If you’re looking to upgrade your road bike with a power metre crankset, choose this 4iiii Precision Pro Shimano Dura-Ace FC-R9200. As well as offering all the qualities of the chainrings and cranks from the Japanese brand’s top-of-the-range groupset, this crankset is fitted with a sensor to help you better manage your training sessions.

This crankset also features the Apple Find My chip, which activates the tracking feature when the bike is stationary. A real bonus for keeping an eye on your bike via the app on an iPhone, iPad or Apple Watch.

Please note that this power-meter crankset has been removed from a brand-new bike and has never been used.

Technical specifications:

- Crank length Shimano Dura-Ace FC-R9200: 172.5mm
- Chainrings: 52-36
- Weight: 9 grams per sensor
- Accuracy: -/+ 1%
- Battery type: CR2032 lithium-ion button cell
- Battery life: up to 800 hours
- Water resistance rating: IPx7
- Cadence range: 30–170 revolutions per minute
- Power range: 0–4,000 watts
- Operating temperature: 0–50 degrees
- Communication protocols: ANT+, Bluetooth