Designed specifically for high horsepower and racing applications, NGK Racing spark plugs for the Evo 9 are used by some of the most winning teams in competitive motorsports and will easily support motors running in excess of 1000 wheel horsepower. NGK racing spark plugs feature platinum ground electrode and are individually hand build for the ultimate quality control and tolerance.
NGK Racing spark plugs are intended for high horsepower applications only and should only be considered when running at least 100 hp over stock.
These plugs are one step colder than stock.
Part Number: 4901