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  1. joepublicschmoe on

    Road bike rim brake caliper.

    Lower-tier ones have the solid-block brake pads. Higher tier ones like the Shimano Ultegra BR-R8000 calipers have the nicer shoes with cartridge pad inserts.

    You probably want to clean the bike thoroughly before putting new brake calipers on.

  2. For which problem?

    I can’t see the pads too well but the calipers look gummed up with mud or concrete.

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