I have recently went to shorter cranks so im selling my Rotor 3D Aero Cranks. They are 130BCD and 170MM in length. Also included are the 53/39 Aero Q-Rings and Rotors Self Aligning Bottom Bracket with ceramic bearings. Everything that is included with this post retails for $910 on www.rotorbikeusa.com. This setup came off my 2013 Cervelo P2. Used for 1 season. $500 plus shipping in the conus. Feel free to ask me any questions at rileyinbend@gmail.com