Zipps sl speed seatpost has become a favourite of pro road and cyclocross racers because of its light weight and dependability our redesigned sl speed offers the same range of adjustment as its predecessor but at a lighter weight zipps engineers used srams exogram technology to make the tube as light weight as possible and optimized our clamping system for adjustability security and ease of use whats more the sl speed is available in a 400mm length to accommodate road bikes with comp