Full Speed Ahead Gossamer Seatpost The Gossamer seatpost features a forged 6061-T6 aluminum shaft and a lightweight NANO saddle clamp with single-bolt adjustment. Its anodized finish and wide angle range make it easy to dial in your fit offering strength adjustability and sleek aesthetics for road cyclists seeking dependable performance. Features Forged 6061-T6 aluminum shaft Lightweight NANO saddle clamp with single-bolt adjustment Anodized finish Wide angle range | Fsa | Full Speed Ahead Gossamer Seatpost 27. 2Mm | Aluminum