Installation of the 105 5800 Power Meter is just a matter of replacing your existing left side crankarm with the Stages equipped version. Simply remove your left crank arm, and install the Stages arm. No magnets, zipties sensors or additional hardware required. Done. The head unit pairing and Zero calibration tasks are just as simple. The Stages unit is equipped with an accelerometer that tracks crank position during rotation to calculate cadence. It sends the cadence and power information to your connected devices. Truly simple. The Stages self-contained pod means that from installation of the power meter to riding generally takes about 10 minutes. Install, pair the power meter to a compatible head unit, Zero calibrate, go ride. Easy. Stages even provides excellent instructions and support through their website. Accessible.

It is crucial for accurate training and analysis that the meter be consistent to itself, that the rider can quickly and easily set Zero calibration at the start of every ride, and that temperature is always accounted for. As Stages constantly corrects for temperature, accuracy is much better over many of it's competitors (whose units don't auto correct, or do so with far less frequency) whenever there is a significant change in temperature during your ride. Temperature can seriously affect the strain gage systems used to measure power, to the point where a long climb in the mountains during which weather and temperatures can greatly fluctuate, uncorrected data is nearly worthless.

In this model, Stages bonds the actual power measurement pod onto a new Shimano 105 5800 left side crank arm. The location on the arm is crucial, as the arm and pod then tested and calibrated together to ensure that the strain gages and sensors are working optimally with the specific crank arm. The pod itself is made of an incredibly strong polycarbonate blend that is similar material to that used in bulletproof glass. This material is perfect due to its light weight, superior durability and impact protection. Additionally, the Stages Power meter is highly sealed against environmental conditions, and carries an IPX7 water resistance rating, which means it can be submerged in water up to 1 meter for a maximum of 30 minutes. We highly recommend you never pressure wash near the bottom bracket/ crank assembly anyway, so if you follow that standard, you won't be pressure washing your Stages Power Meter anyway.

It was crucial to Stages to make their power meter efficient, as well as keep their firmware updated. This version of the Stages Power Meter is their Gen2 pod, which is more streamlined than the original model (allowing for more crank arm and frame compatibility). The battery compartment and door were improved and strengthened. It is easy to change the battery, a coin-style, readily available CR2032 model. Each CR2032 delivers 200+ hours of power to the unit. The StagesPOWER App also keeps track of the battery level, so you can be prepared. Firmware is updated via this smartphone app as well. Stages regularly advances their firmware and app to reflect new features and updates. The app is user friendly and will become your best friend as you manage your power meter, allowing for direct updates to Training Peaks, Strava, Garmin Training Center and other cloud-based training systems. Now anyone can ride with power. Ready?