Namura Top End Rebuild Kit for 1988 02 Kawasaki KLF220 Bayou 68.50mm NA 20001 6K 2003 Honda TRX450 FourTrax Foreman ES Photochromic lenses (VLT 46 15%) that Photochromic lenses (VLT 46 15%) that change with altering light allow for greater clarity and for night the Gunner also comes with a clear set of lenses this ESG775 also comes with a full one year warranty Namura gives you a higher performance piston without the higher price Product Details Product Line Namura Top End Rebuild Kit Part Number NA 20001 6K Fitment Type Model Size Specific Fitment Use Type Aftermarket Replacement Unit Sale Qty Style Oversized Bore Piston Kit Size 68