2017 Quintana Roo PRSix Ultegra Orange / Black Size 56 cm Excellent condition Full carbon fiber frame, seat post and SHIFT+ technology aero bars and boat Tail airfoils. I hate parting with this incredible piece of technological equipment! But, I sell my PRSix because of knee issues. I 'd wish to keep running and racing but my desire to continue is hindered by the race. Since buying my QR, I have done a Half Ironman (70.3) and a couple of smaller breeds. This bike is in pristine condition! It has worked in my garage and has been kept clean for ever. It's pretty, pretty easy and ready to run!