The 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 potential.

Elevate your riding experience with dual-sided power for our most advanced features and an in-depth look at your data. With left/right balance, pedal smoothness, and torque effectiveness, the PRECISION 3+ PRO Powermeter provides the most detailed insight into your riding. Built to handle everything from rough terrain and gravel to high RPM sprints, it features Apple Find My technology, automatic terrain selection, and an industry-leading 550-hour battery life.

With the Factory Install process, you send us your compatible crankset, we install the dual-sided power meter, and then ship it back to you. Backed by our 3-year warranty and an IPX7 waterproof rating, the PRECISION 3+ PRO is your dedicated performance tool for years to come.

BONUS: FREE TRAINING WITH JOIN CYCLING Every 4iiii power meter purchase includes 8 weeks of free premium training on the JOIN Cycling App. Whether you’re prepping for a local Gran Fondo or aiming for a new FTP personal best, JOIN provides flexible, adaptive training plans that sync perfectly with your new PRECISION 3+ data.