PATENTED ANTI SIDEPLAY SYSTEM Based on the patented quadrilateral and one piece forged stanchion, SATORI suspension seatpost is utterly immune to sideplay. The coil spring provides just the right amount of compression and rebound damping, also the preload can be easily adjusted to rider’s weight. By adding SATORI suspension seatpost you’ll ride faster, longer and less fatigue, all in the sense of great comfort.