Drag Pipes For 1948 - 1969 Generator Big Twin Engines With S.T.D. Cylinder Heads In Rigid Or Swingarm Frames axles and accessories 731D1GM and 731D1TM pipe sets

731D1GM and 731D1TM pipe sets (shown on bike)

The front pulley has the correct taper for the 45" engine shaft

724D1M 38"-long Slash Cut muffler set_

Two styles to choose from including a redux of the ‘Old School’ Bell Tip trumpet mufflers

They fit both mid-control and forward control models

Drag Pipes For 1948 - 1969 Generator Big Twin Engines With S.T.D. Cylinder Heads In Rigid Or Swingarm Frames axles and accessories 731D1GM and 731D1TM pipe sets1. 3 4 Drag Pipes For 1948 1969 Generator Big Twin Engines With S. T. D. Cylinder Heads In Rigid Or Swingarm Frames These 40" long Slash Cut drag pipes are 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. We have taken some of our most popular drag pipe sets for 19481969 rigid and