Up for sale is a complete set of adjustable rear control arms for Mercedes Benz models -class r171 and r172 models SLK320, SLK350, SLK200, SLK230, SLK55, AMG.

These kits are fabricated locally in various shops here in the United States. The rod ends are stainless steel with Energy Suspension polyurethane bushings and alloy sleeves inserts. The heim joint for the caster arm has Teflon race and dust boots to prevent dirt and water from sticking to the ball joint. The boots are made here in Connecticut. The tie rod sleeves are brushed aluminum 6061-T6 aluminum hex tubing build for strength, durability, and precise fitting. The hexagonal rods made it easy for "on the spot" quick refine adjustment:)

The set consist of the adjustable camber arms, adjustable thrust arm, adjustable caster arms, and adjustable toe arms. Please see the last photo for reference.

#2 camber arm, #3 thrust arm, #4 caster arm #5 toe arm

These are great for correcting negative camber - when the top of the wheel is tipped in towards the body. Camber is the tilt of the wheel along its vertical axis. Running wider tires or car with lowering springs can cause this issue where your tires are wearing out on the inside. They are also great for older cars where the suspension tends to sag hence the wheel looks "spray out".  

To some degree, this is a good thing as it allows more of the tire tread to stay in contact with the ground during hard cornering. But if you have too much negative camber, which degrades cornering performance as well as hinders grip during hard acceleration.

The adjustable caster toe kit can straighten the wheels by pushing out the lower portion of the wheel something you can't do with the stock lower control arm. With the combination of the adjustable camber arm and the lower caster arm, the wheel will be aligned the way it should be and that will help minimized the inner and outer tire wear.