Part Number: 23-9177 Application: 1987-1994 FXR1987-2021 FXST1992-2007 FLT1987-2003 XL1991-2017 FXD1987-2021 FLSTNote: Late 1987 Details:Rear master cylinder and piston assembled. Use with DOT 5 brake fluid.UOM: KIT Country of Origin: JAPAN