Constructed of ultra light and strong T6 aluminum alloy. Light weight, never rust(ISO 9001,14001).This 25.4 mm suspension seatpost is designed to absorb the shocks from the road suck as hitting a pothole ,it is not for making the ride like sitting on a limousine ,If you need more able riding,please consider advanced remoted control or hydraulic seat post
Seat Post Size: 25.4mm ,Length :350mm , no adapter , real outer diameter
Damping:Coil Spring ,Rail Width:44mm ,Offset:10mm ,Travel:40mm,Length above min insertion line: 250mm
Weight: approx 502g(25.4mm)
How to Choose the Size(3 choices):(1) Check the Original Seatpost Size Marked on the body ,choose the same size as the original one.(2) Measure the inside diameter of the frame tube(normally it is not accurate, considering Operator,measuring tool , Temperature,etc.,).(3) Inquire the bike frame seller to get the further information