Looks like you can get the 160 mm in 6 bolt. Hmmm. Road seems to be adopting 140mm as standard from what I can gather.
Do you mean the actual disc rotors? Or is your question more along the lines of 'can I use 6 bolt discs with Shimano calipers?'
@andyp started
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Looks like you can get the 160 mm in 6 bolt. Hmmm. Road seems to be adopting 140mm as standard from what I can gather.