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Home > Products > Exhaust > Knuckleheads > Squish Exhaust Systems
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photo of 40"-long slashcut over-the-transmission drag pipes for knucklehead big twins

1¾" Over-The-Transmission ‘S’ Pipe
Staggered Duals For 1936-1947 Knuckleheads

These 3-piece complete exhaust systems feature an inside-the-frame front ‘squish’ pipe, and an over-the-transmission rear pipe to blend nostalgic and contemporary looks on your rigid framed 1936–1947 Knucklehead. The muffler sets have slider channels on the front and rear pipes, and the drag pipes have one on the rear pipe only. A Paughco #523-3 mounting clamp is included with the muffler sets.

711-40 40"-long Slash Cut drag pipes  $159.95
711M 38"-long Slash Cut muffler set  $277.95
711GM 38"-long Goose Cut muffler set  $277.95
711TM 38"-long Tapered muffler set  $277.95
429CR Rear heat shield for Paughco #711 series pipe sets (not shown)  $80.95

Click part number to add to Shopping Cart

photo of alternate styles of complete exhaust systems for knucklehead big twins
Also Available In These Styles
on bike photo of 40"-long slashcut over-the-transmission drag pipes for knucklehead big twins
 
photo of 40"-long slashcut shotgun drag pipes for knucklehead big twins

1¾" Shotgun ‘S’ Pipe Exhaust Systems For 1936-1947 Knuckleheads

Choose from four 3-piece drag pipe and muffled exhaust systems for rigid frames. All of these complete exhaust systems have slider channels, and a Paughco #523-3 hanger clamp is included with each set (except the drag pipes). Heat shields are recommended for the rear pipes.

711D40 40"-long Slash Cut drag pipes  $159.95
711DM 38"-long Slash Cut muffler set  $277.95
711DGM 38"-long Goose Cut muffler set  $277.95
711DTM 38"-long Tapered muffler set  $277.95
411BR Rear heat shield for Paughco #711D series pipe sets (shown on bike)  $80.95

Click part number to add to Shopping Cart

photo of alternate styles of complete exhaust systems for knucklehead big twins
Also Available In These Styles
on bike photo of 40"-long slashcut shotgun drag pipes for knucklehead big twins
 
photo of upsweep goose cut drag pipes for knucklehead big twins

1¾" Upsweep ‘S’ Pipe 3-Piece Drag Pipes For 1936-1947 Knuckleheads

An inside-the-frame front ‘squish’ pipe, and an ‘Over The Transmission’ upsweep rear pipe, blend traditional and Chopper looks. The rear pipe turns up to follow the bottom frame rail on 1936–1947 rigid frames, and will work with electric start wraparound oil tanks. All of these drag pipe sets include a Paughco #718-9 mounting hardware kit.

714BA Goose Cut drag pipes  $277.95
714BS Slash Cut drag pipes  $277.95
714BST Straight Cut drag pipes  $277.95
414B1R Rear heat shield for Paughco #714B
pipe sets (shown on bike) 
$80.95

Click part number to add to Shopping Cart

photo of alternate styles of complete exhaust systems for knucklehead big twins
Also Available In These Styles
on bike photo of upsweep goose cut drag pipes for knucklehead big twins
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Paughco.com - Your Source for Harley-Davidson® Parts and Accessories
Use of the word Harley-Davidson, various model names and designations, and
OEM part numbers, are provided solely for reference and application information,
and there is no affiliation between Harley-Davidson, Inc. and Paughco, Inc.
Paughco sells Chopper parts, and aftermarket parts and accessories for Harley-Davidson,
Victory, Sportster, Fat Bob, Hydra-Glide, Duo-Glide, Electra Glide, Road Glide, Street Glide,
Super Glide, Tour Glide, Dyna Glide, Dyna Wide Glide, Road King, Softail, Fat Boy,
Heritage Softail, Springer Softail, Low Rider, 45, Flathead, Knucklehead, Panhead, Shovelhead,
Evolution, Blockhead and Twin Cam motorcycles. We also sell Bagger-Werx, Yankee Engineuity,
La Rosa Design, SAS, and Performance Machine parts for your Harley-Davidson® motorcycle
.