48-65 Panhead, 48-52 Flathead, 66-69 FL Shovel
1-3/4" Pipe Sets For 1948 - 1969 Generator Big Twin Engines With S.T.D. Cylinder Heads In Rigid Or Swingarm Frames. These headpipe set is specifically intended for use on engines with Panhead or Shovelhead lower ends and STD cylinder heads. Because of the unique 3-bolt exhaust flange incorporated into the S.T.D. heads, they require special exhaust systems.