Extensive testing on the ball joints through Carli Suspension's product research and development cycle is now complete. We have logged thousands of nasty dirt miles over the past year to ensure that this product would be everything you have come to expect from us. These new Extreme Duty Upper Ball Joints should yield atleast 3 times the life expectancy of the O.E.M. joint. With an average labor of $500.00, the end user actually saves money the first time that they don't have to replace them.

Upper Ball Joint Break In and Use

The ball joints are designed to break in after use. Constructed out of 4130, hardened and machined again makes for a smooth surface. With any hard smooth surface, there will be pores or high spots, not visible by the eye, but under extreme magnification you will be able to detect contact points raised from the general surface plain. The 2-stage aerospace dry lubrication process fills the pores of the machined surface and after significant period of time and consistant use, the surface will burnish. The definition of Burnish means to polish by friction. This is built into the design of the assembly and accounted for in the hard dry lubricant process. After removing the pin from the assembly following our testing periods, the surface has a luster to it which is the affect of the burnishing through normal use of the product. The burnished surfaces will reduce friction and smooth out rotation even further.

Without diving into a lesson on metallurgy, what we have discovered is that the ball joints get even better over time. Still flowing Redline CV2 high performance grease combined with the 2-stage machine applied dry lubricant process, the sheer pressure of the activity that the upper ball joint is subject to allows for the burnishing process to take place and when reviewed, you can see by eye and feel by touch that the surface is smoother. Just the way it was designed to do.

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