Amazon.com : ULTRACYCLE Seatpost - 26.4X350mm, All Alloy, Black Kalloy - Versatile BMX, Road, MTB Bike Seat Post - SP-243 : Bike Seat Posts And Parts : Sports & Outdoors
Cane Creek Thudbuster ST Suspension Seatpost - Cane Creek Cycling Components
Seat Post 27,2mm Kalloy Uno Aluminum with suspension