4iiii Innovations, Inc., is one of a handful of startups bringing more affordable power meters to market, and it looks like their the first of the bunch to make it to the top levels of our sport. This isn’t the first time we’ve featured 4iiii’s power meter. First spotted at 2014 Interbike and again at 2015 Sea Otter, the 4iiii’s power meter has made leaps in bounds during that time. The latest variant is now officially in the WorldTour, with several Ettix Quick-Step Specialized team bikes fitted with a version that measures both left-and-right power. Click on through for more details…
Complete with ANT+ and Bluetooth connectivity, the latest version weighs a claimed 25 grams, making it the lightest power meter option yet. The original left-side only version tips the scales at nine grams, and has been available for some time. Currently, 4iiii require the buyer to mail in their left side crankset, who then install the meter for $US 399.
According to the Ettix Quick-Step team mechanic we spoke with, the right-side meter mounts to the Dura-Ace crank spider with three bolts. Not counting the bolts holding the cover in place, we couldn’t see evidence of any fixing bolts, and speculate the device is bonded to the right-side of the crankset, much like the left-side.
The image above demonstrates a birds-eye view of the rear of right-side measuring device.
The left-side measurement device is vastly reduced in size, with a claimed battery life of over 100 hours, utilizing CR-2032 coin cell batteries.
Ettix Quick-Step is still in the early days of testing with 4iiii’s new dual-sided power meter, with availability and pricing still an unknown.
Photos and article by Gravel Cyclist.
Jayson O’Mahoney is the Gravel Cyclist: A website about the Gravel Cycling Experience.