F-Si Carbon 4

To create the fastest XC race rocket the world has ever seen, innovation is not an option, it's a necessity. Using our System Integration approach, every part of the new F-Si - from the asymmetrically offset rear triangle and drivetrain, to the new-school geometry and custom rake Lefty - was designed as a system, fully integrated in the pure pursuit of speed.

SPECIFICATIONS 

Frame

F-Si Asymmetric, BallisTec Carbon, SPEED SAVE, PF30A, 1.5 Si Head Tube, 27.5" (S), 29" (M-X)

Fork

Lefty 2.0, 100mm, PBR Isolated Damper Technology with XC+ tune and updated controls, Offset - 50mm (S), 55mm (M-X)

Crank

Cannondale Si, Ai, BB30, FSA 26/36 rings

Crank Option 1

N/A

Bottom Bracket

Cannondale Alloy PressFit30

Shifters

Shimano SLX w/ I-Spec

Cog Set

Shimano HG-50, 11-36, 10-speed

Chain

Shimano HG50, 10-speed

Front Derailleur

Shimano M618 Deore

Rear Derailleur

Shimano XT, Shadow Plus, 10-speed

Rims

Stan's ZTR Rapid, 32 hole, tubeless ready (Ai offset lacing)

Hubs

Lefty 60 front, Formula DC-22 rear (Ai offset lacing)

Tires

Schwalbe Racing Ralph Performance 29/27.5x2.1", tubeless ready

Pedals

N/A

Brakes

Shimano Deore, 180/160mm

Handlebar

Cannondale C3 flat, 6061 double-butted alloy, 700mm

Stem

Cannondale C3, 6061 Alloy, 1.5", 31.8, -5 deg.

Headset

Cannondale HeadShok Si

Brake Levers

Shimano Deore, I-Spec

Spokes

DT Swiss Competition (Ai offset lacing)

Grips

Cannondale Locking Grips

Saddle

Prologo K3

Seat Post

Cannondale C3, 6061 alloy, 27.2x350mm (S,M) 400mm (L,X)

Rear Shock

N/A


GEOMETRY