ProX Top End Gasket Set YZ450F 10-13 Prox gaskets are manufactured by high quality factories to ProX specifications to ensure top quality sealing. Precision engineering and the use of first class materials guarantee the quality you demand from a gasket. The gaskets are complementary to our pistons and rods, so we developed a top end gasket kit and complete gasket kit. To ensure superior performance across a wide variety of engine types and sizes, we manufacture our gaskets from a wide range of materials. Whether the situation calls for the latest in advanced technology like our multi layer steel gasket or a synthetic blend fiber, ProX offers a wide range of products your application will suit. We combine these advanced materials with state-of-the-art manufacturing processes to provide custom-tailored solutions to meet the needs of each individual customer. Our design engineers have the ability to analyze the environment the gasket will perform in, select the proper material, and apply the appropriate technology to offer the highest performing gaskets available on the market.