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The 2021 Cannondale F-Si Carbon 4 is a 29″ carbon frame hardtail crosscountry bike with high-end components.

2021 Cannondale F-Si Carbon 4
MSRP$3,350
Online Price
$1

At

CategoryCrosscountry
Weight24.5 lbs
FrameCarbon
ForkCannondale Lefty Ocho
Wheel Size29″
Wheel MaterialAluminum
Brake TypeHydraulic Disc
GroupsetNX Eagle, Truvativ Stylo
Drivetrain1 × 12
Gear Range

Cannondale F-Si Carbon 4

27 mph
SuspensionHardtail
Front Travel100mm
Rear Travel-
SeatpostRigid
Brand Sitecannondale.com
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F-Si Carbon 4

Geometry

Specs
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

Fork

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

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 3, 6061 Alloy, 31.8, 7°

Handlebar

Cannondale 3 Flat, 6061 double-butted Alloy, 31.8mm, 3° rise, 8° sweep, 760mm

Saddle

Fabric Scoop Flat Elite, cro-mo rails

Seatpost

Cannondale 3, 7075 Alloy, 27.2 x 400mm

Pedals

Not included

Grips

Cannondale Locking Grips

Groupset
Rear Derailleur

SRAM NX Eagle

Crank

Truvativ Stylo 6K DUB, 34T, Ai offset

Shifters

SRAM NX Eagle, 12-speed

Cassette

SRAM PG-1230, NX Eagle, 11-50, 12-speed

Chain

SRAM NX Eagle, 12-speed

Brakes

Shimano MT500 hydro disc, 160/160mm RT66 rotors

Brake Levers

Shimano MT500 hydro disc

Wheels
Rims

WTB STX i21 TCS, 28h, tubeless ready

Spokes

DT Swiss Champion

Front Hub

(F) Lefty 60

Rear Hub

(R) Formula 12x148 w/ HG driver

Tires

(F) Schwalbe Racing Ray Performance 27.5/29 x 2.25", Addix Compound, tubeless ready(R) Schwalbe Racing Ralph Performance 27.5/29 x 2.25" rear, Addix compound, tubeless ready