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The Alcon Pro-System high-performance brake pad for AP, Brembo and Alcon 4-piston calipers (H21) identifies the correct H21 pad outline for those caliper families. It clarifies intended use by specifying the 4-piston application and pad shape so technicians and owners can select the right replacement pad geometry when servicing Pro-System, AP or Brembo braking setups.
Alcon Pro-System AP/Brembo/Alcon Pro-System 4 Piston H21
