NGK Iridium Racing One Step Colder Spark Plug EVO 9 Wheels 10mm of bump-stop deflection is

10mm of bump-stop deflection is included in the final rate of the system

- Billet Aluminum Black Anodized Mounting Pins

providing optimal feedback and performance 100% of the time

ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines

NGK Iridium Racing One Step Colder Spark Plug EVO 9 Wheels 10mm of bump-stop deflection isDesigned specifically for high horsepower and racing applications, NGK Racing spark plugs for the Evolution 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 for the EVO 9 feature platinum ground electrode and are individually hand build for the ultimate quality control and tolerance. Note: NGK Racing spark plugs are intended for