Quadratec Axle Back Exhaust for 18-26 Jeep Wrangler JL with 3.6L or 2.0L Engine
Quadratec Part #:
17613-2020
MSRP
$599.99
Discount
-$100.00
In Cart Price
$499.99
Guaranteed Best Price
$499.99
In Stock
Ships today if you order within 11 hours 48 min.
Hear it in action
Description
Aggressive Exhaust Note: Straight-through design features stainless steel mesh wrap that delivers a smooth, deep exhaust tone.
Upgraded Style: Dual exhaust tips offer a clean and upgraded look to the back of your Jeep.
Durable 409 Stainless Steel: Hi-temp black paint ensures long-lasting durability that is sure to hold up in any climate.
Exhaust Tip Size: 4 Inch Outside Diameter
Note: Does not fit with 392 or Diesel vehicles.
Popular Similar Items
Details
The Quadratec Axle Back Exhaust for Jeep Wrangler JL is a great way to add some extra power and character to your vehicle. Engineered to make performance gains in horsepower and torque with an amazingly smooth, deep tone. This Dual Axle-Back Exhaust is easy to install and is an all-welded mandrel-bent design that has been powder coat painted Black for long life and great looks. The stainless-steel base construction and lap-joint welded construction provide rugged reliability even in extreme conditions. The straight-through perforated stainless-steel core with stainless mesh wrap and acoustical fiber fill delivers that smooth, deep tone that Jeep® enthusiasts love. Each Axle-Back Exhaust has been custom designed for Jeep Wranglers tucking the exhaust up higher than other standard models to avoid contact with trail obstacles. When used with a factory rear bumper, exhaust tips have a straight parallel rake. Due to the low profile, and high tuck, the dual tip rake on steel bumpers is slightly tilted down. Built by Jeep Enthusiasts for Jeep Enthusiasts!
Note: Does not with 392 or Diesel models.
- Color: Black
- Shipping Weight: 31lb
- Shipping Dimensions: 34in x 30in x 12in (L x W x H)
Jeep Wrangler 2-Door (JL)
- 2026 Jeep Wrangler 2-Door (JL)
- 2025 Jeep Wrangler 2-Door (JL)
- 2024 Jeep Wrangler 2-Door (JL)
- 2023 Jeep Wrangler 2-Door (JL)
- 2022 Jeep Wrangler 2-Door (JL)
- 2021 Jeep Wrangler 2-Door (JL)
- 2020 Jeep Wrangler 2-Door (JL)
- 2019 Jeep Wrangler 2-Door (JL)
- 2018 Jeep Wrangler 2-Door (JL)
Jeep Wrangler Unlimited 4-Door (JL)
- 2026 Jeep Wrangler Unlimited 4-Door (JL)
- 2025 Jeep Wrangler Unlimited 4-Door (JL)
- 2024 Jeep Wrangler Unlimited 4-Door (JL)
- 2023 Jeep Wrangler Unlimited 4-Door (JL)
- 2022 Jeep Wrangler Unlimited 4-Door (JL)
- 2021 Jeep Wrangler Unlimited 4-Door (JL)
- 2020 Jeep Wrangler Unlimited 4-Door (JL)
- 2019 Jeep Wrangler Unlimited 4-Door (JL)
- 2018 Jeep Wrangler Unlimited 4-Door (JL)
Share Your Thoughts
- Shared By Others
- Share a Photo
- Ask a Question
- Write a Review
Quadratec Axle Back Exhaust Reviews
Tracie G.
7/6/2026
Not only is it aesthetically sexy, the low rumble & purr that comes from that initial start up (and every one after), is a sound I welcome on every drive. It sounds so good. Just the right amount of "attitude" with a very reasonable price point to replace the stock exhaust. The directions state that you can keep the stock exhaust hangers, however when we tried to do that, we realized quickly that the exhaust tips would be pulled too tight to the body and rub on my bumper, therefore we utilized the ones that came with the exhaust and it was a perfect match! You do have to get used to the new "in cabin sound' that comes with the purr, but I welcome it! I am incredibly pleased with this upgrade.
Daniel R.
5/9/2026
It has a great sound to it took about 2 hours to install
Michael S.
8/6/2025
Easy install once the old exhaust was removed.
Questions
Steve M.
I read a few reviews complaining of drone around 2K rpms. Is it possible that it drones with the 2.0 but not so much with the 3.6? Thank you.
Yes, it is highly possible—and actually a very common phenomenon—for the exact same axle-back exhaust system to exhibit a more noticeable or harsher drone on the 2.0L turbocharged engine than on the 3.6L naturally aspirated V6.
While both engines share the same exhaust routing out the back of the Wrangler JL, the difference in drone characteristics around the 2,000 RPM mark comes down to fundamental differences in engine architecture, acoustic frequencies, and how the transmission behaves.
1. Four-Cylinder vs. Six-Cylinder Sound Waves
The 3.6L V6 produces a smoother, higher-frequency exhaust note because it fires six times per two engine revolutions. This creates a more continuous stream of smaller sound pulses that are easier for a standard muffler to damp out.
