XLC - Made by Tranz-X! Suspension Alloy Seatpost 27.2 Black. XLC -Made by Tranz-X Suspension Alloy Seatpost 27.2 Black. Constructed with light weight 6061 T6 Aluminium Alloy. 2 Bolt Clamp with Ajustable Angle. 45mm of Travel ! 27.2 x 350mm Black. Made by Tranz-X