Semi-metallic disc brake pad set for each caliper (disc) of the rear brakes. All Goldwings have two calipers on the front wheel and one caliper on the rear wheel. SPECS: Friction Rating FF (.40 average), "Little Metallic" Type (15% copper, 3% ferric oxide, graphite, friction particle and powder), colophony bonding resin (organic), organic and mineral fibers, high friction coefficient with minimal wear, laboratory tested friction, coefficient .41 @ 150C ranging to .35 @ 300C. By Barracuda Bike Parts™.