exhaust collector

[tsak]

Has anyone tried a free flow exhaust collector like delkevic or black widow with oem silenceres?
What should i expect?

[Pat Conlon]

I would not expect much of a performance gain, if any at all.
The Yamaha oem collector box is open and very free flowing with much more internal area (volume) than the tubular aftermarket collectors.
The only benefit of the aftermarket collectors are that they are stainless steel and not subject to rust/corrosion like the oem steel collector box.

It's the oem mufflers that are heavy dogs.

[Cash Dereszynski]

They are lighter by 2tons per silencer.
So there's that.
Also my Delkevic's aren't that loud even with the extra baffles out.
Cash