Well... i have bought those cranks ... if i run those cranks on a 5 speed rear would i use a 5 speed chain or a 7 speed because of what i have up front.... this is confusing stuff...lol
Have a look on ebay, plenty of chains claim 5, 6, 7 and 8 speed usage.
While 5/6 should be wider the narrower 7/8 speed ones are now used and only bad luck makes it too narrow.
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