GT Carbon Sensor Expert Medium for sale. This bike used to be bought new in October of 2016 and still has the original tires on it.1 x 11 drivetrain, seatpost dropper by rockshok. It cost $3,000 when it used to be new and used to be a pretty good deal on the time. I’ve the original receipt if you have an interest. Take a look at the reviews in this bike as it used to be rated pretty good. Everyth8ing works great on bike and it in point of fact needs nothing. The seat is cosmetically damaged and that’s the reason about all. I in point of fact hate to sell it and particularly for this price but I’m moving abroad.