Rear Brake Master Cylinder Rebuild Kit. Fits FLH 1979-1984, FX 1979-1982 & Sportster 1979-1981.

Fitment Details:-

* Fits FL 1979-1984.

* Fits FLT 1980-1982.

* Fits FX 1979-1982.

* Fits FXWG 1980-Early 1982

* Fits Sportster 1979-1981

* Kelsey Hayes Style

Features & Benefits:-

* 3/4″ Bore

* Replaces OEM # 42374-77B

MFR PART No: 11639
ROLLIES PART No: DAY-11639