Upgrade your engine's performance and reliability with the Kibblewhite Engine Valve Kit. This comprehensive kit provides everything you need for a complete valve overhaul, ensuring optimal engine function and longevity. Designed for enthusiasts and professionals alike, this kit delivers superior quality and performance. Description The Kibblewhite Engine Valve Kit features Black Diamond™ stainless steel valves, known for their exceptional strength and wear resistance. These one-piece forged valves undergo a special German treatment that further enhances their durability and reduces friction. The black nitride coating provides added protection against wear and corrosion. This kit also includes H.T. (Heat Treated) steel valve keepers and valve stem seals (where applicable), ensuring a complete and reliable valve train solution. Suitable for both leaded and unleaded fuels, this kit is a versatile upgrade for a wide range of engine applications. Made in the USA, this kit guarantees quality and precision. Features & highlights Includes KPMI® or equivalent valve spring kit for optimized valve control. Features Black Diamond™ stainless steel valves for superior strength and wear resistance. Black nitride coated valves provide enhanced protection against wear and corrosion. H.T. (Heat Treated) steel valve keepers ensure secure and reliable valve retention. Compatible with both leaded and unleaded fuels for versatile use. Sold as a complete kit for one engine, simplifying the installation process. Made in the USA, guaranteeing quality and precision. Technical specifications Brand: KIBBLEWHITE Vendor Part Number: 20-22550 Application: Intake, Exhaust Collar Material: H.T. Steel Head Diameter: Intake 49.53 mm, Exhaust 44.45 mm Length: Intake 3.885", Exhaust 3.810" Material: Black Diamond™ Stainless Spring Lift: 0.415" Spring Open Pressure: 272 lb Spring Seat Pressure: 129 lb Stem Diameter: Intake 9.60 mm, Exhaust 9.60 mm Tulip Angle: Intake 23°, Exhaust 29° Valve Seat Height: 1.375" Important to know Valve stem seals are included where applicable. Ensure compatibility with your specific engine application before installation.