Manufactured by Namura HyperDryve Series piston Kit Includes piston, rings, pin, clips you get exactly what is pictured The HyperDryve line of pistons is composed of a space-age hypereutectic aluminum alloy developed by NASA. Engineered to maintain its high tensile strength up to 700 F 370 C , 50% higher than a conventional cast piston, this gives HyperDryve pistons the strength to perform under operating conditions normally reserved for forged pistons. Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life. Also allows for smoother start-ups break-ins. Piston dome is anodized for superior heat resistance and longer lifespan Kit is for standard bore size 96.00mm Size B piston is 95.96mm Compression ratio of 12.8 1 Made in Taiwan Fits 2006 Kawasaki KX450F 2007 Kawasaki KX450F 2008 Kawasaki KX450F 2009 Kawasaki KX450F 2010 Kawasaki KX450F 2011 Kawasaki KX450F 2012 Kawasaki KX450F 2013 Kawasaki KX450F 2014 Kawasaki KX450F 2015 Kawasaki KX450F 2016 Kawasaki KX450F