This high-quality road bike seatpost is developed as a direct replacement for the original model that came on your Vitus ZX-1 Evo bike. It features a sleek carbon build, which gives it fantastic strength, durability as well as an overall low weight on your ride. Available in three different size options to select, should you require a shorter total length (bikes are supplied with 400mm, 350mm and 300mm length seatposts) please see the Vitusbikes.com tech documents pages for a guide on how to shorten the length of this seatpost. Manufacturer's Part Numbers: SP-VT02-300 Black 300mm  SP-VT02-350 Black 350mm  SP-VT02-400 Black 400mm