The photo is of a piece found inside my Hotsprings Jetsetter. I think it is form the Moto Massage. Can anyone ID it?
What is the procedure for changing the Moto Massage?

Could you use an image host like http://imageshack.us/ ?

looks as though it's one of the vertibrae. Hard to tell by the picture. If it's still working, leave it. If not, replace it. It's pretty simple to remove and install new one. Comes with explicit directions.

Do you sell the Moto Massage kit and if so, how much?

here you go: http://scarritt.com/storjets12.htm $83.00