MRT 3" QuadFlow Cat-Back Exhaust System, 4" Quad Polished Tips 2014-2019 C7 Corvette

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Frequently bought together:


  • System Type: Cat-Back
  • Tip Size: 4"
  • Tip Finish: Polished
  • Tip Style: Double Wall
  • Tip Quantity: 4
  • System Material: 304 Stainless Steel
  • Pipe Diameter: 3"

The MRT Corvette C7 QuadFlow Cat-Back system has a loud, deep muscle car sound and is handcrafted entirely in corrosion resistant T304 Stainless Steel. Base systems include T304 polished SS 4" tips and 3" mandrel bent tube. This system is engineered for the best sound to provide your Corvette with the perfect balance of performance sound in spirited driving - comfortable in highway driving and managed sound at low speed and idle. This exhaust variant has straight through design with the loudest exhaust note, versus the stock exhaust. This Cat-Back exhaust will give you improved performance and sound with minimal drone as well.


AFM / NPP Power Plate
For Corvette customers with factory installed AFM / NPP devices, MRT offers and recommends a simple solution that allows you to upgrade your exhaust system without having to develop a tune to defeat the AFM. Plates are available to add on the right. Click HERE to view more information about the power plates. 1 Plate is required for EACH AFM / NPP valve. Most V8 systems will require 2 plates and 2 plates will be added to order, if chosen to purchase.

Hear the Difference

  • The MRT C7 QuadFlow Cat-Back #91S121 has a spirited, balanced, street performance sound
  • Slight drone is noticeable but tolerable
  • Wide-open throttle increases exhaust loudness and tone to an aggressive performance sound

Installation PDF (opens in new tab): Click HERE

Part Number: 91S121

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Warranty Information
Warranty PDF (opens in new tab): Click HERE
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