50 X 34 Praxis rings, 172.5mm cranks. $2000 / best offer.
Praxis rings on it are new as of ~May 2013, and the SRM itself was serviced with new battery in July 2013, so it’s good to go for a long time (in other words, very low wear on the rings and not much run time on the battery). Parts used for installation in the PressFit 30 bottom bracket included.
You will need the SRM head unit or a Garmin or so on to get the power readings.