Seller notes

Rebuild your top end with this complete kit. The kit is centered around a new Namura piston kit. These pistons are top quality and include all the features of the more expensive pistons like teflon coated skirts, anodized domes, and machine finished heads. This kit includes a STANDARD 87.89 MM piston kit with rings, pin and circlip. The top end gasket kit includes head, base, side cover and exhaust gasket to rebuild the top end of your Polaris 400. Even includes the valve seals! Don't ever re-us...

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