RCV Performance Products Ultimate 300M CV Axles for Dana 60 were designed at the request of champion off road racers. These are the folks that run crazy power, catch lots of air, and stay on the throttle until something pops. They wanted the smoothness of RCV Ultimate CV axles with additional strength to handle major league abuse. RCV came to their rescue with Ultimate CV Axles made from 300M alloy steel. RCV Ultimate 300M CV Axles easily replace universal jointed front axle shafts, and turn a Dana 60 into an animal. The CV joint design eliminates u-joint binding, so power can be smoothly put to the ground during technical maneuvers. It gets rid of steering wheel shimmy too. The axles are just as tough at a straight angle as they are at extreme angles – where u-jointed axles are at their weakest. Keeping all this strength and smoothness protected is RCV's patented Spherical Sealing Technology which provides much greater resistance to punctures and tears than a rubber CV boot. Ultimate 300M CV Axles are backed with a "No Questions Asked" limited lifetime warranty. Join the RCV Revolution, and put the power down with confidence!