4iiii

Precision 3+ Power Meter Ultegra 8100

4iiii Precision 3+ Power Meter Ultegra 8100 brings next-level accuracy and connected performance to every ride. Designed for serious cyclists who demand reliable metrics and seamless integration, this lightweight power meter delivers pro-level data without adding bulk. With Find My support, it’s also the first power meter you can track right from your Apple devices—so you’ll always know where your bike is, even when you’re not riding.

Built around the trusted Ultegra 8100 crank arm, the Precision 3+ offers remarkable precision, efficiency, and durability. Whether you’re training for race day or fine-tuning your FTP, this power meter provides real-time watt, cadence, and calorie data with ±1% accuracy, helping you make every pedal stroke count.

• Apple Find My integration keeps your power meter—and your bike—easy to locate from any Apple device.
• Up to 800 hours of battery life with a simple CR2032 coin cell means more time riding and less time swapping batteries.
• Automatic terrain selector optimizes power readings whether you’re climbing, sprinting, or cruising.
• Lightweight 9g design adds virtually no weight to your setup.
• Dual connectivity with ANT+ and Bluetooth ensures compatibility with all major head units and training apps.
• Waterproof and built to perform in all conditions.
• Backed by a strong 3-year warranty for long-term peace of mind.

With its sleek, low-profile build and advanced connectivity, the 4iiii Precision 3+ Power Meter Ultegra 8100 gives riders the tools to train smarter, ride faster, and stay connected every mile.