Calmini high performance torsion bars are the solution to a soft front suspension that sags or bars that just won't hold ride height any longer. The larger diameter bar has a 20% heavier rate than stock and requires a lower preload which results in superior ride quality over stock. These are the same bars included in the CALMINI suspension system and are a must have for lifted Frontier trucks and for trucks equipped with heavy front bumpers and winches. Sold as a pair and powdercoated in signature CALMINI blue.