71010-8 KPMI, custom valve guide seals. Viton

These Kibblewhite valve guide seals are crafted from solid Viton rubber, reinforced with a metal jacket and a choker spring to ensure they stay seated under high RPMs. Sized for a 5/16-inch valve stem and a 0.420-inch valve guide diameter, they are a perfect fit for many custom Harley-Davidson engine configurations. The Viton material offers exceptional heat resistance and durability, which is critical for air-cooled V-twins. With an outside diameter of 0.566 inches and a length of 0.412 inches, these seals provide a compact and effective solution for oil control in the cylinder head. Kibblewhite is known for producing components that meet the highest standards of the custom motorcycle industry. These seals are sold as a set of eight.