yz 450 head pipe torque stuffer cone insert?

Anyone heard of this bolt on cone head pipe insert. The claim is broader power band down low and 1.5 hp on top. If this part is that great it would be a well spent $30. I saw this on Ebay and would like to know if you guys could fill me in. It is called a Redz Torque Stuffer. :cry::cry::cry::cry:

Never heard of it, but if it goes in the head pipe, and in any way restricts it, it's either Snake Oil or Bull Sh*t.

I put one of those things in my pipe I could not tell any differance :cry: anybody want to buy it.........

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