Excellent replacement Rocker arms for engine rebuilds with a stock or High Energy Camshaftâ„¢Help to eliminate noise and slop associated with worn or high mileage stock Rocker armsInclude adjusting nuts and pivot balls where requiredFeature a long slot for higher than stock lift CamshaftsNitrided Rocker arms designed for higher spring pressures and hardened PushrodsNitriding increases hardness, improving durability and longevity