HOT2279 / 2279 - 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 3/16" (30mm) Hollow Front 13/16" (21mm) Solid Rear Stiffness: Front 157% Stiffer than stock. Rear 175% Stiffer than stock.