Larger sizes of BSC can be 20TPI


BSA B31 500 "Stargazer"
Greeves 200 "Blue Meanie"
Greeves 350
Greeves 360
GM500 sprint bike "Deofol"
Rickman Jawa 500 "Llareggub"
'35 & '36 OK Supreme
Kawasaki ZZR1400 "Kuro No Senshi"
Kawasaki Ninja H2 "Fujin"