Forged from the highest quality steel, each torsion bar is ground to provide a constant spring rate, chemically coated to protect against rust and then matched in pair sets to ensure that both sides of the car are equally suspended. All performance products torsion bars are guaranteed for 3 years against breakage. Note: worn torsion bar bushings will shorten the life of torsion bars. Our 3-year guarantee will remain valid only when bushings are in good condition at time of installing new torsion bars. 21.6mm effective rate. Sold in pairs.