New updated design! An evolution of the original Pivotal seat system, the Stealth system allows the seat to be installed without the need to insert a hex key through the top.
The Stealth system eliminates the need for a patch and slot in the seat, and the seat mounting bolt can be bolted on from the bottom using a Stealth seat tube.
Kink Stealth seat tubes are made from a single 3D machined piece of 6061-T6 aluminum and are available in a variety of lengths.
Note: You can also use traditional Pivotal seats with Stealth seat tubes.