4iiii PRECISION 3+ Left-Side Powermeter - Factory Install Compatible Left Crank:Shimano - Dura-Ace FC-09 this crank-based power meter provides

this crank-based power meter provides the consistent data you need to unlock your potential

The Viiiiva is a reliable cornerstone of your training toolkit

Whether you’re pushing through a high-intensity workout

it is built to withstand the elements and your highest-intensity efforts

With the Factory Install Dual Upgrade

4iiii PRECISION 3+ Left-Side Powermeter - Factory Install Compatible Left Crank:Shimano - Dura-Ace FC-09 this crank-based power meter providesThe 4iiii PRECISION 3+ Powermeter is the ultimate combination of accuracy, durability, and lightweight design. Whether you are a Tour de France pro, a Mountain Bike World Champion, Ironman triathlete, a Zwift racer, or a cyclist simply looking to add the structure of data to your training, this crank based power meter provides the consistent data you need to unlock your potential. Engineered to be the best affordable power meter on the market, the