The FSA BB90 bottom bracket.

Trek Madone frames feature the BB 90 bottom bracket standard; FSA offers this bottom bracket for fitting FSA cranksets with the Megaexo axle.
The standard bearings are well-sealed and run smoothly.

FSA BB-90 bottom bracket technology:

• Press-fit diameter 41 mm
• Steel bottom bracket
• For 24 mm axles
• Bearing width 7 mm
• Bearing diameter 37 mm
• Bearing type MR-105
• Weight: 44 grams

Herstellerinformation: FSA – FULL SPEED AHEAD Europe, Via del Lavoro, 56, 20874 Busnago (MB), Italy, https://www.fullspeedahead.com