New 2017 Model!

Leap frogging off the original Pivotal seat system, the Stealth system offers a way to install your seat without fishing an allen key through the top patch. With the Stealth system, the need for a patch and slot on the seat is eliminated and the anchoring seat bolt can be threaded from the bottom using a Stealth seat post. Kink Stealth seat posts are made from a single 3D forged piece of 6061-T6 aluminum

A stealth pivotal seatpost is needed for all stealth pivotal seats. But you can also use standard pivotal seats with this post - it works for both types!