PROTYPE 68 x 109mm ISO Taper Sealed BB

The number one question/email we get is…“Does anyone offer a reasonably priced sealed cartridge bottom bracket for the Sugino 75 track crankset, a true 109mm ISO taper bottom bracket?”. The answer for a very long time was unfortunately “no”.

anybody else want to get one of these and want to split shipping? are there any other sealed 109mm bb’s?