Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.
This Part Fits:
| Year |
Make |
Model |
Submodel |
| 2007-2008 |
Ford |
F-150 |
FX2 |
| 2005-2008 |
Ford |
F-150 |
FX4 |
| 2006-2008 |
Ford |
F-150 |
Harley-Davidson Edition |
| 2005-2008 |
Ford |
F-150 |
King Ranch |
| 2005-2008 |
Ford |
F-150 |
Lariat |
| 2008 |
Ford |
F-150 |
Limited |
| 2005-2008 |
Ford |
F-150 |
XL |
| 2005-2008 |
Ford |
F-150 |
XLT |
| 2008 |
Ford |
F-250 Super Duty |
FX4 |
| 2006-2008 |
Ford |
F-250 Super Duty |
King Ranch |
| 2006-2008 |
Ford |
F-250 Super Duty |
Lariat |
| 2006-2008 |
Ford |
F-250 Super Duty |
XL |
| 2006-2008 |
Ford |
F-250 Super Duty |
XLT |
| 2008 |
Ford |
F-350 Super Duty |
FX4 |
| 2006-2008 |
Ford |
F-350 Super Duty |
King Ranch |
| 2006-2008 |
Ford |
F-350 Super Duty |
Lariat |
| 2006-2008 |
Ford |
F-350 Super Duty |
XL |
| 2006-2008 |
Ford |
F-350 Super Duty |
XLT |
| 2005-2008 |
Ford |
Mustang |
GT |
| 2007-2008 |
Ford |
Mustang |
Shelby GT |