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These beefy lower rear control arms replace the stock stampings, which are notoriously flimsy. "They were built to flex to allow a comfortable ride," Stuber says. Sharp handling wasn't part of the equation. Eliminating the flex in the suspension pieces will really improve the handling. Edelbrock's rear lower arms use urethane bushings at both ends and are equipped with grease fittings, allowing periodic lubrication to quell any potential squeaking.