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45”/750 cc & Singles
Shop Exhaust Mufflers Mufflers OEM Replacement
45”/750 cc & Singles

45”/750 cc & Singles

The GasBox Twin Tube Mufflers
The GasBox Twin Tube Mufflers
Top quality reproduction of the distinctive Twin Tube muffler as originally used on 1930 D-model 45”/750 cc sidevalve twins and 1930-1934 singles. Complete with its clamps.
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The GasBox Fishtail Mufflers
The GasBox Fishtail Mufflers
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Samwel WLA/WLC Fishtail Mufflers
Samwel WLA/WLC Fishtail Mufflers
Shortened version of the civilian muffler for 45 cuin Harley-Davidson models. This part is a reproduction of the muffler used in the first half of the 1940s. The coating primarily serves as corrosion protection and should be renewed from time to time. If a permanent black finish is desired, thermal spraying should be considered.
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The GasBox Straight Mufflers
The GasBox Straight Mufflers
This 26-inch straight muffler fits Harley-Davidson Panhead models from 1950 to 1957. These mufflers are also known as “Cigar” mufflers due to their shape, which strongly resembles a cigar. They are manufactured in the USA and closely follow the original exhaust systems found on classic Harley-Davidsons, making them ideal for an authentic restoration of your Harley.
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The GasBox WRTT Racer Mufflers
The GasBox WRTT Racer Mufflers
Standard equipment on the Flathead street racing model, the WRTT. Actually not a muffler because it has no restriction whatsoever and is therefore allowed for use on racetracks only.
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The GasBox WR Turn-Out Pipes
The GasBox WR Turn-Out Pipes
Turn-out end piece which was original equipment on WR factory competition models. Fits all 1-1/2” head pipes of 45 cui. models. Guaranteed to have no muffler effect.
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Servi-Car Fishtail Mufflers
Servi-Car Fishtail Mufflers
This authentic reproduction muffler for 1938-1950 Servi-Cars features the shortened fishtail version which stands upright and large outer diameter muffler. Correct for 1938-1950 model years, but will also fit 1935-1937 model years as well as 1951-1973.
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Mufflers for small twins and singles

The first 750cc twin cylinders from Harley-Davidson shared many components with the single-cylinder model series of the same time, including the twin-tube silencer from 1930 with a 1-1/2" connection, which the factory used in response to increased noise levels. Later on the small Twins retained the smaller pipe diameter, so that the silencers of the different model years remained interchangeable. W&W Cycles offers the complete range of original replacement silencers as reproductions from Samwel or The GasBox.

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Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com