COMP Cams Bronze Gear FS W/MSD .500in ShOne of the first requirements when installing a Steel Roller cam is the addition of a bronze distributor Gear. A stock cast iron Gear is not compatible with a Steel Camshaft. COMP Cams Gears are machined from AMPCO 45 extruded aluminum bronze with 5% Nickel added. These Gears feature a high strength tooth design that resists wear even when used with high pressure oil pumps. These extra tough Gears are the answer when higher Mechanical properties are