FEATURES: 6061 CNC machined Alloy cups w/ Precision sealed bearings.
BEARINGS: 19mm Mid Sealed (x2) (w/ American cups)
SPINDLE: 19mm, 8 Spline (NOT included)
SPACERS: 6061 Alloy cones w/ 15/16"/19mm hat washer and 4x spacers included
NOTE: These sealed American BB & American BB sealed upgrade kit are designed to replace the bearings of an unsealed American BB with a sealed version. Fits most complete bikes that come with unsealed American 19mm BB.
