Agency Power® AP-996-170 - 321 SS Cat-Back Exhaust System with Split Rear Exit

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Product Details

321 SS Cat-Back Exhaust System with Split Rear Exit by Agency Power®. Adds over 10 wheel horsepower, saves almost 15lbs over the factory mufflers. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 321 SS. Exhaust System Sound: Aggressive / Loud. Porsche owners desire an exotic sports car sound with improved power. When you bolt on the AP Mufflers, you get better throttle response. with the reduced restriction. The car will scream at the high RPM, yet have no droning sound while at cruising speeds. The Agency Power muffler kit is made from 321 stainless steel.


  • Factory tips and aftermarket tips can be used with this system. It fits with all factory hangers and mounts up to the factory or aftermarket cat pipes
  • Remember to check your local and state laws regarding vehicle noise restrictions


Exhaust System Type: Cat-Back
Exhaust Tubing Material: 321 SS
Exhaust System Sound: Aggressive / Loud
Finish: Polished
Exhaust Inlet Connection Type: Bolt-On


  • Adds extra horsepower and torque
  • Produces a deep, powerful sound
  • Made of high-strength steel
  • Fits to the factory exhaust hangers
  • Backed by a limited lifetime warranty

Not only will this exhaust give you more power through the already amazing powerband, but because of the material used, it will save you a large amount of weight off the rear end of the vehicle. This will give you a better power to weight ratio, which makes your car that much quicker in handling, off the line acceleration, and stopping distance.

Agency Power® Industries LLC was founded in 2003 in Gilbert, Arizona. It is committed to developing and engineering quality, functional, and innovative racing parts and accessories for the aftermarket. Agency Power proves its parts on a dynamometer and in track competition to make sure they will perform at their maximum potential and stand the test of time. Agency Power has pioneered a number of products that hit the industry and are unrivaled by competitors. With an endeavor to become one of the leading performance parts manufacturers, Agency Power puts heart and soul into creating top-of-the-line upgrades that respond to the challenges of the rapidly developing automotive market.

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Vehicle Fitment

911 Series 1999-2004


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Agency Power® AP-996-170 - 321 SS Cat-Back Exhaust System with Split Rear Exit

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