Seller notes

Description Racing Beat has developed the "Cutting Edge" in Miata header technology, utilizing both chassis dyno and road testing. Their headers incorporate a tuned 4 into 1 configuration to optimize exhaust gas scavenging and power output, while improving exhaust note. Hundreds of development hours and over 200 hours on the dyno were used in the refinement of this header. The Racing Beat 4:1 header has been tuned to provide horsepower and torque improvements throughout the entire RPM range. Equ...

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