• The size won't make any difference to the quality of the freewheel as the teeth are just on the outside part so could be any size. The freewheel quality is down to the internal bearings, pawls etc,. The same quality freewheel could be made to have either size of teeth.
    Saying that, the best freewheel seems to be the White Industries and that is only available in 3/32.
    And the chain quality depends on what you want to spend. You can get expensive or cheap chains in 3/32 and 1/8.

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