We name our posts after mountains in the Pacific Northwest, but for this post one mountain wasn't enough. The Cascade pays homage to the Cascade mountain range, home to some of the best riding in the area. This post is a workhorse, it's super reliable, loved by our customers and now features multiple travel options. With a air spring system, the Cascade provides dependable up and down service for the miles to come, and maintenance on the Cascade is easy (like all our droppers). Plus, external routing at the mid cap ensures your cables are kept nice and tidy during up and down actuation.PRODUCT SPECS125/150/170mm Travel OptionsDoes NOT Include Lever/Remote30.9 & 31.6mm Diameters2-bolt Micro Adjust HeadFixed External Routing at the Mid Cap for clean cable routing3-year warranty! PNW Cascade Dropper Seatpost Dropper Seatpost UPC: 850005672845