KH ISIS Bolts Size!


I need to know the exactly diameter of the KH cranks bolt! My cranks are on the bike shop and I need this meassurment! Someone knows that?

And KH and K1 uses the same bolt?


The KH bolts are M12 according to
There are two sizes used in Koxx hubs; Koxx std and Koxx lightweight according to


M12 means that the diameter is 12mm? I Googled it but just found strange results…

Yup, M12 means the bolt is 12mm in diameter. This is probably way more info than you want but try this

This one’s a bit simpler but has some other useful info on other pages

Not sure why you need the diameter but if you are changing them you’ll also need the length of thread.