Thunderheader
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Thunderheader Exhaust Systems first struck down in 1989 and instantly stood out from the crowd due to its distinguished sound. Patented in 1992, Thunderhead Exhaust Systems feature a collector design that delivers an unprecedented style to all Harleys who dare to weather them. Thunderheader head pipes are tuned to the correct length and diameter to create the highest horsepower levels possible as well as an incredible torque curve. Like a powerful clap of thunder, these exhaust systems will produce a power, torque, and sound that will shake you up on your next Harley ride.