These sway bars were tuned by Corvette racer Johnny O'Connell himself for aFe Suspension, combining his professional driving skills and the engineering expertise of aFe. These kits a CNC-bent, 4130 chromoly 35MM front bar and a 3-way adjustable rear bar in Johnny O's signature yellow. Also d are polyurethane bushings, heavy-duty 1/2 in. rod end links, and articulation spacers. To improve your car, you don't have to be a race car driver. Optimize your Vette's handling with added control and smoother, faster cornering. Sway bars from aFe will have you running just as masterfully at the track as they will around town.