Upgrade your saddle support and smooth out the ride with the Syncros' FL1. 0 Carbon Zero Seatpost. Featuring a carbon fiber post paired with an aluminum clamping mechanism, this saddle is a lightweight addition that works hard to minimize vibrations and bumps on the road or trail for increased comfort over the miles. The FL1. 0 Carbon Zero boasts an easy to adjust, two bolt clamping system that's compatible with both round and oval rails to pair with your favorite saddle. An anti slip design ensures those saddle rails stay in place and keeps your fit on point over the miles. The seat clamp assembly on this post sits directly above the seatpost's center line for riders who prefer a more aggressive position on top of the cranks.