Gutaaaooo,

I've got one exactly like that, for my DL50. Got it
from Troy Built Models, and was called a Silent Beauty.

If you looked down the exhaust pipes, you could
see where the pipes went completely to the other
side of the can, and each pipe has several holes
for exhaust to exit from. More of a true muffler than
what most of our gassers come with stock.

NOT really so silent.