Seller notes

Moose Racing Top End Gasket Set Yamaha IT490 83 YZ490 82-83 M810680Performance sets designed for a piston replacementIncludes every gasket, o-ring and seal required to rebuild a top end; valve seals, head, base, exhaust, tensioner, and other misc. gaskets and o-ringsDoes not include formed rubber valve cover gasketFormed valve cover gaskets are included in complete kit with oil sealsHigh-compression kits use .012" thick base gaskets to raise compressionCost-effective way to raise compression wit...

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