I was just starting to hunt around for Australian made bike gear, and discovered that Human Powered Cycles in Melbourne have already pulled it together.
As they say in the introduction: “Ok so we know the benefits of local stuff… minimising transport requirements reduces emissions. And warranties are much easier. The products are better supported and with lots of these businesses we can give feedback on what we like and what doesn’t work. They will sometimes be able to incorporate this feedback into future designs and manufacturing runs. Anyway, local gear is good and we’re supporting it!”
You can find their listing here.