2021 Cannondale

F-Si Hi-MOD World Cup

A 29″ carbon frame hardtail crosscountry bike with ultra high-end components.
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MSRP$11,000
Weight19.4 lbs  
FrameCarbon
SuspensionHardtail, 100mm
ForkCannondale Lefty Ocho Carbon
Wheels29″ Carbon
Drivetrain1 × 12 Electronic
GroupsetXX1 Eagle AXS, X01 Eagle AXS
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 Hi-MOD World Cup

27 mph

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Highest gear

(descending)

Spec Level

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

Compare the full F-Si model range

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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
Cycling News
Cannondale F-Si Carbon 3 review

Feb 2020 · Aaron Borrill

Fast, composed and damn-good looking, Cannondale's F-Si Carbon 3 proves the hardtail concept is anything but dead

Highs
  • Stealthy aesthetics

  • Impressive ride quality

  • Telepathic handling dynamics

  • Decent spec level

Lows
  • Could be lighter

Read Review

Mountain Bike Action
First Look Cannondale F-Si - Mountain Bike Action Magazine

Oct 2019 · Brandon

Cannondale F-Si For this First Look we opened up a bike box from Cannondale. The Cannondale F-Si Carbon 3 is a Sleek, Race-Ready Cross-Country Weapon. We

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MTBR
Review: Cannondale F-Si Throwback

Oct 2019

- Mtbr.com

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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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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Hi-MOD 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, 83mm, Press Fit

Fork

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

Travel100mm

Bottom Bracket

SRAM DUB PF30 MTB83

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

ENVE M5, Carbon, 760mm, 31.8mm, 5mm rise, 9° sweep

Saddle

Prologo Zero II, Tirox rails

Seatpost

ENVE Carbon, 27.2 x 400mm, 0mm offset

TypeRigid

Grips

Cannondale Locking Grips

Groupset
Rear Derailleur

SRAM XX1 Eagle AXS

Crank

SRAM XX1 Eagle DUB, 34T, Ai offset

Shifters

SRAM Eagle AXS, 12-speed

Cassette

SRAM XG-1299, 10-50, 12-speed

Chain

SRAM XX1 Eagle, 12-speed

Brakes

SRAM Level Ultimate hydro disc, 160/160mm Centerline rotor

TypeHydraulic Disc

Brake Levers

SRAM Level Ultimate hydro disc

Wheels
Rims

ENVE M525 Carbon, 24h, tubeless ready

Spokes

DT Swiss Aerolite (Ai Offset dish - rear)

Front Hub

(F) Lefty 60

Rear Hub

(R) DT Swiss C36 12x148 w/ XD driver

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

Rider Notes
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Last updated June 23
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