18023-87 Extreme Duty Valves

If you are building a high-performance engine for a Sportster, Buell tube frame, or XB model, these AV&V Extreme Duty valves are a serious step up from stock. Replacing OEM part 18023-87, these valves are one-piece forged from racing-grade stainless steel and treated with a liquid nitriding process. This black nitride coating makes the valve surface significantly smoother and stronger than standard replacements. The stems are centerless ground to a micro finish to ensure a long service life, and the 45-degree angle below the lock groove helps you seat the valve seals without a struggle. They are designed to handle the heat and stress of aggressive riding on RS, Single, Sportster, Tube frame, and XB applications.