HOT2280 / 2280 - Application Notes Improve cornering by reducing body roll with a set of Hotchkis Performance Sway Bars. Hotchkis bars feature lightweight hollow construction and include greasable polyurethane bushings,and are powder coated for durability. Each bar set has been tested and tuned to ensure the best performance possible. Specs: 1 1/4" (32mm) Hollow Front 1" (25mm) Solid Rear Stiffness: Front 70% Stiffer than stock. Rear 90% Stiffer than stock.