Up for sale is my trusty wireless Shimano SRM Power Meter Dura Ace Crankset with 172.5mm arms. I have owned it 10yr+ and it has been rock solid perfect everytime. I have sent it back to SRM twice for fresh batteries and it is the most accurate and reliable powermeter I have owned. (Stable offset and zero too) I have been hanging on to it for a future use, but priorities shifted. Has 50/38 chainrings but I will include the 53/39 too. Can meet in KC or ship at buyers expense. $250 obo