I bought this 5 yrs ago from a now defunct bike store. I've ridden this bike with no issues but at this point, I can't guarantee authenticity until I have it checked out.The item "2013 Cervelo S5 Carbon Road Bike 48cm SRAM Red Carbon C50 Wheelset" is in sale since Sunday, October 6, 2019. This item is in the category "Sporting Goods\Cycling\Bicycles". The seller is "chiron64" and is located in Beaverton, Oregon. This item can be shipped to United States.