Discover the best power meter brands, such as 4iiii, at Escapa. The 4iiii Precision Left Shimano RX810 172.5MM Power Meter has been used to manage attacks on Alpe d’Huez during the Tour de France and to conquer the Queen K during the Ironman World Championships, delivering industry-leading precision and reliability when you need it most. Thanks to our patented 3D Strain Gauge technology, you can be sure you’ll have the data you need to earn your own Yellow Jersey.
With its lightweight, durable design—compatible with ANT+ and Bluetooth Smart headsets—PRECISION will let you train harder and smarter.
PRECISION Ride Ready is included and comes pre-installed on the new Shimano crank arm of your choice. These cranks are mounted to the bottom brackets via a Hollowtech II connection.
We offer factory-preinstalled, ride-ready PRECISION units on new Shimano cranks. As soon as you place your order, our team will ship it to you, and you can start using the power meter as soon as it arrives.
4iiii’s PRECISION power meters use both the ANT+ PWR and Bluetooth Smart Cycling Power Service standards, making them compatible with almost any headset, smartphone, or computer you want to connect to. Check your device’s documentation for its ANT+ PWR or Bluetooth Smart (also known as BLE, BTLE, or BT4.0) capabilities.
When you apply force to your pedals or crank, the crank not only bends but also twists and flexes in all three dimensions. 4iiii’s patented 3D power measurement system measures this multidimensional stress, so you can be sure that your unique pedaling stroke is measured accurately, regardless of riding conditions.
Device weight: 9 g
Power range: 0–4000 W
Cadence range: 30–150 RPM
Communication protocols: ANT+, Bluetooth Smart
Operating temperature: 0 to 50 °C
Storage temperature: -20 to 50 °C
Battery type: Pilo CR2032 lithium button cell
Battery life: +100 hours
Water resistance rating: IPX7, IPX5
Length 37.7 mm
Width 27.6 mm
Depth 7.5 mm
