Joined: Aug 2019
Posts: 77
Likes: 31
From: Copenhagen, Denmark
Bikes: 1991 Centurion Oxygen, 1997 Centurion Invincible, 1995+- Fondriest Wind, 1982 Grand Master Nissan Pro 2000, 1992 Olmo Racing (The racing part of the name HAS to be a joke).
According to velobase, you should use 113mm if the Trek has an English BB-shell, or 115mm if it´s Italian. I´m using 115mm symmetrical with 6400 (The are specied to use the same length of bb) cranks on both my Olmo and my Fondriest, and thats a perfect fit on both.