Profile 19mm Hop-Up American Bottom Bracket Set - Black Anodized - USA Made Freewheel 4" (ISO 406mm)

4" (ISO 406mm)

Forged aluminum body

One side is threaded for 1

Color: Red

This tire features a multi-edged S/M shoulder tread design that looks cool and holds the ground

Profile 19mm Hop-Up American Bottom Bracket Set - Black Anodized - USA Made Freewheel 4" (ISO 406mm)For frames with American BB shells, this Profile Hop Up Kit offers a finished look while providing cups, sealed bearings, a tube spacer, cone washers, and flat washers. The spacers and cups have an anodized finish. This bottom bracket will fit many popular 19mm cranks such as Profile Race, Redline Flight, Fit, DK Social and most any other 19mm crank. Formerly known as the American Bottom Bracket Kit with Hop Up. Color: Black