5'2" – 5'5"

MD

5'5" – 5'10"

LG

5'7" – 6'1"

XL

6'0" – 6'6"

🐐 Estimated


Specs
Build
Frame

BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset, SAVE, PF30-83, Tapered head tube, Speed Release 12mm thru axle, Ai Offset

BB StandardPF30, press-fit

Fork

Lefty Ocho Carbon, 27.5/29", 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset

Bottom Bracket

Cannondale Alloy PressFit30

Headset

Integrated, 1-1/8 to 1.5", sealed angular contact bearings (Integrated steer stop size small only)

Stem

Cannondale 1, 7075 Alloy, 1-1/8", 31.8, 7°

Handlebar

Cannondale 1 Flat, Carbon, 31.8mm, 9° backsweep, 760mm

Saddle

Fabric Scoop Flat Race, titanium rails

Seatpost

Cannondale 2 Carbon 27.2x400

Pedals

Not included

Grips

Cannondale Locking Grips

Groupset
Rear Derailleur

Shimano XTR, Shadow Plus

Crank

HollowGram, BB30 w/X-Sync® SpideRing, 34T, Ai offset

Shifters

Shimano XT, 12-speed

Cassette

Shimano XT, 10-51, 12-speed

Chain

Shimano XT, 12-speed

Brakes

Shimano Deore XT Race disc, 160/160mm XT rotors

Brake Levers

Shimano Deore XT Race hydro disc

Wheels
Rims

HollowGram 23, Superlight Hi-Impact Carbon, tubeless ready, 28h, 23mm inner width

Spokes

Formula Grand Forza

Front Hub

(F) Lefty 60

Rear Hub

(R) Hollowgram w/ DT internals 12x148 w/ Micro Spline

Tires

(F) Schwalbe Racing Ray 27.5/29 x 2.25", Snake Skin, Addix Speedgrip Compound, tubeless ready(R) Schwalbe Racing Ralph 27.5/29 x 2.25", Snake Skin, Addix Speed Compound, tubeless ready

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2021 Cannondale F-Si Carbon 2
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