Maybe you can find a chainring, but you may have trouble to get matching cranks.
Btw, your development now is about 4,4 m - and you want a bit lower.
But 3,5 m is not really a bit - that’s 20% 
You are sure with the Mtb ratio?
Maybe you can find a chainring, but you may have trouble to get matching cranks.
Btw, your development now is about 4,4 m - and you want a bit lower.
But 3,5 m is not really a bit - that’s 20%
You are sure with the Mtb ratio?