CATEGORY 01

Gear

Bikes, wheels, and kit — judged by real riding, not spec sheets.

68Gear

Gear · 2026.07.26

Bottom Bracket Types Explained: BSA, PressFit, T47, and DUB

The bottom bracket is the part of the bike with the most confusing naming in the industry. Four families, six thread and bore specs, and three crank spindle diameters — and almost none of them cross-compatible. Here is what each standard is, which one your frame uses, and why some are quietly dying.

Read story