The effect of METALLECA® Car Chassis Suspension Aluminum Swing Arm Bracket are to prevent the rod twist when the horizontal height of the left and right wheels is different. The balance bar creates roll resistance that inhibits car body rolling. In other words, the balance bar does not work when the suspension of the left and right syncs up and down. The balance bar only works if the left and right suspensions are caused by incongruous movements because of undulating or turning over bends on the road surface. The intelligent and mechanized of automobile manufacturing industry has been rapid developed in recent years. Especially with the rise of new energy vehicles and domestic brands, the demand for auto parts will be growing in the market. In addition, the quality, price and service of the auto market will face huge challenges.