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Kawasaki Ultra 250/260/300/310 Performance, Maintenance, and Information Database

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  • #31
    Hey, New on here. Unable to make a post for some reason with a new topic, but searching for a 2007 250x Engine parts. Rod went through mine so will need crankcase, crankshaft.. Want to keep mine and rebuild it... If you have please let m eknow.

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    • #32
      Thanks for such an awesome sticky post, in the last 6 months I’ve bought 2 2011 300lx and a 2013 ultra 310. This website is perfect for me, because I research the crap out of everything before I buy it. Thanks again, can’t wait for the water to warm up in Kentucky.

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      • #33
        IClick image for larger version

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        This is the filter in the pump after 140 hours
        Bog down at wot then pick up again then bog down..

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        • #34
          hi new here I want to know what will it takes to make my 310r to 75-76mph ?
          because I just did a scom ,rear bov block plate, and custom cold air power filter and that's it clocked in gps 75.7mph.
          now I'm pretty sure with a ride plate sponsons impeller should give me another 3-4mph.



          PLEASE CORRECT ME IF IM WRONG ANYONE .

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          • #35
            Originally posted by Kawi310
            hi new here I want to know what will it takes to make my 310r to 75-76mph ?
            because I just did a scom ,rear bov block plate, and custom cold air power filter and that's it clocked in gps 75.7mph.
            now I'm pretty sure with a ride plate sponsons impeller should give me another 3-4mph.
            I'm pretty sure that 75.7 falls within the 75-76 MPH range.
            '15 Kawi Ultra 310X
            '99 Kawi Ultra 150 (2)
            '10 Kawi Ultra LX, '13 Kawi Ultra LX, '13 Kawi Ultra LX parts 'Ski
            '04 Kawi STX 15-F, '06 STX 15-F (2)
            '91 Kawi Jet Mate
            '97 Yamaha Exciter 220 (Boat)
            '99 Yamaha Exciter 270 (Boat)
            '78 Nacra 5.2 Catamaran
            '05 Windrider WR-10 Trimaran, '05 Windrider WR-16 Trimaran
            ... and that's just the boats! I'm living proof that you can have too many toys!

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            • #36
              sure now 79-81mph is it goin to be easy like this or it gets harder to gain speed after 75-76mph????

              is it worth spending the extra money for a ride plate , sponson, water box, exhaust, impeller , stage 2 Riva flash 8800rpm and valve spring & retainers to go or to try to reach 81+mph ??????????
              Last edited by Kawi310; 07-30-2019, 05:12 PM.

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              • #37
                now I did the oil change and spark plugs at 18h and my speed went down to 73.5mph ??? any idea why

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                • #38
                  Now your GPS is reading correctly !!!
                  before it was set to SEADOO or YAMI ( those setting always read fast for internet purposes )
                  People who believe in the faulty piston scandel obviously voted for Creepy Joe.... FYI the world isn't ending in 12years you idiots

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                  • #39
                    I just picked up a 2012 300x.

                    I am thinking I will do the SCOM, Ride Plate, and pump wedge. What can I expect for speeds from that?
                    Current:
                    2016 Yamaha 212x
                    2023 Yamaha FX SVHO
                    2010 Seadoo 260 RXXT

                    Past:
                    2020 Yamaha GP1800R * 2016 VXR * 2015 FX Cruiser SVHO * 2013 FZR SHO * 2012 Kawasaki 300x Ultra * 2012 GTR * 2010 RXT-X 260 * 2009 FZR * 2008 RXP-X 255-2 * 2008 FX Cruiser SHO * 2006 RXT * 2006 GTX 185hp * 2005 RXP 215 * 2004 RXP 215 * 2002 GTI LE * 1997 GTI * 1996 GTX * 1996 XP * 2007 VX Cruiser * 2007 AR210

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                    • #40
                      Hi I'm looking for someone can test my ecu im also looking for a good used ecu with keys if possible I got one coil pack that fires the 2-3 does not please help

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