Specialized's Shiv Carbon Seatpost is crafted from Specialized's FACT carbon for a premium blend of ultra lightness, outstanding power transfer and vibration damping. And, its single-bolt clamp holds fast and makes seat adjustments easy. The Shiv Carbon Seatpost only fits Specialized Shiv bicycles.

The Specialized CG-R seatpost extends the concept that “Smoother is Faster.” This revolutionary post features 18mm of vertical compliance, Zertz vibration damping, and FACT carbon construction. The CG-R delivers unsurpassed comfort, control, and efficiency without adding weight or complication to the frame. No matter what surface your ride takes you on, the CG-R will make it better. - Revolutionary design allows 18mm of vertical compliance. - FACT carbon construction blends durability and comfort. - Vibration-damping Zertz for increased comfort. - Cylindrical aluminum head assembly adjusts fore-aft and tilt with an easy-access single bolt. - Diameter: 27.2mm