uwish

Hi all

i have searched web and cannot come up with an answer?
what i would like to know is how is the hp difference created between and ultra 250,260,300?

is it just a computer tune?, more boost? ect? or a combination of things?

thanks ben

Outlaw

I don't ride Kawasakis, just race against them. I can tell you that 300x geys most of its more horse power from a big EATON twin screw supercharger. The Ultra 250 vs the 260 is more than likely tuning. But again I am not a Kawasaki rider and never will be.

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2006 RXT with RIVA STAGE THREE KIT 295 HP

2009 RXT-IS 255 HP

2008 GTX 215 HP



Land Rocket - 2003 Z06 Corvette, Chevy

uwish

ok thanks so is the super charger bigger or different on the 300x compared to the 250/260x?
the reason i ask is that as the moment there are a couple of 250x's forsale (in New Zealand) and they are half the money a second hand 300x is, and as im not going to be using the hull just the running gear i wondered were the difference is in the motors?
and how hard is it to make a 250x motor a 300x?

the running gear will be used in a mini jet boat, so top speed is not important but hole shot is and to be honest a 15f motor would be fine but super charged would be better!!!
going down stream in river last weekend with a new boat and standard 15f motor we got 68mph on the gps so in a river thats plenty fast enough but the "holeshot with a 250x would be even better.
here is a you tube link to what we do if anyones interested the boats on these vids are twin and triple 2strokes
cheers ben

octobon

which lab did you dyno your engine to determine 295?