My friend just also bought one. I started trying to find parts online for him and was having trouble finding them. I called the company who use to make them(sportwerks discountinued all of their RC's) and the lady told me that they are probably not going to make any more parts of rthe turmoil.
She said that his best bet would be to sell it and buy another buggy. We did find one store online that carried most of the parts for it, but the ones that say backorder are probably never going to be able to be ordered again.
If you want to keep yours I advise to buy all the parts you can find for it before they are gone, and you break something small that can't be replaced.
He had the mayhem last year and really liked it. It sucks that sportwerks is done. It seems they made very affordable cars for people who didn't really want to get into full racing.