4iiii PRECISION 3+ PRO Dual-Sided Powermeter - Factory Install Select Your Crank Model:Shimano - Ultegra FC-08 Note: If your current left-side

Note: If your current left-side power meter is a PRECISION 3 (non-Find My)

you send us your compatible crankset

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

the PRECISION 3+ PRO Powermeter provides the most detailed insight into your riding

and lightweight design

4iiii PRECISION 3+ PRO Dual-Sided Powermeter - Factory Install Select Your Crank Model:Shimano - Ultegra FC-08 Note: If your current left-sideThe 4iiii PRECISION 3+ PRO Powermeter is our most advanced power meter, offering the ultimate combination of dual sided 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 looking to analyze left right balance to optimize your pedal stroke, this dual sided crank based power meter provides the comprehensive data you need to unlock your