Upgrade your F motorcycle's performance with this precision-engineered rocker arm set designed specifically for Machismo, Thunderbird, and Leanburn models. The rocker arms play a crucial role in your engine's valve train system, translating camshaft motion into precise valve operation. This replacement set ensures smooth engine operation and optimal valve timing. Made to exact specifications for a perfect fit, these rocker arms help maintain your bike's signature performance and reliability. Each set comes complete with all necessary components for a proper installation. Keep your classic Royal running at its best with this essential engine component. Perfect for both routine maintenance and performance restoration projects.