Comparing the Leo Vince X3 to the Q Stealth, the Leo Vince allows my 300 to rev out quite nicely. Where I was normally short shifting to grunt along the trails and avoid excessive vibrations, yesterday I was able to keep it in the lower gear and simply twist more to catch up. I can't say it made it "come alive," but it simply revs out comfortably without any drama or excess vibrations. Packing condition in either silencers is unknown. Also, the Stealth is a spooge trap but the Leo exhibits little to no evidence of spooge. It's a straight through design that requires a spark arrestor screen (of which I don't have, shamefully) but isn't any louder. Power valve seems to clatter more, a bit obnoxiously in fact. Weight is fairly comparable, I might have a chance to weigh them in the near future.
Bike- 2011 300, stock expansion chamber
Jetting- 6.5 notched slide
NOZG on second from top
162 main
35 pilot
AS at 1.5
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Phil
(New bike pending...)
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