Sugino offers two versions of track bottom brackets, Sugino 75 and Sugino Super Lap. Each has a spindle that is 109 mm. long, with symmetrical overhangs and are both certified for professional Keirin use (NJS). Either the standard Sugino 75 or the Superlap models will provide a perfect match for Sugino 75 or Grand Mighty track cranks.
The Superlap model adds mirror polishing to the races of both spindle and cups.