BB30 mountain bike bottom bracket shells are wider than road, 73mm, and share the same diameter; 42mm. The bottom bracket here allows you to install your SRAM or Quarq MTB crankset into a BB30 mountain bike.
This is how you get minimum drag, no adapters necessary. Our bearings are installed into aluminum cups that thread together for quiet durability. There are two bearing options. The first choice is our low drag, long life Standard Bearing, with hardened-steel races and our super round CeramicSpeed balls. The second choice is our Coated Bearing, which uses those same balls installed on coated, hardened-steel races for longer life and lower drag.
In The Box
- Bottom bracket with bearings installed.
- 2 dust covers.
- 2 1mm spacer.
- 2 0.5mm spacer.
- 10ml syringe of CeramicSpeed LongLife Grease.
- Sticker sheet.
