Left crank arm with 4iiii Precision 3.0+ Ultegra R8100 power meter - 165

The left crank arm with 4iiii Precision 3.0+ Ultegra R8100 power meter is the most powerful unit to date, compressed into a smaller and lighter package and compatible with Apple Find My. The Precision 3.0+ power meter is a proven choice for professionals and weekend warriors alike. Whether you're fighting for a ranking spot in Kona, logging countless hours on virtual cycling platforms, or looking to improve your time on the local KOM segment, you want accurate and reliable tools to unlock your potential. With up to 800 hours of battery life, an auto-terrain selector, +/-1% accuracy, and backed by 4iii's industry-leading 3-year warranty, the Precision 3.0+ Powermeter will be your trusted tool for years to come.The Precision 3.0+ Powermeter is much more than a power meter. It is your training companion that offers you peace of mind. As you pedal, your Precision 3.0+ Powermeter will transmit watts, cadence, and calories to the main unit of your choice.