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.
NOTE: check your frame clearance before ordering by downloading and printing the compatibility guide:
Letter size paper (pdf) | A4 size paper (pdf)
Orders shipped outside of Canada and USA are subject to VAT and Duty.
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
Resources
Software & Documentation
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How does it work?
Choose the Shimano left crank arm you want at checkout, and you’ll receive it with PRECISION installed.
Display Compatibility
Android Apps
- CateEye Cycling
- Endomondo
- Strava
- Wahoo Fitness: Workout Tracker
- plus other apps supporting Bluetooth Smart/LE bike power devices
CATEYE
- Stealth evo+
- Stealth 50
- Strada Smart
- Padrone Smart
- Padrone Smart+
Garmin
- Edge 500
- Edge 510
- Edge 520
- Edge 800
- Edge 810
- Edge 820
- Edge 1000
- Edge Explore 1000
- epix
- Forerunner 310XT
- Forerunner 910XT
- Forerunner 920XT
- fenix 2
- fenix 3
- fenix 3 HR
Polar
Please note: the Polar V650 is not compatible
Suunto
iOS Apps
- CatEye Cycling
- Endomondo
- Strava
- TrainerRoad
- Wahoo Fitness: Workout Tracker
- plus other apps supporting Bluetooth Smart/LE bike power devices
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