A new axle back exhaust for your Jeep JL changes both sound and performance with a straightforward installation. Finding the best axle back exhaust for Jeep JL can feel overwhelming with so many options on the market. This guide breaks down the top picks, installation steps, and key factors to consider.
You want a deeper tone without waking the neighbors. You want better flow without breaking the bank. The right axle back exhaust delivers all that and more.
Why Upgrade Your Jeep JL Exhaust
Stock exhaust systems are designed for quiet operation and cost savings. They restrict airflow and mute the engine’s natural character. An aftermarket axle back system opens up the sound and improves throttle response.
Axle back exhausts replace everything from the rear axle to the tailpipe. They are the easiest exhaust upgrade you can do. No cutting or welding required on most models.
Sound Improvement
The 3.6L Pentastar V6 sounds decent stock, but it lacks personality. A good axle back gives it a growl at idle and a roar under acceleration. You get a more aggressive tone without drone on the highway.
Performance Gains
While axle back exhausts won’t add huge horsepower, they reduce backpressure. This helps the engine breathe better. You might feel a slight improvement in throttle response and mid-range torque.
Installation Simplicity
Most axle back systems bolt directly to the factory exhaust pipes. You don’t need special tools or a lift. A set of jack stands and basic hand tools are enough for the job.
Best Axle Back Exhaust For Jeep Jl
Here are the top rated axle back exhausts for the Jeep JL. Each one offers a different balance of sound, price, and build quality.
Borla S-Type Axle Back Exhaust
Borla is a premium brand known for quality and sound. The S-Type system uses stainless steel construction and a straight-through design. It produces a deep, aggressive tone without excessive drone.
- Material: T-304 stainless steel
- Sound level: Moderate to loud
- Drone: Minimal at highway speeds
- Price: $$$$
Installation is straightforward. The system comes with all necessary hardware. Expect a noticeable improvement in sound quality and a slight bump in throttle response.
Flowmaster Outlaw Series
Flowmaster’s Outlaw series is for those who want maximum volume. It uses a straight-through muffler design that eliminates most restrictions. The sound is loud and raw, perfect for off-road use.
- Material: Aluminized steel
- Sound level: Loud
- Drone: Noticeable at cruising speeds
- Price: $$
This system is not for everyone. If you want a quiet cabin, look elsewhere. But if you want to turn heads, the Outlaw delivers.
Dynomax 39464 Axle Back Exhaust
Dynomax offers a budget-friendly option that still sounds great. The 39464 system uses a chambered muffler design for a deep tone without being obnoxious. It’s a good middle ground between stock and loud.
- Material: Aluminized steel
- Sound level: Moderate
- Drone: Low
- Price: $
Installation is simple, but you may need to trim the factory pipes slightly. The sound is deeper than stock but not overwhelming.
MagnaFlow Overland Series
MagnaFlow’s Overland series is designed for off-road enthusiasts. It features a rugged construction and a deep, mellow tone. The system is built to handle mud, water, and rocks.
- Material: T-304 stainless steel
- Sound level: Moderate
- Drone: Minimal
- Price: $$$
The sound is refined but still aggressive. It’s a great choice if you want a quality system that lasts.
Rugged Ridge Axle Back Exhaust
Rugged Ridge is a well-known brand in the Jeep aftermarket. Their axle back exhaust offers a deep tone at a reasonable price. It uses a straight-through design for better flow.
- Material: Aluminized steel
- Sound level: Moderate to loud
- Drone: Some at highway speeds
- Price: $$
Installation is easy, and the sound is satisfying. It’s a solid choice for the budget-conscious buyer.
How To Choose The Right Axle Back Exhaust
Consider these factors before making a purchase. Your driving habits and preferences will determine the best system for you.
Sound Preference
Do you want a deep rumble or a loud roar? Listen to sound clips online to get an idea. Remember that recordings don’t capture the full experience.
Material Quality
Stainless steel lasts longer than aluminized steel. If you live in a rust-prone area, invest in stainless. Aluminized steel is cheaper but may corrode over time.
