 For 2009, Zipp introduced a new 88/188 hub series with adjustable pre-load, seals, wider axle and higher flanges, redesigned the 404 and 808 all carbon rims giving them toroidal braking surfaces.Zipp's 2010 product line featured two new wheel models.The Super-9 is a flat-sided, 27.5mm disc that Zipp claims matches the Sub-9's ability to generate forward lift, but avoids the interference issues that have occurred with the Sub-9's bulged section on bikes with very narrow chainstays.