I am in the process of planning my trip from Oz to the Uk, via Singapore etc. From what I have read, it is easier to ship your bike into Katmundu then ride into India.
If you are still in Oz (planning) there is a company called Dangerous Goods Management in Brisbane who are very helpful and they also have an agent in Bangkok. Give them a ring and ask for Jimmy, he is very helpful.
All the Best!!
“… all that is required for evil to triumph is for good men (and women) to do nothing ...”.