The 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 PRECISION 3+ features Apple Find My technology, allowing you to track your bike’s location with ease. With +/-1% accuracy, automatic terrain selection, and an industry-leading 800-hour battery life, it is built to handle everything from rough terrain and gravel to high RPM sprints.

With the Factory Install process, you send us your compatible crank arm, we install the power meter, and then ship it back to you. Backed by our 3-year warranty and an IPX7 waterproof rating, the PRECISION 3+ 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.