BSA Bottom Bracket made to 83.5mm to allow for facing
Reynolds 631 Steel
1.375 x 24 TPI thread (English)
There is a facing groove to identify the left hand thread
BSA Bottom Bracket made to 83.5mm to allow for facing
Reynolds 631 Steel
1.375 x 24 TPI thread (English)
There is a facing groove to identify the left hand thread