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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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<blockquote data-quote="PALMER84ONE" data-source="post: 209129" data-attributes="member: 6"><p>No argument here but.</p><p>Seals are not equal, ProX is equal to yamaha OEM. Same manufacture, Athena another good company for seals, as well as SKF. But Wisesco, Tusk, Cometic I have found the seals to NOT be equal. Case gaskets no big deal, but when it comes to head with compression involved of over 195psi, I would go OEM. If you look at RMATV like I said for the head, you will be pleasantly surprised at how low the price is now. I was buying these kits at 58, 48, and now they are under 30. All OEM everything from base gasket up, I bought 5 sets, 99 engine up all the same.</p></blockquote><p></p>
[QUOTE="PALMER84ONE, post: 209129, member: 6"] No argument here but. Seals are not equal, ProX is equal to yamaha OEM. Same manufacture, Athena another good company for seals, as well as SKF. But Wisesco, Tusk, Cometic I have found the seals to NOT be equal. Case gaskets no big deal, but when it comes to head with compression involved of over 195psi, I would go OEM. If you look at RMATV like I said for the head, you will be pleasantly surprised at how low the price is now. I was buying these kits at 58, 48, and now they are under 30. All OEM everything from base gasket up, I bought 5 sets, 99 engine up all the same. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
The 1999 YZ250
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