Join Date: Feb 2009
Location: Titusville, FL, USA
I recently purchased a new ("leftover") 2008 GT at a much-reduced price (if you can find one, something to consider).
Regardless, I paid for an extended warranty.. This, even considering it was new and I have a factory warranty.
The bike is sophisticated, complex and has some very expensive parts. Even with reasonable dependability, one or two "big" parts outside of the factory warranty would more than pay for the extended warranty.
Unless you don't plan on keeping it that long, or the price is prohibitive, I say yes.