KS Wiper Seal In just a short amount of time dropper posts have become an essential part of mountain biking, and for good reason. We all love the ability to be able to drop the seat on the fly to make tackling technical situations that much easier. Part of the ownership of a dropper post is dealing with maintenance issues when they arise. We here at Jenson are here to help you by supplying you with the parts needed to keep your dropper running in tip top condition. This wiper seal by Kind Shock is designed to restore the smooth cycling of your Kind Shock post measuring 30. 9, 31. 6 and 34. 9mm in diameter. It is not compatible with 27. 2mm posts. Features KS Wiper Seal maintains smooth operation of your KS dropper Compatible with 30. 9, 31. 6, and 34. 9mm posts Not compatible with 27. 2mm posts | Ks | Wiper Seal For Ks | 30. 9, 31. 6, 34. 9 Posts