4iiii is a Canadian company based in Cochrane, Alberta, founded by Jim Rooney and Kip Fyfe in 2010. Jim and Kip were the founders of Dynastream, the company that created the ANT+ wireless technology that most cyclists are familiar with. In 2006, Garmin acquired Dynastream for $36 million in cash.
In recent years, 4iiii power meters have been used by World Tour teams such as Etixx-Quick Step, Bora Hansgrohe, and Israel Startup Nation.
Today, 4iiii is one of the leading power meter manufacturers. 4iiii makes the left and dual-sided power meter for Shimano crankarms (road, gravel, and mountain bike).
In this article, we’ll look at the differences between two of the most popular models; 4iiii Precision vs Precision 3.
At first glance, both 4iiii Precision 3 and Precision looks very similar.
Here are the improvements made with the 4iiii Precision 3;
|Battery life||800 hours||100 hours|
|Cadence||30 – 170 rpm||30 – 150 rpm|
4iiii Precision 3 and Precision are available for Shimano 11-speed groupsets (105, Ultegra, and Dura Ace), GRX and XT/XTR.
At the moment, there is no model available for 12-speed Shimano road groupset.
|Shimano crankarm||Crankarm length|
|Shimano 105 R7000||165, 170, 172.5, 175mm|
|Shimano Ultegra R8000||165, 170, 172.5, 175mm|
|Shimano Dura Ace R9100||165, 170, 172.5, 175mm|
|Shimano GRX810||170, 172.5, 175mm|
|Shimano XT M8100||170, 175mm|
|Shimano XTR M9100||170, 175mm|
More reading : Which Power Meter Fits A Shimano Crankset?
Where to buy
The table below shows the recommended retail pricing (RRP) of each 4iiii model.
|Shimano crankarm||Precision 3 (USD)||Precision (USD)|
|Shimano 105 R7000||$335||$285|
|Shimano Ultegra R8000||$385||$335|
|Shimano Dura Ace R9100||$490||$440|
|Shimano XT M8100||$385||$335|
|Shimano XTR M9100||$515||$465|