Abstract: A system for coupling a saddle to a seatpost; said saddle comprising a fork (12) positioned below it; said seatpost (50) comprises a first pin (53) and a slot; said fork (12) comprising two lateral apertures bounded by a bar structure; said first pin (53) being insertable into said two lateral apertures; said first pin (53) comprising two heads (54, 55); said coupling system comprising an eccentric second pin (60) disposed in said slot; said first pin (53) and said eccentric second pin (60) each comprising two heads (54, 55, 61, 62), one per side, which abut against said bar-like structure bounding said two lateral apertures; said eccentric second pin (60) being rotatable.

Abstract: A system for coupling a saddle to a seatpost; said saddle comprising a fork (12) positioned below it; said seatpost (50) comprises a first pin (53) and a slot; said fork (12) comprising two lateral apertures bounded by a bar structure; said first pin (53) being insertable into said two lateral apertures; said first pin (53) comprising two heads (54, 55); said coupling system comprising an eccentric second pin (60) disposed in said slot; said first pin (53) and said eccentric second pin (60) each comprising two heads (54, 55, 61, 62), one per side, which abut against said bar-like structure bounding said two lateral apertures; said eccentric second pin (60) being rotatable.