
Power data is a must-have for us for training. It's more accurate than heart rate and is a very powerful training tool. We love our 4iiii crank-based power meters because they're light and accurate and connect to any ANT+ or Bluetooth-enabled cycling computer (which is most of them). If you want to save a good bit, do the Factory Install where you send in your existing crank arm and have them add the power meter.

We absolutely LOVE Shimano's new wireless Di2 XTR drivetr... more