The WCS Carbon 1-Bolt seatpost is a masterpiece of Ritchey's design philosophy - to create innovative products that meet Tom's high standards for performance and durability. Whether it's a racing bike or the finishing touch to a custom bike, Ritchey's WCS Carbon 1-bolt seatpost offers supreme functionality in a strikingly simple design. The key feature of this beautifully efficient seatpost is the unique side-load bolt that holds the clamp wide while reducing tension on the saddle rails - keeping your bike's most critical interface secure as you rock, roll and tear up your favorite roads, trails or paths.