For those riding in wet conditions Monocrome Bottom Brackets are available with CNC Storm Drains. These water drains allow water to escape from the cup before it can corrode or enter the bearing. The drains are invisible once the bottom bracket cups are assembled.

Bottom Bracket Cup with CNC Storm Drains

6805 Chromium Steel (Monocrome):
Chromium steel caged deep groove ball bearings with plastic sleeves.  As with all Monocrome^TM bearings, these bearings  carry a special guarantee with a 6 month no questions asked replacement.

6805 Stainless Steel (Monocrome):
Stainless steel caged deep groove ball bearings with plastic sleeves.  When purchased with CNC Storm Drains these bearings carry a special guarantee with a 12 month no questions asked replacement.  When purchased without the CNC Storm Drains the standard Monocrome^TM 6 month guarantee applies.