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Hi guys I am looking at doing a few upgrade to my 2015 GTR 215 in the offseason, and I have a question about impeller pitch. The three impellers I am looking at have pitches of 14/19, 13/18, and 15/20R. My question is, which one of these pitches would offer me the highest top speed? TIA
 

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I don't know if you will get the answer you are looking for. Pitch is a single gear engine. If you have a tall gear, you have higher speed, but less acceleration. So the point is you want the perfect gear, to be right at Rev limiter, throttle WO... And your top speed is going to be what it is. Your impeller won't give you speed you don't have.

Now, if you are WOT, and you are constantly on the Rev limiter, then ya, you have to drop pitch. So where you ride, with what you do... Where is your RPMs and Rev limit?
 
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