Skip to content
HEAR THE DIFFERENCE, FEEL THE PERFORMANCE, GET NOTICED!
Toggle mobile menu
Save 20% on "The Book"
CEO Welcome Letter
Frequently Asked Questions
Ford & Lincoln
Ford F150 / Raptor
Ford Fiesta ST
Ford Taurus SHO
Dodge & Jeep
Dodge Ram 1500
Jeep Grand Cherokee
Scion, Subaru, & Toyota
Subaru WRX / STI
Engineer + Enthusiast = Excitement Book
Splitters & Accessories
MRT Hood Struts
MRT Exhaust Parts
Brands We Carry
Cold Air Inductions
Mantic Clutch USA
Nav Menu 2
Nav Menu 3
Nav Menu 4
Nav Menu 5
Nav Menu 6
Nav Menu 7
Nav Menu 8
14-19 Corvette C7 MRT QuadFlow Cat-Back
MRT 304 Stainless Cat-Back: 2014-2019 Corvette C7 #91S121
MRT Part# 91S121
Loudness: 9 Drone: 1 Performance: 9
2014 thru 2019 Corvette C7
Other Corvette models
: None Required
Time to Install:
Retail Price: $1,919.99
Price with Options:
Black Ops - Quad Tip Blackout [Add $200.00]
NPP / AFM
Without Recommended Plates
With Recommended Plates [Add $29.98]
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. A Black Ops tip finish is available for an additional fee (Black Ops is a high temperature ceramic coating in black matte finish). 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.
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. For more information on these plates, refer to
MRT Part #91X010
or simply add to your shopping cart before checkout.
2014 thru 2019 Corvette C7 6.2L V8 engine
Other Corvette models.
Hear the Difference
How does it sound? The MRT C7 QuadFlow Cat-Back #91S121 has a spirited, balanced, street performance sound.
Is there drone or resonance? The drone is noticeable but tolerable.
What if I step on it? Wide-open throttle increases exhaust loudness and tone to an aggressive performance sound.
91S120: 14-19 Corvette C7 MRT QuadFlow Axle-Back Review Video
91S120: 14-19 Corvette C7 MRT QuadFlow Axle-Back Sound Clip
What kind of steel is it made from? Corrosion-resistant T304 stainless steel.
Where is it made? Developed and handcrafted in-house at MRT facility in Plymouth, Michigan, USA.
How long is the Warranty? Limited Lifetime Warranty (See Warranty Page for Details)
Feel the Performance
What is the muffler design? Straight through design to provide maximum exhaust gas flow.
What is the tube diameter? A large 3" tube is used for reduced exhaust flow restrictions.
What are the performance gains? Reducing restriction and maximizing flow provides for noticeable gains.
What kind of tip is it? Quad 4"
double wall T304 stainless steel tips with beveled edges.
What are my tip finish options? Stylish Polished Stainless Steel or Black Ops Matte Ceramic.
How do I get noticed? Great sound and great looks turn heads and get positive comments!
Can I install this myself? Yes, MRT engineers this Premium Exhaust System for a simple do-it-yourself (DIY) installation.
How long does it take to install? Installation time is about 2.5 hours and requires only common hand tools.
What is included? All necessary hardware included.
DIY installation for the backyard mechanic
T304 Stainless Steel for the best corrosion resistance
Engineered, designed and manufactured in the USA
You might also like:
14-19 Corvette C7 MRT QuadFlow Axle-Back
14-19 Corvette C7 MRT MaxFlow H-Pipe
13 - 20 GM DIRECT INJECTED Vehicles
Share your knowledge of this product.
Be the first to write a review »
Back to top