45”/750 cc & Singles
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The GasBox Twin Tube Mufflers
Top quality reproduction of the distinctive Twin Tube muffler as originally ... more
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The GasBox Fishtail Seamed Mufflers
Very authentic reproductions of the original mufflers with correct details like ... more
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The GasBox 1934 Upsweep Mufflers
Nice reproduction of the 1934 only muffler with upswept tail section. Custom ... more
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The GasBox WRTT Racer Mufflers
Standard equipment on the Flathead street racing model, the WRTT. Actually not ... more
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The GasBox WR Turn-Out Tubes
Turn-out end piece which was original equipment on WR factory competition ... more
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Fishtail Mufflers
Reproduction of the original sytle exhaust muffler as used on 750cc Servi-Cars ... more