Race Face Chester Seatpost Durability and Quality Race Face created the Race Face Chester Seatpost for those that like to hit big airs and punish their bikes on the hardest trails and not have to worry about punishing their gear. What is important to this rider is that the gear be strong and reliable. The Race Face Chester Seatpost delivers for the rider that needs strength and dependability. Constructed from 6061 alloy for high strength and fatigue resistance. Approximate weight: 299g (30. 9mm)Material: 6061 Alloy Designed for: DH, All-Mountain, Freeride | Race Face | Chester Seatpost | Black | 30. 9Mm X 325Mm | Aluminum