1-3/4" Exhaust Pipes For Flathead Big Twins Use Paughco #725D clamps to install.
717B Upsweep shotgun headpipes ONLY for use with extensions or universal mufflers 727B Headpipes ONLY for use with extensions or universal mufflers 727 34"-long Slash Cut drag pipes 727A 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 rail clamps to install these pipe sets.
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