The TeraFlex JK: Rzeppa High-Angle Factory Replacement CV Joint Kit replaces a worn or damaged factory Rzeppa CV joint and driveshaft without resorting to an expensive aftermarket U-joint upgrade. Allows angles up to 15 degrees. The high-angle CV housing reduces boot failure associated with 3" or more lift. The included low-friction grease is engineered specifically for the high RPM needs of the JK Rzeppa CV joint and features high-viscosity surface bonding characteristics necessary to properly adhere the grease to all moving surfaces.