Last year I took Kuehne & Nagel, Kuala Lumpur to airfreight my bike to Perth. They accepted bike to go uncrated on Malaysian Air flight next day. Cost approx. US$1,000. I left for Perth. Bike did not arrive. Malaysian had not accepted uncrated bike. Crating cost me an additional US$600 plus various other charges. I felt ripped off and sent a letter of complaint to head office in Switzerland, but received no reply.
My suggestion: Drive out to Kuala Lumpur International Airport and shop around. Go to K&N and to other companies. Pick the best offer, and hope for the best. It will be much cheaper than shipping from Singapore. Good Luck!