A fresh look and a new logo for 2017 for the zero1 seatpost it features the same iconic twinbolt adjustment from the rsx02 seatpost a light 6061 alloy seatpost that offers unbeatable value for money features material alloy 6061 length 350mm diameter 272 and 316mm setback 20mm weight 295g 316mm compatible with deda adaptor for di2 battery