A-arm Kit, Upper (AAU028) And Lower (AAL401)Improve performance and eliminate A arm deflection on your 1964 1972 A Body with an A Arm Kit from BMR Suspension! Factory A arms and bushings can cause deflection, resulting in changes in alignment and reduced performance on the track and street. BMRs A arm Kit (AAK402) includes both Upper (AA028) and Lower (AAL401) A Arms and are designed for street performance, drag racing, and handling applications. When performance is a must, rely on BMR