RCP

HI,
I want to send a Used BARE Motorcycle Frame into Thailand. I know I have to pay the Excise / duty taxes of 35 to 45 percent. Has anyone imported used parts into Thailand using FEDEX / UPS by air freight ? CAN FEDEX / UPS Provide customs service for clearing the used part.
Can anyone provide a shipping customs agent who can take care of getting the Frame into Thailand.
I have shipped in New Parts without Problem , I just payed the taxes .

THANKS
RCP