FS: XC Trek bike with Ultegra Di2 and Quarq Powermeter

I have for sale a Custom built 2012 Trek Ion XC Aluminum Pro Frame Gary Fisher collection- 56 cmUltegra Di2 10 speed and 2013 Sram Quarq 46/38 rings with 12/30 cassette TRP CX9 Brakes
*This frame does have one drill hole in down tube to accommodate the Di2- done at buildup at local bike shop
Selling for $2100 plus shipping
Everything works great!
http://i61.tinypic.com/14c5k6t.jpg

http://i57.tinypic.com/15ei69h.jpghttp://i62.tinypic.com/f23cqp.jpghttp://i57.tinypic.com/359iwdk.jpghttp://i58.tinypic.com/2gy0m79.jpghttp://i61.tinypic.com/14c5k6t.jpg

Do you know what the crank length is on the Quarq?