Round Seat Cap

##Trek Round Seat Cap 20mm Offset The revolutionary Trek Ride Tuned seatmast that is seen on the majority of their latest frames (Domane, Boone and Madone) requires the Trek Round Seat Cap 20mm Offset to make the most of it. This seat cap is available in two lengths, either 135 mm or 175 mm so that a fit can be achieved for all riders. Fantastically, it is also available in either white or black so that these can be colour matched to any frame.