The Stratum Carbon seatpost is an easy upgrade for nearly any bike: its carbon fiber construction cuts weight and road vibration for added efficiency and comfort in the saddle. A two-bolt adjustable head and multiple offset options make it easy to dial in your perfect saddle position. Match Stratum Carbon with the rest of our Teravail cockpit components for that sleek and subtle look. Key Features - Unidirectional carbon fiber construction with a forged aluminum head - Two-bolt adjustable head - 400mm length - Available in 27.2mm, 30.9mm, and 31.6mm diameter - Available with 0mm or 18mm offset - Tested to ASTM 3 / ISO MTN