Erina Heights, NSW Australia 2260

©2017 by Mick Curran Coaching. Proudly created with


SKU: 364215375135191

This Precision Ride Ready unit comes already installed on a new Shimano left crank arm. These crank arms will fit bottom brackets using the Hollowtech ii interface.


This is the much-anticipated combination of the pros-choice Precision Powermeter and Shimano’s lightweight R8000 crankset. The ULTEGRA R8000 shaves a full 7 grams off its predecessor. At just 9 grams, the totally waterproof Precision is the world’s lightest powermeter.

4iiii went about designing this product when they saw how many customers were sending in their Shimano ULTEGRA R8000 crank to have the Precision Powermeter installed. This product gets you riding and measuring your power sooner, and doesn’t put your bike out of action whilst waiting for your crank to be altered. This product is the left side crank with a Precision Powermeter installed, Ride Ready so it can be installed immediately and you can get back to training or racing sooner. 

This is the lightest and lowest cost left side powermeter on the market for the Shimano ULTEGRA R8000. White-capped 4iiii Precision PRO Powermeters distinguish podium-dominating World Tour teams Quick-Step Floors and Bora-hansgrohe at the Tour de France. 4iiii Precision technology is the same technology, but in an affordable single-side version.

Regardless whether you’re a pro or simply training super hard, Precision power meters deliver industry-leading accuracy, super dependable cadence data, 3D power meter technology capable of measuring tri-axial strain on your crank arm. Designed in-house to be both durable and lightweight, and compatible with ANT+ and Bluetooth head units, train harder and smarter with Precision. 

  • Features


    • Suits Shimano Ultegra R8000 cranks
    • 3D power meter technology (patent pending) measures tri-axial strain on your crank arm
    • Extremely accurate and 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

  • Compatibility


    Display Compatibility
    Android Apps
    • CateEye Cycling
    • Endomondo
    • Strava
    • Wahoo Fitness: Workout Tracker
    • plus other apps supporting Bluetooth Smart/LE bike power devices
    • Stealth evo+
    • Stealth 50
    • Strada Smart
    • Padrone Smart
    • Padrone Smart+
    • 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
    • M450
    • V800 BTLE
    • Please note: the Polar V650 is not compatible 
    • Ambit3 Sport (Bluetooth)
    iOS Apps
    • CatEye Cycling
    • Endomondo
    • Strava
    • TrainerRoad
    • Wahoo Fitness: Workout Tracker
    • plus other apps supporting Bluetooth Smart/LE bike power devices

$780.00 Regular Price
$720.00Sale Price