The Ritchey WCS Seatpost features a two-bolt design that provides an easy to adjust, vise-like grip. Wide, low profile clamp reduces stress on lightweight saddle rails and won't bottom out on saddle. 25mm offset. Wt.: 236g. Available in road (280mm) or mountain (350mm) lengths. Diameters available are: 27.0, 27.2 or 31.6mm.
TR-WSP-27.0R and 27.2R are 300 mm . The mountain seat posts are 350 mm
rt8/09/07.