Uncategorized Namura gaskets???? February 12, 2017 dstech I’m doing the top end on my 1999 sportsman 500. What do you guys think of the namura top end gasket kits? It comes with valve seals. Will these gaskets last just as long as the stock gaskets? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related