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  1. #1
    Gpr man now 9t8gp1200's Avatar
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    1200R flywheel:lighten & balance

    All,

    Does anyone on the forum balance and lighten the stock flywheel for a GP1200R? I know George of HPT used to, but I believe he has passed away and I'm not sure the business is still operating. Any help would be appreciated!

    Thanks!
    Brad


  2. #2

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    fly wheel mods

    i know groupK used too do kaw 750 flywheels not sure if they do gp"s.would also like to get it done now that my boat is in pieces.

  3. #3
    My son (mohawk man) jeffsntx's Avatar
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    Tim Judge did one for me a couple of years ago. I dont know if he is still doing anything on the GPR's except for porting though. THe one he did for me was an OEM non charging though.

  4. #4
    2000 GPRXP 4tec shooter98xpl's Avatar
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    Jeff,
    I had asked Tim Judge about this a year ago when he did my porting. He told me he did not like to lighten the oem flywheels because they had the tendency to get weak and then crack.
    9t8gp1200 I know there were some lightened rad flywheels for sale on the board. May want to do a search for it. I am sure groupk can lighten the oem flywheel up, I'd get them to weld it though. Call Harry up, great guy to deal with.
    SHOOTER

  5. #5
    Hydrotoys's Avatar
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    the rad flywheels are the worst crackers of them all. Avoid like the plague.

  6. #6
    Moderator OsideBill's Avatar
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    Pics of mine, this was done by HPT back in the day. RIP George.
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  7. #7
    billy's gpr's Avatar
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    Quote Originally Posted by OsideBill View Post
    Pics of mine, this was done by HPT back in the day. RIP George.
    bill how much lighter then stock is it???

  8. #8
    Moderator OsideBill's Avatar
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    Quote Originally Posted by billy's gpr View Post
    bill how much lighter then stock is it???
    I have to look back through some old notes to find the difference.

  9. #9
    2000 GPRXP 4tec shooter98xpl's Avatar
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    If I am not mistaken the stock ones are around 4 lbs and the lightened ones range from 2 to 2 1/2 lbs.
    SHOOTER

  10. #10
    I can lighten your flywheel the same way George Grabowski did, but it's expensive to do because it has to be mounted on a rotary table using a milling machine to cut the center section between the trigger pickup points.

    Most people just lighten them by cutting the front and rear section around the crank pickup area using a lathe.

    My normal flywheel lightening price is $60 with free return shipping within the USA, but if you want it done like HTP-Sport did, it will cost $130.

    Also, I have some 61X & 62T lightened flywheels in stock for $100 with free shipping in the USA.
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