Special Offers
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Thunderheader™ Shovelhead Exhaust – Chrome (70' - 83')
The Famous 1020 Model is back in production! Features Thunderheader's patented designs, the 1020 Model Fits 1970 - 1983 Shovelheads. Includes an all-new bracket, clamp, and all hardware to mount the exhaust. Heat shields sold separately....Regular price From $1,079.00Regular price From $1,079.00 -
Thunderheader™ FXR – Fits Models W/ Floorboards Only - Black (84' - 86')
The famous 1018B is back in production! With an all new bracket design, the Thunderheader™ 1018B Model Fits 1984 – 1986 FXR’s. Features 1 3/4″ head pipes to our patented megaphone muffler design. Includes an all...Regular price $999.00Regular price $999.00 -
Thunderheader™ FXR – Fits Models W/ Floorboards Only – Black (87' - 26')
The famous 1019B is back in production! With an all new bracket design, the Thunderheader™ 1019B Model Fits 1987 – UP FXRs. Features 1 3/4″ head pipes to our patented megaphone muffler design. Includes an all...Regular price $999.00Regular price $999.00 -
Thunderheader™ FXR – Fits Models W/ Forward Controls ONLY - Black (89' - 26')
The famous 1019B-FC is back in production! With an all new bracket design, the Thunderheader™ 1019B-FC Models Fits 1989 – UP FXRs. Features 1 3/4″ head pipes to our patented megaphone muffler design. Includes an all...Regular price $999.00Regular price $999.00 -
Thunderheader™ FXR – Fits Models W/ Floorboards ONLY - Chrome (84' - 86')
The famous 1018 is back in production! With an all new bracket design, the Thunderheader™ 1018 Model on the 1984 – 1986 FXR’s Features 1 3/4″ head pipes to our patented megaphone muffler design. Includes an...Regular price $1,079.00Regular price $1,079.00 -
Thunderheader™ FXR – Fits Models W/ Floorboards ONLY - Chrome (87' - 26')
The famous 1019 is back in production! With an all-new bracket design, the Thunderheader™ 1019 model Fits 1987 – 2026 FXRs. Features 1 3/4″ head pipes to our patented megaphone muffler design. Includes an all new...Regular price $1,079.00Regular price $1,079.00
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Restrictive stock mufflers choke off exhaust scavenging and muffle the raw roar of your engine. Upgrade to full performance exhaust systems and slip-on mufflers built to shed weight, increase horsepower, and deliver a loud, deep tone. Open up your exhaust flow, wake up the neighborhood, and let your motor scream.