Middle/Inner Chainring Compatibility?

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cosmicbike

Perhaps This One.....
Moderator
Location
Egham
I need to fit a new 42t 130 BCD 5 bolt middle chainring as the current one is worn to pointy teeth.
Is there a difference between an 'inner' and a 'middle' chainring? Seems to be a big cost variation, just wondering if there's any technical difference that will affect shifting?
 

gbb

Legendary Member
Location
Peterborough
I fitted a 40 to replace a 36. It didn't specify inner or outer....just 40T. That was an aftermarket chainring, a Dural IIRC.
 
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