HARLEY IRONHEAD REAR CYLINDER PART NO. 1129

REAR CYLINDER FITS 1973 THRU 1985 IRONHEAD SPORTSTERS.

FIRE DAM DIA= 3.400   BORE - 3.189 (STD), BUT HAS BAD GROOVES IN THE WALL AND WILL NEED BORED TO AT LEAST .040

ONE OF  THE TOP FINS IS BROKEN