Zoom MTB Bicycle Suspension Dropper Seatpost 31.6mm 100mm Remote External Cable. ZOOM Mountain E-Bike Bicycle Suspension Dropper Seatpost. ZOOM has been a leading supplier to the bicycle industry for almost 40 years, with a focus on providing innovative handlebars, stems and seat posts to bicycle assemblers and consumers globally.. This zoom adjustable seatpost is hydraulic made by aerospace aluminum. Easily moving and can stop at any position.External Cable Routing&Remote Control Type: Hydraulic Dropper Seatpost. Post diameter:30.9mm/ 31.6mm available. 719g(30.9mm) / 726g(31.6mm). Buyers can return items in 30 days since receiving the items as long as keeping it unused and original box. E are a trading company and have sufficient stocks to accommodate various product requests. Our goal is to provide the cheapest and best quality products to our buyers. Just come surfing our store and enjoy it! This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Seatposts". The seller is "just-relax" and is located in this country: US. This item can be shipped worldwide.