Used to run a Yamaha Black Stainless 13x17 on my 2006 Ghost with 90 Yamaha stroke could only squeeze 5100rpm out of her. After trying different props and brands, I had a local prop shop tune another Yam Blk Stainless 13x17 into a 13x15 and now get 5500rpm out of her. Lost it 2 mphs though for doing that. Hole shot stayed the same as I had the 13x15 ported.
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