They provide superior strength over boxed or square arms. Installing these arms will help in many different driving conditions, including controlling lateral movement, reducing wheel hop, increased corner exit, straight line stability and more. They can be used for street, drag race, road race and autocross applications. Polyurethane bushings used on both ends of the control arm. This type of a control arm is best used for drag racing. The bushings however, limit the rear end from articulating. Many drag cars can get away with this because of the way the car is set up. If this type of arm is used on the street or road race applications the rear suspension will be placed in bind when the car goes over bumps and around corners. This is because the control arm bushings will not allow the rear end to have proper movement.
| Make | Model | Years |
| Chevrolet | Chevelle | 1964 - 1972 |
| Chevrolet | El Camino | 1964 - 1972 |
| Chevrolet | Estate | 1969 - 1970 |
| Chevrolet | Malibu | 1964 - 1967 |
| GMC | Sprint | 1971 - 1972 |
