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  1. #1

    Yamaha "Big Reed" Cases + Other Billet Goodies

    Don't laugh. I found these this weekend. This was the way to go in the early 90's. Weld on "Big Reeds" uses KX500 reed cages. These are brand new never assembled.
    make an offer.
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  2. #2
    Me Hahn and Joe H204YOU's Avatar
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    I wont laugh In 1973 I had a Penton 125 dirt bike.I had a reed cage cut from a scored RD-350 twin(=175)and had it welded to the cyl.I put aftermarket Boyeson reeds in it,drilled 4 holes on the intake side of the piston skirt and added a 32mm roadrace mikuni.That little 125 would pull around 250 honda elsinore's on the straight-aways,and run away and hide on the course

    You might state what size motor the cases are for.

  3. #3
    yz450f's Avatar
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    i love a good ole motocross story
    especially one with plenty or 2 stroke horsepower

  4. #4
    Moderator RX951's Avatar
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    welcome to the forum getreal

  5. #5
    yz450f's Avatar
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    yea i mite be interested as long as u can use the rest of the yamaha oem motor i mite be interested.

  6. #6
    Pm'd interested

  7. #7
    john zigler's Avatar
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    RIVA used to do that mod back in the day. ( looks like their cases). this would be a yamaha 61X 701 case, converted to a kawi 750 type intake, and reeds. they worked very good. this is really were the later 62t case came from.

    zig

  8. #8
    those are crazy! like a built in spacer but no pulse ports

  9. #9
    already sold them.
    maybe I need to make some more?

  10. #10
    yz450f's Avatar
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    that depends
    hoiw much speed gains are we talking???

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