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1-3/4" Staggered Dual Exhaust Systems For 1936-1947 Knuckleheads
An outside-the-frame front pipe, and a rear pipe that routes in front of the transmission, guarantee classic style and a throaty sound. These muffler systems have slider channels, and will fit all 1936 – 1947 Knucklehead engines.


729GM 38"-long Goose Cut muffler set
729M    38"-long Slash Cut muffler set
729TM  38"-long Tapered muffler set
429R     Rear heat shield for Paughco #729 series pipe sets (not shown)

Special Notes:
1) These pipes have less ground clearance than original equipment and may scrape on hard right hand turns. Do not use these pipes unless the front end is extended at least 4" longer than stock or serious injury may result.
2) See page 247 for P-clamps and frame rail clamps to install these pipe sets.
3) See pages 349-353 for photos of the heat shields for these pipe sets.

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PART #
Prop 65 Warning +

California Proposition 65 Warning WARNING: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov.

Shipping Information +

Items in stock will be dispatched within 2 business days. Once shipped, you will receive an order confirmation email with a tracking number. For items *built to order, shipping times may vary. To inquire about specific shipping times for custom orders or for products you are interested in, please contact us at info@paughco.com or call 1-800-426-2621. *Built-to-order items include Frames, Springers, Gas Tanks, Oil Tanks, Trike Products, and any product currently out of stock. If an item you've ordered is on backorder, you will be notified within 2 business days of placing your order.