YST Bottom Bracket.
Full set. New in packet.
Bottom bracket cup size 51mm.
Suitable for Old School 80's BMX 1 piece 24TPI cranks eg. Sugino, Takagi, SR.
Will not fit old school Mongoose 1 piece BMX cranks which are 28TPI.
Ideal for your Raleigh Burner or any (not Mongoose) old school BMX bike.
See my other old school BMX items.