Used to pace attacks up the Alpe D’Huez in the Tour de France and to hammer on the Queen K during the Ironman World Championships, the PRECISION Powermeter delivers industry leading accuracy and reliability when you need it most. Through our patented 3D Strain Gauge technology, you can be assured that the data you depend on will help lead you to your own Yellow Jersey.
Packaged into a durable lightweight design and compatible with ANT+ and Bluetooth Smart head units, PRECISION will help you train harder and smarter.
The Factory Install PRECISION gives you the flexibility of having a 4iiii Powermeter installed onto a NDS crank you supply. To learn more about this process see below.
Installed Locally in the UK.
Through our custom install process, PRECISION can be installed on a variety of crank arms. We’ll work with you to determine the best fit for your bike frame. Once you place your order, you’ll then send us your left crank arm, we install a PRECISION left-side powermeter on it, and we ship it back to you.
Important: You need to use the frame clearance pages below to ensure there is space between your crank and frame for the PRECISION pods.
Frame/Bike Compatibility
Because 4iiii PRECISION powermeters are mounted on the inside of your crank, there needs to be enough space between your crank and the frame for the pod to fit. Print and use the clearance guides below to check your frame.
Communication Compatibility
4iiii PRECISION power meters use both the ANT+ PWR and Bluetooth Smart Cycling Power Service standards, which makes them compatible with nearly every headunit, smartphone, or computer you wish to connect to. Check your recording device documentation for ANT+ PWR or Bluetooth Smart (also called BLE, BTLE, or BT4.0) Cycling Power Service capability.
Crank Compatibility
A 4iiii PRECISION powermeter is currently available on the NDS of any of the crankset configurations listed below.
Shimano - 105 FC-5700
Shimano - 105 FC-5800
Shimano - 105 FC-R7000
Shimano - Ultegra FC-6700
Shimano - Ultegra FC-6800
Shimano - Ultegra FC-R8000
Shimano - Dura-Ace FC-9000
Shimano - Dura-Ace FC-R9100
Shimano - GRX FC-RX810
Module Weight - 9g (0.3oz)
Power Range - 0-4000W
Cadence Range - 30-150RPM
Communication Protocols - ANT+, Bluetooth
Operating Temperature - 0 to 50°C (32-122°F)
Storage Temperature - -20 to 50°C (4-122°F)
Battery Type - CR2032 lithium ion coin cell
Battery Life - 100+ hours
Waterproof Rating - IPX7, IPX5
Length - 37.7mm (1.5in)
Width - 27.6mm (1.1in)
Depth - 7.5mm (0.3in)