Skip to content
HEAR THE DIFFERENCE, FEEL THE PERFORMANCE, GET NOTICED!
Toggle mobile menu
Need more time to pay?
Check out with PayPal & choose PayPal Credit!
Exhaust By Vehicle
Ford F150 / Raptor
Ford Fiesta ST
2015 - 2020 Ford Mustang Exhaust
2005 - 2014 Ford Mustang Exhaust
1994 - 2004 Ford Mustang Exhaust
1979 - 1993 Ford Mustang Exhaust
1965 - 1973 Ford Mustang Exhaust
Ford Taurus SHO
2014 - 2016 Chevy SS Exhaust
Dodge Ram 1500
Jeep Grand Cherokee
Subaru WRX / STI
MRT Hood Struts
MRT Exhaust Parts
Window Louvers & Replacement Parts
Splitters & Accessories
Email MRT Gift Certificates
Engineer + Enthusiast = Excitement Book
Brands We Carry
Cold Air Inductions
Mantic Clutch USA
Frequently Asked Questions
CEO Welcome Letter
MRT Exhaust Limited Lifetime Warranty
Nav Menu 2
Nav Menu 3
Nav Menu 4
Nav Menu 5
Nav Menu 6
Nav Menu 7
2018+ Jeep Wrangler 3.6L MRT Off The Grid JL Axle-Back
MRT 304 Stainless Axle-back: 2018+ Jeep Wrangler 2&4 Door #90R137
MRT Part# 90R137
Loudness: 9 Drone: 3 Performance: 8
2018 thru 2021 Wrangler JL 2&4 Door 3.6L
: None Required
Time to Install:
Retail Price: $215.99
Polished T304 SS Tips - Standard
The MRT Wrangler 3.6L Off The Grid JL Axle-Back system has a loud, deep muscle car sound and is handcrafted in corrosion resistant T304 Stainless Steel. Base systems include T304 polished SS 2.5" mandrel bent tube. There is a Turndown tip on this system for optimal ground clearance. This system is engineered for the best sound to match your Jeep and provides increased performance from increased exhaust flow. It was designed with off-roading in mind.
Off The Grid
is the loudest MRT exhaust
with enough elevated sound to Get Noticed, plenty of opportunity to Feel the Performance and packaged in a design without excessive drone.
2018 thru 2021 Wrangler 3.6L,
2 and 4 Door.
Hear the Difference
How does it sound? The MRT Wrangler Off The Grid JL Axle-Back #90R137 has a loud, deep muscle 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.
Are you located close to Plymouth, MI and need your MRT aftermarket exhaust installed? Call MRT at 734-455-5807 to make an appointment today!
90R137: 2018+ Jeep Wrangler 3.6L MRT Off The Grid JL Axle-Back Performance Exhaust System- Review Video
90R137: 2018+ Jeep Wrangler 3.6L MRT Off The Grid JL Axle-Back Performance Exhaust System- 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 2.5" 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? No Tips. Turn down 2.5" T304 SS pipe for optimal off-road ground clearance.
What are my tip finish options? None,there arent any tips on this system.
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 1 hour and requires only common hand tools.
What is included? All necessary hardware included.
Note: No products will be accepted for return after installation has occurred.
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:
2018+ Jeep Wrangler 3.6L MRT Version 3 JL2 Axle-Back
2018+ Jeep Wrangler 3.6L MRT Version 3 JL4 Axle-Back
Share your knowledge of this product.
Be the first to write a review »
Back to top