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  1. #1
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    Default 1250 Kit question.

    Hey guys,
    I've got a '98 sporty and I'm thinking about getting the Revolution Performance 1250 cc Bolt-On Big Bore Kit from Dennis Kirk. They list fitment back to 2004, which I know is first year of rubbermount, which I don't have.... so, I was wondering if there was actually anything different between 98 & 2004 fitment?
    I don't want to get the cylinders and not be able to use them.
    Any help would be appreciated...

  2. #2
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    i believe there is a difference. the rubber mount bikes have a motor mount that bolts on to the front cylinder, i think. that doesn't mean it won't fit, but there are some differences. have fun spending that 2nd place check! you're a lucky bastard.

  3. #3
    LivingCanvas
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    Have you called dennis kirk? I bet they have a kit not listed that fits your bike

  4. #4
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    the cylinder head mounting bolts are differnt all you have to do is get a differnt braket i have 04and up screaming egle heads on my 03 they came with a new bracket but as far as just cylinders go there isnt a differnece in mounting

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    you want a kit for an 03-earlier..

    I cant tell you specifics on why theyre different, but I do remember reading a while back
    I think on XL forum about guys putting kits for solid mount motors on their 04-up bikes and having oil consumption issues.

  6. #6
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    cylinders shouldn't be any difference, more than likely the piston skirts are clearanced for the oil squirters 04+ has. Look up nhrs performance, instead of that catalog stuff
    actually just looked it up 04+ have bigger fins
    Last edited by mike1407; 12-03-2011 at 8:24 PM.

  7. #7
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    Quote Originally Posted by Twinkies View Post
    you want a kit for an 03-earlier..

    I cant tell you specifics on why theyre different, but I do remember reading a while back
    I think on XL forum about guys putting kits for solid mount motors on their 04-up bikes and having oil consumption issues.
    yeah i remember that it was a ring issue. so basically call dan at nhrs and he'll hook you up with the right parts. and their on sale right 699.

  8. #8
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    ^^^
    love my 1250 kit, and Dan is a good dude

  9. #9
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    Quote Originally Posted by mike1407 View Post
    yeah i remember that it was a ring issue. so basically call dan at nhrs and he'll hook you up with the right parts. and their on sale right 699.
    I would love to go through NRHS that was my original plan, but I got a free pass to Dennis Kirk and have to spend it there. I think that I'm gonna do what LivingCanvas suggested and call them to see if there is an unlisted version somewhere.

  10. #10
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    thanks guys.

  11. #11
    azmotorhead
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    the cylinders will work fine, dennis kirk may be offering for 04 and later models because thats what they would sell the most of, rev performance has different options to match their pistons to the heads you are running.

  12. #12
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    Just to let everyone know.
    Revolution got back to me, there will be no problem with fitment, and they are updating the Dennis Kirk website to reflect that.

    dope....

  13. #13
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    That 1250 upgrade was the best thing I did that my bike, even with the stock 883 ignition that thing screams now!!

  14. #14
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    ordered it today. is it next monday yet?

  15. #15
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    On your profile it says you have a 1200. Are you putting that kit on a 1200? Or do you have an 883?

  16. #16
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    I have a 1200. Over the past year or so I have been picking up parts. I got SE dual plug heads, Crane Hi-4 Ignition, HSR42 carb, and a mild cam. The 1250 kit is the last part that I have been waiting for.... I can't wait.

  17. #17
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    Keep us updated! I just got an 883 and Im looking for the 1250 kit now!

  18. #18
    azmotorhead
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    if you are looking for a 1250 kit, i am a revolution performance dealer.

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