Cannondale F-Si Carbon Black Inc.

5.0 stars
 (1 Review)
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Matte Black / Large (29)
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Cannondale's F-Si Carbon Black Inc. is a true sleeper, with the high-power heart of an XC monster beating beneath that understated, stealthy black paint. The HI-MOD Ballistec carbon frame features Cannondale's breakthrough Asymmetric Integration rear triangle and drivetrain, delivering super short chainstays, an optimally dished rear wheel, and tons of mud clearance. With a 1.5-inch head tube and Cannondale's 100mm-travel Lefty 2.0 Carbon fork, keeping your front wheel pinned to your line is easy no matter what the trail throws at you. This cross country rocket's unheralded performance continues with Shimano's XTR Di2 electronic drivetrain, a 22-speed setup that offers unbelievably fast, push-button shifting. Matched to Cannondale's own Hollowgram SiSL2 crank, the competition will have no idea how you got so fast. And, total control is at your command with Shimano's XTR Race brakes. This epitome of XC continues with only the best: ENVE tubeless-ready carbon rims, Cannondale Lefty and Chris King hubs, and a selection of ENVE's finest cockpit components. It might look like a sleeper, don't worry though, your XC domination will do the talking.

Features & Info

Geometry Chart

BallisTec Hi-MOD carbon

Lefty Carbon XLR Fork

Hollowgram SISL2 crankset

System 29 geometry

27.5-inch/650B wheels

Pedals sold separately

Consumer Reviews

5.0 stars

(1 review)

100% of respondents would recommend this to a friend.


  • Easy To Use 
  • Lightweight 
  • Comfortable 
  • Durable 
  • Stylish 


Best Uses

  • Xc Racing 

May 11, 2015

This is the best bike i have ever ridden

Stylish, Comfortable, Easy To Use, Durable, Lightweight
Best Uses:
Xc Racing
The feel of the bike under you gives you confidence. It is vary light, smooth, stiff. The geometry of the bike just feels perfect to ride. It all most feels like cheating. The di2 is the smoothest most advanced ways to shift. Being able to program it to shift the way you want is vary exciting to have on a bike. This is the best XC race bike i have ever ridden!
by Brandon from Holland Landing, CA


Cannondale F-Si Asymmetric Ballistec HI-MOD carbon, w/SPEED SAVE stays, 1.5 Si headtube, 142 x 12mm thru-axle
Lefty 2.0 Carbon XLR 29, XLR XC Damper, 100mm-travel
ENVE carbon M50, tubeless ready, Ai offset rear lacing
Front: Lefty; Rear: Chris King
DT Swiss Aerolite
Schwalbe Racing Ralph Evo Snakeskin, 29/27.5 x 2.1, tubeless ready
Cannondale Hollowgram SiSL2, Ai
Bottom Bracket
Front Derailleur
Shimano XTR Di2
Rear Derailleur
Shimano XTR Di2
Rear Cogs
Shimano XTR, 11-speed: 11-40
Shimano XTR Di2
ENVE Carbon Sweep, flat, 740mm
Cannondale foam locking grips
Cannondale OPI adjustable, stem/steerer
Brake Levers
Shimano XTR Race, carbon lever
Shimano XTR Race disc, 160mm rotors
Fabric ALM, carbon base/carbon rail
ENVE carbon, Di2 compatible
Accessories & Extras
Di2 seatpost battery, Di2 charger