Hooker Aero Chamber Muffler 21516HKR complete-line-kit Straight out the back for

Straight out the back for that true dual look or exiting out each side behind the rear wheels

2011-2013 Ford F-250 Super Duty 379 CID

with a moderate interior tone and the performance benefits you would expect from Flowmaster

50-inch mandrel-bent inlet pipe flowing into the 50 Series™ HD performance muffler with large 4

Hooker Aero Chamber Muffler 21516HKR complete-line-kit Straight out the back forOverview 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