Bernie Mikkelsen, inventor of the "Pro Sizer" sizing bicycle as well as "Pro Fit" sizer, has been building…More bicycle frames since 1974, and can usually build his clients a custom-painted, made-to-measure frame in ten days or fewer.
Along with inventing frames, Bernie has also embarked on many experiences, including building his own frame jig from a turn of the century S.F. Chronicle cast-iron typesetting table. Bernie builds with steel only and blends many types of tubing such as Teynolds, Columbus, True Temper, Dedacciai and Tang, to tune a perfect ride.
With several different sizers, Mikkelsen Frames also features custom handlebar stems to complement any frame, with Custom paint by D & D Cycles of San Lorenzo. Mikkelson Frames carries almost every type of bicycle and also carries build kits with frames.