Hooker Aero Chamber Muffler Flexplates and Parts Switch Circuit CLOSED when full

Switch Circuit CLOSED when full

Some welding is required

2001 - 2003 GMC Sierra 1500 HD

Built for the Trail

designed for the 4-door model and offering enough clearance to easily run 35-inch tires

Hooker Aero Chamber Muffler Flexplates and Parts Switch Circuit CLOSED when fullThe 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 performance brand.