BOLANY Bike Seat Posts Bike Suspension Seatpost 27.2 31.6 Alumium Adjustable Seatpost for MTB Road Bike Mountain Bike Fixed Bike Seatpost (Black-Black, 27.2mm)

Bike Suspension Seatpost  Material: Aerospace 6061 Aluminum Alloy Diameter : 27.2mm,31.6mm(real outder diameter ,no adapter) Length: 350mm Damping:Coil Spring Travel: 40mm adjustable preload suspension travel. offset :14mm With adjustable head, convenient to install. Standard clamp with 2-Bolt Zero Offset head clamp safety How to Choose the Size: 1.Check the diameter of the original seatpost,choose the same size as the original diameter. 2.Measure the inside diameter of the frame tube Package: Mountain bike bicycle suspension seat tube *1