Subrosa Bitchin Bottom Bracket.
Lightweight 6061 alloy full CNC cones
•Custom Subrosa R12 mid bearings with logo and white seals
•Available in 19mm and 22mm
•Includes: 2 sealed bearings, internal spacer, custom cone washers and extra alloy washers for perfect alignment
•Weight: 5.4 oz for 22mm / 6.1 oz for 19mm