Free 2-Day Shipping on all orders over $50*


Quicker to the finish.

When every little bit counts, SRAM delivers with their BlackBox components. Usually reserved for elite racers, these ceramic pulley bearings give your XO derailleur the edge.

Share your thoughts

What do you think of the

SRAM BlackBox Ceramic Bearing Pulleys - Mountain

? Share a...

Write a review

No file chosen

Rather attach a photo from another website?

Rather attach a photo from your computer?

  • Product review:
  • Share a video
  • Share a photo

How familiar are you with the product?(Optional)

Only jpg, jpeg, png, gif or bmp files please.