Manufactured in the U.S. using only high-strength chromoly materials, RCV Performance Ultimate CV Axle set simply replaces your weak Range Rover axle shafts with a new high-strength design. Tests prove Ultimate CV Axles to be twice as strong as OEM shafts, and they're just as tough at a straight angle as they are at extreme angles. Even if you have big tires and big power there are no worries. Ultimate CV Axles are low maintenance and operate with a smoothness you can feel - whether off road or on the street. And we back it all with a "No Questions Asked" limited lifetime warranty.