ARMYTRIX Stainless Steel Valvetronic Catback Exhaust System Quad Blue Coated Tips Audi A4 | A5 B8 08-15


SKU: AT-AUB84-QS11B Categories: , , , Product ID: 9841


This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.
Purchasing this product requires you to sign our Vehicle Compliance Waiver here.

Enhance your Audi A4 by adding the ARMYTRIX Super Sport Stainless Steel Exhaust System. This system will increase power, reduce weight, and improve sound. This precision-made performance system delivers more power, especially in the low and mid rev range, the effect on the sound is significant, adding a deep resonant sporty sound, but at the same time neutralizes the annoying frequencies in the most critical rpm range. Complete the look with a set of four sporty chrome polished silver tailpipes.

ARMYTRIX exhaust systems differ from other brand’ exhaust systems with their unique “Throttle Pedal Sensor and Engine RPM Signal Auto Functions”. Through this system ARMYTRIX offers car owners a better launch-start without losing backpressure by automatically closing the valves at low rpm. When your car is driving at high speeds, the valves will automatically open to increase air flow for better performance (hp & torque gained) and sound. Car owners can set their own timing for valves to automatically open and close by engine rpm and how deep they press the gas pedal. It’ a new innovative system that brings your car to a different level. With the ARMYTRIX you are not getting just an exhaust system, you are getting a driving system unlike any you have experienced before.

When car owners turn on the race mode (valves opened), the gas goes through the section of straight pipes. This is where you get the incredible race sound and performance gain. In full throttle and it’ straight pipe all the way, which means you will be expecting the LOUDEST sound performance you’ ever hear!


  • Front pipe
  • Mid pipe
  • Valvetronic mufflers
  • Tail pipe
  • Remote control module


  • Stainless Steel
  • Quattro Tips
  • 3 Mode Valve System to control exhaust sound
  • Horse Power Increase: 15.3 HP
  • Torque Increase: 17.4 Torque
  • Weight: -4.8kg
  • Download Install Instructions

AUB8S Fitment:

  • Audi A4 1.8 TFSI B8 08-15
  • Audi A4 2.0 TFSI B8 08-11
  • Audi A4 Quattro 1.8 TFSI B8 08-15
  • Audi A4 Quattro 2.0 TFSI B8 08-15
  • Audi A4 Avant 1.8 TFSI B8 08-15
  • Audi A4 Avant 2.0 TFSI B8 08-11
  • Audi A4 Avant Quattro 1.8 TFSI B8 08-15
  • Audi A4 Avant Quattro 2.0 TFSI B8 08-15
  • Audi A5 Sportback 1.8 TFSI B8 08-15
  • Audi A5 Sportback 2.0 TFSI B8 08-15
  • Audi A5 Sportback 2.0 TFSI Quattro B8 08-15


  • Images are for representation only. Actual Product may vary.
  • Quattro Rear Bumper is REQUIRED.
  • ARMYTRIX wireless valvetronic wiring is a plug-and-play system, no cutting, alteration or damage will be done to the factory settings.

Additional information

Weight100 lbs