Made of High quality 6061 aluminium alloy.Light weight,never rust.Strength: 4.9 levels ultra high strength, maxium of 580lbs.
Only fit for Seat Post Diameter:30.8mm or 30.9mm.Length:350mm.Setback: 20mm. Adjust tube length of 0 to 320mm.To choose the correct seatpost size, please measure inside diameter of the frame before you buy it.
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.
With adjustable head, convenient to install.
Suitable for most mountain bikes, road bike, fixed gear bicycle, downhill bike, track bike, MTB, BMX, DH, etc