Arlen Ness Chrome Front Dual Disc Four-Piston Calipers 2008^ Touring flh Dyna ChArlen Ness Chrome Front Dual Disc Four Piston Calipers 2008^ Touring flh Dyna Chopper Ness Tech info from ness below Arlen Ness 11. 8" 4 Piston Chrome Right & left front Brake Calipers 4 piston brake calipers CNC machined from billet aluminum Differential Bore Brake calipers are engineered for form and function, 3D sculptured design helps facilitate cooling incurred while braking Extremely stiff under stress ensuring precise and consistent braking