The hummer is an awesome vehicle; one of the most advanced four-wheel drive vehicles ever made. The O.E. CV joints in the Hummer are very strong. The weakest part of these CV axles is the center bar. The splines on each end of the center bar have a groove cut in them for a clip to connect to. The groove is the weak point of the CV axle. We have changed this by rolling the splines instead of the hob design. We also use a 4340 chrome-moly steel to make the center bar.
To complete your Hummer it is a must to have the best CV axles available. Some say the axles are made to break before the gears do. The desired intention is for the tires to spin and the vehicle never to break down. The axles are available assembled with the high strength center bars. If you need additional info about the axles, call Extreme Hummer in Atlanta, GA. They have installed and thoroughly tested Newfield CV Axles for the Hummer.