Expecting an "unusual use and abuse" claim on their end could easily get rid of any warranty if they wanted it to. Especially as easy as the stock diff can break because of wheel hop...
http://www.bnmotorsports.com
"And I will strike down upon thee with great vengeance and furious anger those who attempt to poison and destroy my CEG brothers. And you will know I am the Moderator when I lay my vengeance upon you."