What length are the cranks, looks like 177.5mm to me?

yes cranks are 177.5 rings are praxis forged 52/39 130 bcd

I have had some people ask if I will sell just the SRM because they don't want the longer crank arms and the answer is yes!

I will sell just the SRM(no rings, no cranks) for $1050 shipped

The SRM with no rings/no cranks is how SRM sells it on their site and the price is $2045 so steal this one for 1k less...

https://shop.srm.de/...alized-Standard.html

With the SRM do you have to purchase the SRM head unit? Or is it compatible with Garmin head unit as an example?

you can use a garmin...I did it's ant+ compatible and I much preferred the garmin with the gps

Pm sent, I will buy the powermeter spider only

invoice sent!

sold