Features:<br />Aluminum alloy material,lightweight and durable.<br />Hydraulic and air pressure cartidge ensure fast and smooth raise.But you need to press down the seat to get the lowest point by labor.<br />Wire controlled height adjustment meets your different needs.<br />Compatible with internal routing remote control only. (control switch at the bottom).<br />Come with a set of wire control components.<br />Easy to tailor the cable length as you need. Cable length: 1600mm/5.2ft.<br />Only suitable for most mountain bikes with the handle diameter: 22.2mm.<br/>Specification:<br />Outside Diameter: 30.9mm / 31.6mm (optional)<br />Max. length: 345mm / 395mm (optional)<br />Model: KS EXA 900i<br />Type: Wire Controlled Hydraulic Seatpost with Internal Routing<br />Material: Aluminum alloy<br />Fits handle: 22.2 mm<br />Seatpost weight: approx. 474 - 615 g / 16.7 - 21.7 oz<br />Cable length: 1600mm / 5.2ft<br />Package weight: approx. 527 - 668.4 g / 18.6 - 23.6 oz<br/>Package List:<br />1* Wire Controlled Hydraulic Seatpost<br />1* Set Of Wire Control Component<br/>NOTE: Check the size of your original seatpost,choose the same size as the original diameter before ordering.