The Specialized S-Works Tarmac Carbon Post is a lightweight, high-stiffness seatpost designed for aerodynamic efficiency and vibration damping on performance road bikes. Made from FACT 11r carbon with an aero-optimized profile, it features a 20 mm setback to fine-tune saddle position. The satin carbon finish provides a sleek look, while the two-bolt micro-adjust clamp allows precise saddle angle and fore-aft adjustments. Compatible with round 27.2 mm frames, it balances low weight with reliable strength for racing and spirited riding.

• Diameter: 27.2 mm

• Length: 380 mm

• Setback: 20 mm (offset)

• Material: FACT 11r carbon fiber

• Clamp: two-bolt micro-adjust alloy headpiece

• Finish: satin carbon

• Weight: approximately 165 g

• Compatibility: round 27.2 mm seat tubes; designed for road frames

• Use case: road racing, performance riding requiring aerodynamic and compliance benefits