I called Monza yesterday to ask about the difference in the 95-9938 and the 95-9125 and the guy said that the inside "exit" diameter was the same on both tips even though the 9125 has the straight "pencil" look on the outside. Although, I kinda got the impression he wasn't totally sure of it.

I measured the inside "exit" diameter of the 9938 that I got and it's 1 5/8 inches even though the outside diameter is 3 inches. I'm no exhaust expert but 1 5/8 inches to me seems a bit shallow even if the rest of it is the resonation cavity. Maybe, if you can LSUMatt, can you measure the inside "exit" diameter of your 9125 and let us know what it is?

In any event, I'm sending this tip back to JC Whitney. I called them yesterday also and they don't stock the Monza 95-9125 or the 95-9225 ...said I'll have to go directly to Monza to order. BTW, according to the Monza site the 95-9225 has a 3 1/2 inch outside diameter so I'm thinking it should have a larger inside diameter as well. We'll see.

Later,
Rob