Hidden inside the seat tube, completely out of sight, this small component carries a big responsibility: keeping your saddle exactly where you set it, ride after ride. The Colnago V5Rs Disc Expander Clamp is the genuine factory part engineered for the V5Rs integrated seatpost system — precision-matched to the frame's internal geometry, not a generic wedge that happens to fit.

Colnago designed the V5Rs around clean lines and zero visible hardware. That aesthetic only works if the internal clamp does its job flawlessly: distributing pressure evenly around the carbon seatpost, holding firm under hard efforts and rough roads, without ever risking the kind of pinch-point stress that damages carbon. This expander does exactly that — quietly, invisibly, reliably.