One of the first decisions you'll encounter when shopping for an aftermarket exhaust is determining which section of the exhaust system you actually want to replace.
Two common terms are cat-back and axle-back.
What Is a Cat-Back Exhaust?
A cat-back exhaust replaces the exhaust components located after the catalytic converters.
Depending on the vehicle, this can include piping, resonators, mufflers, valves, and exhaust tips.
Because more of the factory exhaust is replaced, cat-back systems can have a substantial impact on sound and exhaust character.
What Is an Axle-Back Exhaust?
An axle-back system generally replaces the exhaust components behind the rear axle.
This typically includes components such as the rear mufflers and exhaust tips.
Because less of the exhaust is replaced, axle-back systems can be a simpler way to change sound and appearance.
Which Should You Choose?
If you want a more comprehensive exhaust upgrade, a cat-back system is generally the more extensive option.
If you primarily want to change the rear portion of the exhaust and modify sound or appearance, an axle-back may be sufficient depending on your vehicle.
Performance Exhaust Systems
The right choice depends heavily on the vehicle.
Turbocharged cars, naturally aspirated cars, V8s, V10s, V12s, and different chassis can all respond differently to exhaust modifications.
Velocity Exhausts carries a wide range of vehicle-specific performance exhaust systems across BMW, Porsche, McLaren, Lamborghini, Ferrari, Audi, Mercedes, Corvette, Nissan, Toyota, and other platforms.
Always verify exact fitment before purchasing an exhaust system.
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