Seller notes

Wiseco 87.50 mm Piston Kit Instructions can be found on our Installation Manuals page. Picture is for reference only. Fits: Yamaha IT490 1983-1984, YZ490 1982-1983 Instructions can be found on our Installation Manuals page. Wiseco produces high quality American made FORGED pistons, that stand up to the test of extreme racing conditions. Every Wiseco product is engineered with the most advanced technologies, for the ultimate performance and durability in all forms of PowerSports!Looking for other...

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