- Bolt-in four-cam set
- More horsepower and torque
- Stock springs OK to 7000 rpm, requires no headwork
- Made in the U.S.A.
- Installer must check coil bind, valve-to-valve clearance, valve-to-piston clearance and cam lobe to case clearance.
Harley-Davidson -- Caf Racer XLCR -- (1977, 1978); Harley-Davidson -- Sportster 1000 XLCH -- (1979, 1973, 1977, 1974, 1978, 1976, 1972, 1975); Harley-Davidson -- Sportster 1000 XLH -- (1980, 1978, 1976, 1977, 1975, 1973, 1979, 1974, 1972); Harley-Davidson -- Roadster 1000 XLS -- (1980, 1979); Harley-Davidson -- Sportster 900 XLCH -- (1971); Harley-Davidson -- Sportster 1000 XLT -- (1978, 1977); Harley-Davidson -- Sportster 900 XLH -- (1971)