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Thunderheader FXR
Patented Anti-Reversion design that produces maximum HP without sacrificing low end torque. Complete with all hardware needed to mount. Heat shields sold separately (set of 3 part #1126 or 1131b)
Current lead time is up to 16 weeks on all Thunderheader Racing Products, we do not stock them.
Race waiver needed for California customers (Click Link to Access)
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