Cane Creek 3G Thudbuster Seatpost

"Redesigned to provide rear suspension for the intrepid hardtail rides. Get 3? of travel from this dual suspension frame alternative without the added weight. The forged aluminum linkage combined with an extruded post provides incredible durability. And unlike telescoping suspension posts, the Thudbuster? design eliminate stiction offering smooth unbinding travel over all types of bumps. Length: 400mm. Wt.: 540g."