Cannondale F-Si Carbon 29 action

The new Cannondale F-Si Carbon 29 was designed with the racer in mind.

Cannondale has announced the launch of the all-new 2015 F-Si Carbon 29. Based off the successful Cannondale F29, the F-Si sets the bar higher for a stiffer and lighter platform.

"While we pride ourselves in building the most cutting edge frames in cycling, our real advantage is in our System Integration approach to bike design," said Bob Burbank, Global General Manager, Cannondale. "The 2015 F-Si is for those XC Racers and hardtail purists who are seeking next level handling, speed and efficiency."

The Cannondale F-Si 29 Carbon sports the shortest chainstays in the XC 29 category.

The Cannondale F-Si 29 Carbon sports a super short chainstays of 429 millimeters.

The F-Si improves upon its predecessor's climbing and descending performance. With World Cup XC courses becoming more technical, the new bike needed to be more adept at super technical descents. Although these races can be lost on the descent, they are most often won on the climbs. Races are shorter with out-of-the-saddle climbing, and it was essential that the bike made the most of power output. Keeping all this in mind, Cannondale utilized System Integration and revamped frame geometry to deliver better handling, increased traction and speed.

Cannondale F-Si Carbon 29 head angle

With a slack head tube angle for a race bike, the Cannondale F-Si descends like a champ.

With a slack head tube angle for race bike of 69.5 degrees, the bike is able to handle rough, technical terrain at high speeds. In the tight, technical sections, the super short chainstays (429 millimeters) helps the rider navigate better at low speeds and puts more weight directly over the rear wheel, resulting in better traction. The wheelbase is 43.2 inches (109.7 cm) on the medium frame and the bottom bracket stands at 12.1 inches (30.8 cm) across all frame sizes. The F-Si 29 Carbon sports quick releases, external cable routing and has been designed to supported the recently debuted Shimano Di2 electronic system. The bike will come in four packages: F-Si 29 Carbon Black Inc., F-Si 29 Carbon Team, F-Si 29 Carbon 1 and F-Si 29 Carbon 2.

The Cannondale F-Si Carbon 29 Team

The Cannondale F-Si Carbon 29 Team

Rather than be limited to off-the-shelf standards, Cannondale has applied its System Integration approach to bike design, which develops component technologies and frames as a complete package. The Cannondale F-Si is no different, as it has been designed with key innovative technologies such as: the new Lefty 2.0, the SAVE 2 seat and new System 29 Geometry. The bike's Asymmetric Integration drivetrain has been moved 6 millimeters outward via a new Hollowgram spider to alleviate any clearance issues due to the new chainstays and is matched by an all-new offset rear end. This means a stiffer, more durable rear wheel as well, as a more agile bike without compromises.

It’s all in the carbon. The team at Cannondale used their Speed Save technology to reduce the amount of shock and vibration, which they say helps cut down fatigue and improves overall handling of the bike. The carbon is layered using BallisTec Carbon, which was originally created by the military for ballistic armoring, and uses resins found in carbon baseball bats. The result, according to Cannondale, is one of the lightest, stiffest and toughest frames out there.

See the bike in action:

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