NGK Racing Spark Plugs Stock Item:R5724-9 Racing Spark Plug NGK 6434 Top Outside Diameter: 168 mm

Top Outside Diameter: 168 mm (6

Comes as a pair

Produces long header torque and short header over-rev

Designed to withstand the unique conditions of racing

NGK Racing Spark Plugs Stock Item:R5724-9 Racing Spark Plug NGK 6434 Top Outside Diameter: 168 mmNGK have been igniting sparks since the 1930s. However, sparks dont just simply ignite. It takes a high amount of precision to create spark plugs that perform their task well and are extremely resistant in doing so. NGK Racing Competition Spark Plugs are designed for use in engines that have been fine tuned to achieve maximum power under specific racing conditions. NGK Racing Series plugs are engineered to withstand the harshest engine conditions