The 2.0L Turbo, as an inline-four, fires only four times per two revolutions. This creates lower-frequency, higher-amplitude (punchier) sound pulses. Low-frequency sound waves carry more physical energy and are the primary culprit behind cabin "drone"—the resonance that matches the natural vibration frequency of the Jeep's interior panels.
2. Turbocharger Dynamics and Backpressure
A turbocharger acts as a natural muffler right at the exhaust manifold, chopping up sound waves before they hit the downpipe. However, because the turbo creates different backpressure characteristics, it alters the sound frequencies that travel down the line. When you open up the rear section with a high-flow axle-back exhaust, the raw, unrefined four-cylinder acoustic signature becomes much louder.
3. Real-World Driving Behavior at 2,000 RPM
The 2,000 RPM range is a critical spot for both engines, but they handle load differently:
The 2.0L Turbo relies heavily on boost to make its low-end torque. When you are cruising on the highway at 2,000 RPM and hit a slight incline, the engine goes under load and builds boost before deciding to downshift. An engine under boost puts out significantly more exhaust volume and pressure, which exacerbates drone at that exact engine speed.
The 3.6L V6 makes its power more linearly. At 2,000 RPM, it is running purely on naturally aspirated vacuum. If it needs more power to climb a hill, the 8-speed automatic transmission will quickly and smoothly downshift to pull the engine out of that 2,000 RPM danger zone.
What You Can Do
If you are running the 2.0L engine and are sensitive to drone, high-clearance or chambered axle-back systems can sometimes be finicky. If you install the Quadratec Axle Back Exhaust and find the 2K RPM resonance bothersome, adding a small aftermarket resonator loop or a straight-through glasspack style pre-muffler in the mid-pipe section is a popular way to cancel out those specific four-cylinder drone frequencies without sacrificing the upgraded tone.
While both engines share the same exhaust routing out the back of the Wrangler JL, the difference in drone characteristics around the 2,000 RPM mark comes down to fundamental differences in engine architecture, acoustic frequencies, and how the transmission behaves.
1. Four-Cylinder vs. Six-Cylinder Sound Waves
The 3.6L V6 produces a smoother, higher-frequency exhaust note because it fires six times per two engine revolutions. This creates a more continuous stream of smaller sound pulses that are easier for a standard muffler to damp out.
The 2.0L Turbo, as an inline-four, fires only four times per two revolutions. This creates lower-frequency, higher-amplitude (punchier) sound pulses. Low-frequency sound waves carry more physical energy and are the primary culprit behind cabin "drone"—the resonance that matches the natural vibration frequency of the Jeep's interior panels.
2. Turbocharger Dynamics and Backpressure
A turbocharger acts as a natural muffler right at the exhaust manifold, chopping up sound waves before they hit the downpipe. However, because the turbo creates different backpressure characteristics, it alters the sound frequencies that travel down the line. When you open up the rear section with a high-flow axle-back exhaust, the raw, unrefined four-cylinder acoustic signature becomes much louder.
3. Real-World Driving Behavior at 2,000 RPM
The 2,000 RPM range is a critical spot for both engines, but they handle load differently:
The 2.0L Turbo relies heavily on boost to make its low-end torque. When you are cruising on the highway at 2,000 RPM and hit a slight incline, the engine goes under load and builds boost before deciding to downshift. An engine under boost puts out significantly more exhaust volume and pressure, which exacerbates drone at that exact engine speed.
The 3.6L V6 makes its power more linearly. At 2,000 RPM, it is running purely on naturally aspirated vacuum. If it needs more power to climb a hill, the 8-speed automatic transmission will quickly and smoothly downshift to pull the engine out of that 2,000 RPM danger zone.
What You Can Do
If you are running the 2.0L engine and are sensitive to drone, high-clearance or chambered axle-back systems can sometimes be finicky. If you install the Quadratec Axle Back Exhaust and find the 2K RPM resonance bothersome, adding a small aftermarket resonator loop or a straight-through glasspack style pre-muffler in the mid-pipe section is a popular way to cancel out those specific four-cylinder drone frequencies without sacrificing the upgraded tone.
Robert K.
Any fitment issues on a 2023 Willys 4xe with 2.5" Metalcloak True Dual rate lift?
You won't experience any issues installing it on the 4xe platform itself. Just take an extra moment during installation to visually verify clearance between the driver-side pipe and your Metalcloak rear track bar bracket before tightening everything down. You should not experience fitment issues, just double check clearance as you install.
Bill H.
Does it have at least somewhat of a better sound then OEM at idle?
Yes, the Quadratec Axle Back Exhaust provides a significantly deeper and more refined sound at idle compared to the factory (OEM) exhaust.
While the stock Jeep exhaust is often described as "anemic" or overly quiet, this system utilizes a straight-through perforated core with stainless steel mesh wrap. This design allows the engine to produce a noticeable rumble and "purr" at idle without becoming obnoxiously loud or raspy.
While the stock Jeep exhaust is often described as "anemic" or overly quiet, this system utilizes a straight-through perforated core with stainless steel mesh wrap. This design allows the engine to produce a noticeable rumble and "purr" at idle without becoming obnoxiously loud or raspy.
