4iiii Precision LH Power Meter Shimano GRX NDS RX810 170mm

The 4iiii Precision LH Power Meter is an all-new concept from cycling disruptors 4iiii! They offer precision power meters pre-installed on the left-sided Shimano crank arm of your choice. Featuring 4iiii's patented Precision 3D Strain Gauge technology, three aspects of your pedal stroke are measured to provide you with the accurate data you've been dreaming of!

Before its release, the 4iiii Precision LH Power Meter was tested during extreme events: attacking the Alpe D'Huez in the Tour de France and delivering the precision needed during the Queen K Ironman World Championships. Not only does this mean you can trust the data, but you can use it to continuously improve your performance.

The 4iiii Precision LH Power Meter has been designed to be lightweight yet durable, only adding a minuscule 9g to the weight of the crank arm it's installed on. With both ANT+ and Bluetooth support, the Precision Power Meter can be paired to any modern smart head unit to provide you with the data you want when training or racing.

With the 4iiii Precision LH Power Meter, don't settle for second best, achieve your own yellow jersey!

Features

• 3D Strain Gauge Technology: Measures the tri-axial strain on your crank arm to consistently produce accurate data
• Compact Design: Durable and lightweight
• Compatible: ANT+ and Bluetooth mean you can connect to smartphones and smart head units
• Simple: Easy setup, use and maintenance
• Wireless: Upgrade without plugging into anything

Specifications

• Accuracy: +/- 1%
• Weight: 9g
• Water Resistance: IPX7, IPX5
• Battery: Replaceable CR2032, offering over 100 hours of use
• Battery Status: Indicated upon reaching 15% battery life

Compatibility

• Fits all bottom brackets with Shimano Hollowtech II interface
• To confirm the crank is compatible with your frame, please use the fit test found here

IN THE BOX

Once your ride-ready PRECISION Powermeter arrives, it just needs to be installed on your bike using the standard Shimano crank installation process.

Connect a head unit or computer, and you can start riding with power.

WARRANTY

Ridden through rain storms at Strade Bianche, mud filled cross country mountain bike races, and even tested amidst the salt spray of the ocean on Oracle Team USA's America's Cup competitors.
All 4iiii power meters are IPX7-rated for water immersion up to one meter and backed with an industry-leading 3-year warranty.