Simple mechanical spring design using a standard bike cable Dead reliable last forever I've sold a bike so this one's up for sale You can use a shim to fit wider seat tubes Works perfectly very little use as have too many bikes - Adjustable Seatpost by Wire - Adjust Lever with Clamp to be Fixed in Handlebar - Outer diameter: 27.2mm - Length : 400mm - Material: Cr-mo Steel Axle Tube / Alloy 6061 Outside Tube - Travel: 0 / 45mm / 90mm ( 3 Positions ) - Black Anodized ( as pic. shown) - With Rubber Boot to Prevent Dust - Weight: Approx. 570
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