Our classic threaded bottom brackets in a variety of colors: black, red, gold or silver.

All bottom brackets (except RS BSA 24) are available with ceramic ball bearings with steel races. As an option, higher quality bearings with stainless steel races and 4 years of warranty are also available. RS BSA 24 has steel ball and races bearings.

RS cups are made of AL6066 running steel ball bearings. LS cups are made of AL7075 running ceramic ball bearings.