seat post dropper

I think it’s a Katsuma and it’s not the air model (No schrader valve below seat clamp). 30.9 Diameter 150mm travel My Very rough measurements here: Center of clamp to top of collar fully compressed is 35mm plus 150mm travel 185mm. Collar is 25mm Minimum insertion to bottom of actuater is...

For sale is a Exaform 861 seat post dropper. 27.2 size seat post length is 365 mm I got this one new off of Ebay for $90. I used it twice and it works perfectly, but then I decided that I really don't need it as I'm not going to be riding single track very much for the next few years. So...