Nineteen hundred and 20 dollars (1920)for 20 kg of luggage ,I don't recommend to fly with Emirates
I'm cycling around the world and maximum charge for sport equipment with Air Canada ,Lufthansa,KLM is about 50 or 70 dollars.
Emirates on the leg from Dubai to Sydney Australia consider a bicycle just as regular baggage .
This a just friendly advice ,don't fly with Emirates with bicycle if you have another bag with you .
If the flight with Emirates is as a second leg on the same ticket ,no worries but don't begin trip with them from UAE (Emirates Arabs) to Australia or New Zealand

J