KiWAV rear master cylinder brake 5/8" bore chrome billet for Harley-Davidson oem#42453-82A 42454-82 Complete 5/8 bore rear Kelsey-style master cylinder assemblies Bolt on Installation OEM replacement (42453-82A, 42454-82) Cylinder Bore: 5/8" ,Banjo bolt 3/8" x 24 100% made in Taiwan, nice and stable quality