ORIGINAL: Tommygun
When you say a new Dirty Birdy with a hot .60, you mean it has an engine that's out of production, right? Does anyone really make a hot 2 stroke .60 anymore? Besides Jett? All OS has is that .61 FX. Had one- it wasn't that hot.
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You can buy newly made Rossi AXE .60's on e**y. I haven't ran mine as yet, so I can't attest to how hot it is, but I would be surprised if it didn't cook like an old one. And the price was less than what I would have paid for an equivalent Rossi "back in the day".