CV Front Driveline Kit For 4-Inch 7-Inch 10-Inch Lifts On 2020-2021 GMC/Chevy Sierra/Silverado 2500HD/3500HD Duramax. This direct bolt in driveline features a 1310 series double cardan CV and it is made in the USA. Details: Complete direct bolt in CV driveline 1310 series u-joint double cardan CV 1330 u-joint at differential Lift Height: 4-Inch,7-Inch and 10-Inch Made in the USA