GZP Boot, rear master cylinder #41764-70

Complete replacement 3/4" bore rear master cylinder assembly to fit Big Twin models with hydraulic rear drum brakes such as FL models from 1958 thru 1972 or FX models from 1971 thru 1972, and rear disc brake applications on FL and FX models from 1973 thru early 1979. The master cylinders are available in Ball Burnished finish as well as a beautiful show chrome finish.