Free Shipping on Orders Over $99

Free Shipping Policy

Free Shipping applies to all orders placed for $99 and above
(pre-tax value). Some restrictions apply:

  • Offer valid in the Lower 48 States only
  • Excludes Travel Cases and some other oversize items (prices can be calculated in the cart before checkout)


Offer valid for 10% off qualifying items.

Some exclusions apply.

For questions, contact us by calling 1.800.627.6664

Rotor BSA 30 Bottom Bracket

The Rotor BSA 30 bottom bracket allows the use of a 30mm spindled Rotor 3D plus crank on a frame with an English threaded bottom bracket. So you can get the stiffness of a 30mm oversize spindle even with a threaded bottom bracket shell. The only catch is you have to use the 3D Plus crank, as the spindle on a standard BB30 crank is too short.

Like all Rotor product the precision boutique machining of these BSA 30 cups are simply beautiful. Choose your BSA 30 with ABEC5 bearings or C3 Ceramic bearings for some additional performance. Either bearings are noticeably smoother than stock outboard bearings. Rotor includes instructions and an outboard cup installation tool.


  • Perfect machining and attention to detail
  • BSC/English thread
  • Enduro ABEC5 or C3 Ceramic bearings
  • Compatible with Rotor 3D Plus crankset
  • 85 grams