Crank Arm Power Meters for Road Overview
This page contains our crank arm power meters for road bikes. Along with pedals, crank arm-based power meters are one of the most popular power meter types. They are affordable and easy to install. In addition, you can find a crank arm power meter to fit virtually any crankset.
Additional Information:
Brands
We carry crank-arm based power meters from 4iiii Innovations, Stages Cycling and Pioneer.
Options
All three of these companies make left crank arms (the power meters on this page), as well as complete cranksets that measure both left and right leg power. The complete cranksets can be found on our Cranksets page.
Important Notes
Before purchasing, you should confirm compatibly with your bike frame. The power sensor that is attached to the inside of crank arm needs approximately 10 mm of room to clear the chainstay as you rotate the cranks. See the image below.
Quick Product Comparison:
Price
While these companies make many different models, in general, the 4iiii power meters are priced below the others. The Pioneer units are usually the next most affordable, followed by Stages.
Installation
All of these power meters install the same way. You simply remove your current, left-side crank arm power meter and replace it with your new, power-equipped version. Installation typically takes about 5-10 minutes for most models. Note that for Shimano models, you will also need a Shimano Hollowtech II crank arm cap tool (costs about $5.)
Power Measurement
All of these left side crank arm road power meters measure power from the left leg and double the value in order to calculate total power.
ANT+/Bluetooth SMART
All of these power meters are dual ANT+ and Bluetooth SMART compatible.
Batteries
All of these power meter run off of CR2032 batteries. Note that with the 4iiii, you also have the choice of a rechargeable battery with their Podium models.
Weight
Crank arm power meters for road bikes are one of the lightest power meters you can buy. The 4iiii adds a mere 7.5-9 grams (based on the model) to your bike. The Stages adds 20 grams and the Pioneer adds 22 grams.
One of the most accurate, lightweight and affordable power meters available!
4iiii's PRECISION power meter combined with Shimano’s Ultegra R8000 groupset
The 4iiii PRECISION is now available in Shimano’s latest evolution of the FC-R9100!
4iiii's PRECISION power meter combined with Shimano’s GRX RX810 groupset
4iiii power on a Shimano GRX RX810 right side crank arm!
Stages Cycling performance on Shimano's best-selling R8000 crank arm
Bringing Stages power to carbon FSA 386 EVO cranks!
Stages Carbon for SRAM BB30 Power Meter
$539.99 – $614.98Made specifically to work with SRAM, Easton and Race Face cranksets
The Stages Shimano 105 R7000 offers Stages performance at a great value!
4iiii PRECISION Factory Install
$299.99Convert your current crankset into a 4iiii power meter!
Convert your current ride side crank arm into a 4iiii power meter!
Made specifically to work with SRAM GXP road cranks
Stages power for your Cannondale Hollowgram Si crank!
Stages FSA SL-K BB30 Power Meter
$539.99Award winning Stages power for FSA and Vision BB30 cranks- The Stages Shimano GRX RX810 brings Stages power to your gravel bike!
The Stages Shimano DA 9100 Power Meter brings Stages power to Shimano's newest 9100 series crank arm- Stages power on a Campagnolo Record 12S crank arm!
Stages power on Campagnolo's top of the line Super Record crank arm!
