H.S.I. big bore head pipe gasket for Yamaha factory b-pipes and all solid top 3 bolt head pipes.
51mm diameter (standard is 46mm). Top quality HD metal w/ fiber gasket.
We were tired of how expensive these HD head pipe gaskets had become from other vendors, so we decided to have our own made to set retail at a much more reasonable price.
*PLEASE NOTE - We do NOT recommend this big bore head pipe gasket for most Kawasaki applications as it will expose the water jackets.
Part Number: HSI-88-U-HP51
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