Energy suspension polyurethane bushing kits offer superior performance over stock rubber bushings, especially if they are old and cracked. Energy sway bar and control arm bushings keep handling tight and will restore and improve ride quality. The simplest, most cost effective way to improve a factory suspension. Why are some bushings red, and others black? Whats the difference? The black bushings are empregnated with a graphite material that is somewhat self lubricating, reducing the chance of squeaking even further. Most bushing kits come with lubrication to apply before installing. The bushings are exactly the same as it pertains to performance or feedback.