Part Description
Fits 3/4" bore master cylinder on 1973-1981 Sportster, 1973-1981 FX & 1972-1981 FL, Rebuild kit, Daytona International (OEM 45063-72)
Text excerpt from the catalog:
Complete repair kits for stock style brake master cylinders include all internal parts needed for a complete rebuild. Can be used with DOT 3, DOT 4 or DOT 5 brake fluid but you should always stay with the same brake fluid type as the three types are chemically incompatible. Bore size is usually indicated on the underside of the master cylinder.
