Hotchkis Tuning Sport Sway bars improve your handling and reduce body roll. Turn in with confidence and late brake in the corners with our track tested lightweight hollow sway bars. Sway bar sets include front and rear bars, greasable bushings, and brackets. Front 1 1/8" Hollow. Rear 1/2". Note: Rear bar is a add on bar and is designed to work in conjunction with factory rear bar.