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Author Topic: Eligibility for Pre 90  (Read 1654 times)

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Offline KTM47

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Eligibility for Pre 90
« on: November 18, 2013, 05:06:15 pm »
In the MOMS for the Pre 90 classes in says "Acceptable for Pre 90 class are machines and components built up to and including the 1989 model. The only exception to this rule is where the model remains unaltered after this date."


What I would like to know is what changes were made to the YZ/WR 490/500s after 1989. eg 1990, 1991 etc models.
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MAICOS RULE DESPITE THE FOOLS

1999 KTM 200, 1976/77 KTM 400,1981 Maico 490

Offline g465b

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Re: Eligibility for Pre 90
« Reply #1 on: November 18, 2013, 08:07:08 pm »
89 to 90 yz490-   graphics and std bars
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Offline kim80y

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Re: Eligibility for Pre 90
« Reply #2 on: November 18, 2013, 08:47:11 pm »
WR 500 uses the later 250 frame and swingarm etc from the 250's.

So definitely out.

Cheers
Kim 8)
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Offline KTM47

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Re: Eligibility for Pre 90
« Reply #3 on: November 18, 2013, 10:45:16 pm »
Quote from: g465b on November 18, 2013, 08:07:08 pm
89 to 90 yz490-   graphics and std bars

So a 1990 YZ 490 could be considered legal for Pre 90 as it really is a carry over model.
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MAICOS RULE DESPITE THE FOOLS

1999 KTM 200, 1976/77 KTM 400,1981 Maico 490

Offline kim80y

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Re: Eligibility for Pre 90
« Reply #4 on: November 19, 2013, 08:30:29 pm »
Yes.

Only very minimal suspension changes between 87 and 88, 89 90 exactly the same other than slight could changes/ graphics.
The most notable change of the pre 90 YZ490 years was 86 to 87- suspension changes and port changes.

Cheers
Kim 8)
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