The Spoon stabilizer bar controls the amount of body roll and roll speed during hard cornering. Employs a higher rate than the factory bar for better traction performance. As a result, the car reacts in response to slip in a quick steering operation, maneuverability becomes more natural, and better straight-line stability. Includes bushing for 28mm bar. Spoon Stabilizer Bar? 28mm (40% increase over stock) FitRS OEM Bar: 25mm