4iiii - Left Side Precision Power Meter

4iiii - PRECISION POWER METER

Whether you’re a pro or simply training hard, PRECISION powermeters deliver industry-leading accuracy, highly dependable cadence data, 3D powermeter technology capable of measuring tri-axial strain on your crank arm. Designed to be durable and lightweight, compatible with  ANT+ and Bluetooth head units, PRECISION helps you train harder and smarter.

PRECISION Ride Ready comes installed on a new Shimano left crank arm (105, Ultegra, or Dura-Ace). These crank arms will fit bottom brackets using the Hollowtech ii interface.

Features

• 3D powermeter technology (patent pending) measures tri-axial strain on your crank arm
• Accurate, consistent data
• Lightweight, compact design
• Battery status indicator via 4iiii app
• Compatible with ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products
• User-friendly app and configurable rider compensation scale factor
• Easy setup and maintenance

Specifications

• Weight: 9 grams
• Data accuracy: +/- 1% error margin
• Battery life: 100+ riding hours on 2032 coin cell battery

How does it work?

Choose the  Shimano left crank arm you want at checkout, and you’ll receive it with PRECISION installed.

For Display Compatibility Click here

For Service and Software Documents Click Here