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Whether you’re prepping for a local Gran Fondo or aiming for a new FTP personal best
Replacement PRECISION Powermeter cap and O-ring
it is built to handle everything from rough terrain and gravel to high RPM sprints
you send us your compatible crankset
allowing you to track your bike’s location with ease
4iiii PRECISION 3+ PRO Dual-Sided Powermeter - Factory Install Select Your Crank Model:Shimano - Ultegra FC-08 Whether you’re prepping for aThe 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