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.