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  1. #1

    2003 gp1200 Piston kit

    Hi guys
    can anyone shed some light on 2003 gpr1200 Piston size most catalogues list 2000-2002 piston kits but canít seem to find the 2003? Is the 2003 the same as 2002? I know itís powevalve engine not sure of bore size yet as I havenít stripped it yet but from what I have read 80 mm bore?
    thnaks guys


  2. #2
    steve45's Avatar
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    You're right, I don't see a GP 1200 listed for 2003. I was under the impression that these were plated cylinders, which are normally not bored oversize, but I see oversize pistons available from Yamaha. Who knows?

  3. #3
    butterbean_29512's Avatar
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    Oversize are available, but the cylinders must be bored and sleeved. Technically they could be bored and plated though. I know Millennium plates the 1390's

  4. #4

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    Question

    Quote Originally Posted by butterbean_29512 View Post
    Oversize are available, but the cylinders must be bored and sleeved. Technically they could be bored and plated though. I know Millennium plates the 1390's
    Im about to start a 1390 build... got any good advice?

  5. #5

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    Quote Originally Posted by butterbean_29512 View Post
    Oversize are available, but the cylinders must be bored and sleeved. Technically they could be bored and plated though. I know Millennium plates the 1390's
    I need to make 50 post on here so i can sell my single pipe 1300 ski...

  6. #6

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    Quote Originally Posted by Dean Lee View Post
    I need to make 50 post on here so i can sell my single pipe 1300 ski...
    Its a 1300 in a 2000 model hull .. all original graphics and matts in great condition..

  7. #7

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    Quote Originally Posted by Dean Lee View Post
    Its a 1300 in a 2000 model hull .. all original graphics and matts in great condition..
    Its got r and d heads for 150 lbs compression..

  8. #8

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    Quote Originally Posted by Dean Lee View Post
    Its got r and d heads for 150 lbs compression..
    Also has sharpend r and d intake great and shimmed ride plate... the pump has been reinforced and the hull has been sealed off with propoxy and sanded smooth for drag racing..

  9. #9

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    Quote Originally Posted by butterbean_29512 View Post
    Oversize are available, but the cylinders must be bored and sleeved. Technically they could be bored and plated though. I know Millennium plates the 1390's
    I need to make 50 post on here so i can sell my single pipe 1300 ski...

  10. #10

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    Quote Originally Posted by Dean Lee View Post
    Also has sharpend r and d intake great and shimmed ride plate... the pump has been reinforced and the hull has been sealed off with propoxy and sanded smooth for drag racing..
    1

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