3t stylus 25 ltd carbon seatpoststylusis a fresh new take on the 2 bolt seatpost the transition from the pillar to the saddle clamp assembly is a finned rearward swoosh suggestive in shape of the classic one bolt posts of yore but the clamp bolts are deployed to either side of the saddle support cradle conferring greater stability and easier adjustment stylus 25 models set the clamp center 25mm behind the centerline of the seatpost for riders who prefer to sit further back on the bike top