4iiii Precision Pro Dual Power Meter + Shimano Dura-Ace R9100 Crankset
Ridden by the pros, PRECISION PRO dual-side power meters deliver all the benefits of our left-side model (exceptional accuracy, lightweight design, ANT+ and Bluetooth compatibility, 3D powermeter technology), plus a specific breakdown of left and right wattage. Perfect for those who need specific power output from each crank side, or anyone who simply wants the best power meter on the market.
The PRECISION PRO Ride Ready comes pre-installed on a new Shimano DURA-ACE FC-9100 series crankset.
Data accuracy: +/- 1% error margin
Battery life: 100+ riding hours on 2032 coin cell battery
Battery status indicator: Alert at 15% battery power
3D powermeter technology (patent pending) measures tri-axial strain on your crank arm
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
Mfr Claimed Weight
25g (power meter only)
Praxis Works Zayante M30 Crankset + 4iiii Precision Left-Only Power Meter