JIS or ISO for a 1988 koga miyata touring bike

[Jambonsambo]

Hi ,

does anybody know if this bike takes an Iso or JIS headset ?

Its a koga miyata roadrunner from 1988

Thanks

J

 

[Jonny69]

1988 could be either, or a mix of both - which is annoying. The only way to be sure is to pop it out and measure the cups and crown race diameter.