First Look: FSA Unveils Wireless Drivetrain

By: Zap

One year following what was supposed to be its original unveiling, Full Speed Ahead finally unveiled  the electronic road bike drivetrain that we all knew was coming at least since last years Eurobike show.  After five years in the making, with two actual years of road testing to “get it right,” FSA’s WE (Wireless Electronic) drivetrain met a receptive audience for its first official public viewing during set-up day at the Eurobike show.

The drivetrain uses an ANT+ protocol and although touted as a “wireless” system, the WE drivetrain can be better described specifically as a half & half system. What that refers to is that the drivetrain system is wireless from the shift/brake levers, but there is a wire connected to each derailleur from the internally mounted seatpost battery. Although the presentation was on the brief side, some of the key points made to the room  of journos was the following:

* Total weight of the gruppo is a claimed 2090 grams.

* Consumer availability is scheduled for May 2017 and no price was disclosed.

* The entire KForce WE group consists of new levers, derailleurs, cassette and brakes.

Shifts on each lever are made via the two buttons located in a top and bottom position. Shift sequence can be customized via the WE app. Two different brake hoods were seen with the taller version (here) used vs a shorter version used in the disc brake spec’d bike. The shorter the better!

* One of the coolest features was the idea of  using two different brake lever sizes: standard and compact (the latter which is 6mm shorter). Though not talked about, we spotted two differently shaped brake hoods – apparently the final design is not set.

* The carbon KForce crank remains a hollow structure and will be available in six different lengths (160-180mm). The crank uses the BB386 bottom bracket which they helped develop.

The hollow carbon crank is an all new design. A 1x option is slated for future development.

* The front derailleur is considered the “brain: of the system. There are four different colored (Blue, green, yellow and red) lights to inform the rider on how much battery life remains. The derailleur uses a rack and pinion system for the mechanical movement and has an auto-trim feature. The system is charged through a port located in the rear derailleur.

* Coming attractions from FSA include a hydraulic disc brake, and a crank/ power meter combo.

FSA said that battery life for the drivetrain should be in the 2500 mile range.

* Three cassettes will be available: 11-25, 11-28, and 11-32. The clusters are made up of a combination of steel and titanium mix with a pair of multi-gear spiders in addition to the individual gears.

* For the 2017 racing season, team bikes from: Astana, Cofidis, Direct Energie, Dubai Skydive and the American based Jelly Belly squad. We were told that while the team training bikes will see 100% WE use,  they will be worked into the race bikes.

FSA is still developing their hydraulic disc brake and hope to roll it out sometime in the spring of 2017 when the WE drivetrain is also hope to go retail.


In a very brief parking lot test ride we found the front shifting to be quick and efficient. In back, other than a few mis-shifts on a small incline (with a slow front shift under load) the FSA parts delivered good performance. Time will tell, we’re looking forward to a real test ride in early 2017.

For more info: Full Speed Ahead


Get real time updates directly on you device, subscribe now.

Comments are closed.