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  1. #1
    RobWCanada's Avatar
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    4" Air Filter Options?

    Hey all,

    I'm trying to price out and build myself the Kanaflex 4" intake.

    I've read on the forum that a lot use the Spectre 9735 SS but I've also read it rusts and is not very durable.

    I see on the GreenHulk store (http://www.pwc-performance.com/) that there are R&D Plenum (pretty expensive) filters, some suggest the Kawasaki 250X filter (is this stainless steel as well???).

    Also, are there any others? Does K&N make a universal filter that would work?

    Sorry if this has been asked already, but I couldn't find anything.

    Also...what clamps are people using on the Kanaflex? And what about the 4" Stainless pipe from Kanaflex to filter join...where do people buy that? Spectre makes a 4" dia x 3.5" chrome tube for $8....

    Any info would be good.

    R


  2. #2
    mrbtd's Avatar
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    The Kawasaki filter is the way to go. A little smaller than the spectre and you help support the site. I chose to use the prefilter available for it.

    You are going to need a way to go from 3 to 4" on the S/C the R&D adapter is the way to go for this.

    For the hose you need to get it up front. Consider spectre 9751 4" tubing. You would need two sections and a way to join them together. I have used that stuff a couple times now and its great. The hose already has a coupler piece for both sides so no additonal pieces are needed.

    Other than that you need a bracket for the filter. Instead of a catch can I left the OEM rubber piece there and put in a 2" PVC cap with a clamp around it. The cap has an OD of 2.75 so it fits perfect. I am fairly confident it will work well.

  3. #3
    mrbtd's Avatar
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  4. #4
    RobWCanada's Avatar
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    Your ebay link in that thread no longer works.

    Do I have to install a catch can? The one in the GreenHulk store ...the fizzle kit, what kind of catch can is that? Or is that cool thing not a catch can?.,...hehehe

  5. #5
    mrbtd's Avatar
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    you can google Spectre 9751 that thread is from 2 years ago I think.

    Do you need a catch can ? It is up for debate. I had one for 2 years and nothing was ever in it. If you plug the rubber piece under where the existing hose is then you could clean it out there. It is vented back through the OEM air intake set up if you decide to leave all that on the gas tank.

  6. #6
    Ride it! GPR Ed's Avatar
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    Thumbs up

    I bought this filter and it doesn't require oil. Not sure how well it performs or any rust issues but another forum member seems to have no issues with it!

    http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWNX%3AIT

  7. #7
    mrbtd's Avatar
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    thats a big filter...

    Another 4" thread for DIY types.
    http://www.greenhulk.net/forums/show...ghlight=intake

  8. #8
    RobWCanada's Avatar
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    AEM one looks interesting...

    Is that Kawasaki Riva one stainless steel...I think I read it was, but I'm not sure...

  9. #9
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    Just skip the Filter, unless u plan on riding in the Dirt!

  10. #10
    RobWCanada's Avatar
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    wouldn't this make more sense if I was to go with AEM?
    http://www.aemintakes.com/search/pro...?Prod=21-205DK ~5" long

    Also, why get that instead of the Riva Kawasaki one?

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