Designed to fit Arlen Ness Method Fork Legs with Radial Caliper Brackets or custom Radial brake caliper brackets with 100 mm bolt pattern, Brake calipers are engineered for form and function, 3D sculptured design helps facilitate cooling incurred while braking, 4-piston Radial Brake Calipers CNC machined from billet aluminum, Each Caliper includes brake pads, bleeder screw, banjo bolt, and mounting hardware , Cooling fins are machined into the inner caliper halves help disperse heat, Extremely stiff under stress ensuring precise and consistent braking performance, Compatible with ABS & non-ABS applications, 100 mm bolt spacing , Differential bore, Black anodize finish