Drone Level
Some systems produce drone at certain RPMs. This can be annoying on long drives. Look for systems with Helmholtz chambers or other drone-reducing features.
Budget
Prices range from under $200 to over $800. Set a budget and stick to it. Remember that installation costs are minimal if you do it yourself.
Installation Guide For Axle Back Exhaust
Installing an axle back exhaust is a DIY-friendly project. Follow these steps for a smooth installation.
Tools Needed
- Jack and jack stands
- Socket set and ratchet
- Penetrating oil (like WD-40)
- Rubber mallet
- Safety glasses and gloves
Step-By-Step Process
- Park on a level surface and let the exhaust cool down.
- Jack up the rear of the Jeep and secure it on jack stands.
- Spray penetrating oil on the exhaust hangers and bolts.
- Remove the bolts connecting the axle back section to the mid-pipe.
- Pull the rubber hangers off the mounting points.
- Remove the old axle back section from under the vehicle.
- Compare the new system to the old one for fitment.
- Install the new axle back by sliding the hangers into place.
- Tighten the bolts to the manufacturer’s specifications.
- Start the engine and check for leaks or rattles.
Take your time and double-check all connections. A loose clamp can cause annoying noises.
Common Issues And Solutions
Even with a good system, you might encounter some problems. Here are common issues and how to fix them.
Exhaust Leaks
If you hear a hissing sound, check the connections. Tighten the clamps or use exhaust sealant. Make sure the pipes are aligned properly.
Rattling Noises
Rattles often come from loose hangers or contact with the underbody. Check that the exhaust is not touching the frame or suspension. Adjust the hangers as needed.
Drone At Highway Speeds
Some drone is normal with aftermarket exhausts. If it’s too loud, consider adding a resonator or sound-deadening material. You can also adjust your driving speed to avoid the resonant frequency.
Maintenance Tips For Your Exhaust
Keep your exhaust system in good shape with these simple tips.
- Check bolts and clamps every few months.
- Clean the tips with metal polish to prevent rust.
- Inspect for damage after off-road trips.
- Replace worn hangers to prevent sagging.
Regular maintenance extends the life of your exhaust and keeps it sounding great.
Frequently Asked Questions
Will An Axle Back Exhaust Void My Warranty?
No, an axle back exhaust does not void your warranty. However, if the installation causes damage, that part may not be covered. Always use quality parts and proper installation techniques.
How Loud Is A Typical Axle Back Exhaust?
Most axle back systems add 5-10 decibels over stock. This is noticeable but not deafening. Some systems are louder, so check sound clips before buying.
Can I Install An Axle Back Exhaust Myself?
Yes, most people can install an axle back exhaust in about an hour. Basic mechanical skills and common tools are all you need. Follow the manufacturer’s instructions carefully.
Do I Need To Tune My Jeep After Installing An Axle Back Exhaust?
No, a tune is not required for an axle back exhaust. The system does not change the engine’s air-fuel ratio significantly. However, a tune can optimize performance if you also upgrade other components.
What Is The Best Axle Back Exhaust For A Jeep JL With A 2.0L Turbo?
The 2.0L turbo engine sounds different from the V6. Borla and MagnaFlow offer systems specifically for the turbo model. Listen to clips to find a tone you like.
Final Thoughts On Choosing The Best Axle Back Exhaust For Jeep Jl
Upgrading your Jeep JL’s exhaust is one of the most satisfying mods you can do. The sound improvement alone makes it worth the investment. Whether you choose Borla, Flowmaster, or another brand, you’ll enjoy a more engaging driving experience.
Remember to consider your budget, sound preference, and installation comfort. The best axle back exhaust for your Jeep JL is the one that fits your needs and makes you smile every time you start the engine.
Take your time researching and listening to sound clips. Read reviews from other Jeep owners. With the right choice, you’ll transform your JL into a machine that sounds as good as it looks.
Now go ahead and pick the system that calls to you. Your Jeep will thank you with a growl that turns heads on the trail and the street.