73mm 4130 BSA BB shell

$16.50

73.5mm Steel BSA BB shell with internal relief. OD is turned for easy weld prep. Drive Side is easily identified with OD groove.

1.5” OD

1.37”-24 thread.

73.5mm Steel BSA BB shell with internal relief. OD is turned for easy weld prep. Drive Side is easily identified with OD groove.

1.5” OD

1.37”-24 thread.