Joined: Oct 2017
Posts: 792
Likes: 301
From: NJ
Bikes: 68 SS, 72 Fuji Finest, 72 PX-10, 77 Pana Pro 7000, 84 Pinnarello Treviso NR, 84 Trek 520, 88 Project KOM, 90 Trek 750, 91 Trek 930
My '01 Zurich labeled 57 is 57 from center of BB to center of TT as measured along the ST.
(just went to the garage to measure)