Knucklebusters.us is an online business dealing with used auto parts. Through first hand experience I will urge the consumer to BEWARE...They do not stand behind their products. Their warranty means nothing because they will not honor it. The people who work there are rude and unprofessional.There are many other online dealers for used auto parts...I suggest you surf elsewhere as Knucklebusters is nothing but a Wipe-Out!!! read full review »