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Increased airflow for more horsepower
#1019 CHROME ETA MID JANUARY 2026
Extra ARP nut included in the event you are running an aftermarket swingarm and have a through hole on the right side lower shock mount
Thunderheaders are a popular pipe for a lot of reasons
RAMJET 99 - 05 DYNA THUNDERHEADER BRACKET EXHAUST_COMPONENTS Increased airflow for more horsepowerThunderheaders are a popular pipe for a lot of reasons, power gains, sound, looks and lets face it they just seem to go hand and hand with the Harley Davidson Dyna. We've been selling Thunderheader products for nearly 30 years. Since the #1026 came out for 1999' 2005' Dyna models, they've sold like crazy, but the brackets provided were notorious for breaking, and they still are after multiple revisions. Rather than spending $150+ on a replacement
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