Sram Rival crank arm power meter

The Stages option is one of the newest in the power meter market. It created a storm when it first came out a couple of years ago, as it offers everything the casual cyclist needs in a power meter. Many racers use it as well.
It is very light, adding only 20 grams to the crank arm, it’s easy to install and swap from one bike to another, and it’s affordable.
The Stages products are ANT+ and Bluetooth Smart ready, meaning they can be paired with most cycling computers, like Garmin.
If you’re looking to improve your cycling performance, whether you’re a triathlete, a racer or a weekend warrior, the Stages power meter is a very powerful tool.