rase black mamba rapid adjust seat post   Rase Black Mamba Rapid Adjust Seat Post

The Black Mamaba Rapid Adjust seat post, from Rase, lowers and raises the seat for you with nothing more than the pull of a mini-lever. The seat automatically raises or lowers up to nine inches for you on the fly! The shaft itself is supported by a small diameter coil spring which extends when you lower the post. There are 20 individually drilled stops, which are locked into place by a sprung pin. You can purchase the Rase Black Mamba Rapid Adjust seat post at Rase Bike for $349.

Via BikeRadar.