Upgrade your engine's performance and reliability with the Kibblewhite Engine Valve Kit. This comprehensive kit provides all the necessary components for a complete valve train overhaul, ensuring optimal combustion and power delivery. Built with high-quality materials and precision engineering, the Kibblewhite valve kit offers exceptional durability and longevity for demanding riding conditions. Description The Kibblewhite Engine Valve Kit features Black Diamond™ stainless steel valves, forged from a single piece and treated with a special German process to enhance wear resistance and reduce friction. These valves are black nitride coated for increased hardness and improved sealing. The kit also includes H.T. (Heat Treated) steel valve keepers and valve stem seals (where applicable), along with a KPMI® or equivalent valve spring kit, precisely matched to the valve specifications. Designed for compatibility with both leaded and unleaded fuels, this kit provides a versatile solution for various engine applications. Enhance your engine's performance and reliability with this high-quality, Made in the USA valve kit. Precision machined valve seats guarantee optimal valve sealing, while correct spring pressures ensure proper valve control. The valve kit's comprehensive design makes for easy installation. Whether you need intake or exhaust valves, Kibblewhite has you covered. Improve your engine's performance now! Features & highlights Includes Black Diamond™ stainless steel valves for superior strength and durability. Valves are black nitride coated for enhanced wear resistance and reduced friction. Features H.T. (Heat Treated) steel valve keepers and valve stem seals for reliable performance. Includes KPMI® or equivalent valve spring kit for optimized valve train operation. Compatible with both leaded and unleaded fuels. Complete kit for one engine, simplifying the installation process. Proudly Made in the USA, ensuring top-quality craftsmanship. Technical specifications Brand: KIBBLEWHITE Vendor Part Number: 20-22350 Application: Intake, Exhaust Collar Material: H.T. Steel Head Diameter (Intake): 49.15 mm Head Diameter (Exhaust): 39.88 mm Length (Intake): 3.620" Length (Exhaust): 3.512" Material: Black Diamond™ Stainless Spring Lift: 0.400" Spring Open Pressure: 330 lb Spring Seat Pressure: 95 lb Stem Diameter (Intake): 7.85 mm Stem Diameter (Exhaust): 8.60 mm Tulip Angle (Intake): 23° Tulip Angle (Exhaust): 29° Valve Seat Height: 1.245" Units: Kit Important to know Valve stem seals included where applicable.