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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
6" outlet 15" length
Part Number: 817784
5 Year/50000 Mile Case Warranty
5-inch wb) GM Silverado/Sierra 4
Hooker Aero Chamber Muffler 21501HKR crew-cab 6" outlet 15" lengthOverview The raw aluminized steel Aero Chamber is designed to do much more than simply muffle exhaust noise. The Aero Chamber Muffler produces a deep throaty powerful sound that will not change with time. The Hooker Aero Chamber uses a unique step principal, similar to that which is currently popular in racing header design. The aerodynamically designed chambers flow 23% better and produce more horsepower and torque than the most popular high
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