Originally Posted by dieselrover

It's replacing a Force 22 50/34 so sadly I couldn't keep the arms, but the rings are perfectly swappable. Went out yesterday once they were on to just see some data coming in. Returned 30 minutes later drenched in sweat with a 20 minute normalized power of 325w (translates to 308 FTP I guess). I wasn't planning on doing an FTP test, and certainly wasn't expecting anything over 250. I'm sure I'd have been fine without it, but it sure does change your perspective on training.