Exhaust Pipes For Flathead Big Twins

1-3/4" Exhaust Pipes For Flathead Big TwinsUse Paughco #725D clamps to install. 717B Upsweep shotgun headpipes ONLY for use with extensions or universal mufflers727B Headpipes ONLY for use with extensions or universal mufflers727   34"-long Slash Cut drag pipes727A 34"-long Goose Cut drag pipes Special Notes:1) Drag pipes are not recommended for street use.2) See page 247 for P-clamps and frame railclamps to install these pipe sets.