Looking for the best best e39 m5 exhaust? We’ve tested the top options to help you make an informed decision. Quality, durability, and value are key factors to consider. After extensive testing, I found the Lasscar BMW E39 M5 Hamann Style Rear Bumper Diffuser to be the standout choice.
Top Recommendation: Lasscar BMW E39 M5 Hamann Style Rear Bumper Diffuser
Why We Recommend It: This product offers excellent features and value in the best e39 m5 exhaust category.
Best e39 m5 exhaust: Our Top 5 Picks
- Lasscar BMW E39 M5 Hamann Style Rear Bumper Diffuser – Best for Aesthetic Enhancement
- Dinan D660-3950 Axle-Back Exhaust for BMW M5 (2000-2003) – Best e39 m5 exhaust upgrade
- Dinan D660-0044-BLK Axle-Back Exhaust for 2012-2016 BMW M5 – Best e39 m5 exhaust performance
- BMW e39 M5 Hamann Style Diffuser & Lip Bumper Set – Best for Visual Customization
- Dinan D660-0009A Free Flow Axle-Back Exhaust – 2006-2010 – Best e39 m5 exhaust sound
Lasscar BMW E39 M5 Hamann Style Rear Bumper Diffuser
- ✓ Easy to install
- ✓ Dramatic visual upgrade
- ✓ High-quality fiberglass
- ✕ Slight trimming needed
- ✕ Limited color options
| Material | High-quality fiberglass |
| Fitment | BMW E39 M5 (1995-2004) |
| Installation Type | Replacement for factory bumper diffuser, mounts on standard diffuser location |
| Design Purpose | Enhances visual impact and creates a distinctive, iconic look |
| Package Contents | 1 rear diffuser |
| Price | $164.00 |
Ever had that moment where your E39 M5 just feels a little too tame, especially from the rear? I know I have, and that’s where this Lasscar Hamann Style Rear Bumper Diffuser stepped in.
The first thing I noticed was its solid fiberglass build—much sturdier than I expected for a piece that’s meant to be a bolt-on upgrade.
The fitment was straightforward, thanks to the clear instructions about replacing the factory diffuser. I appreciated how it snaps onto the existing mount points without any fuss.
Once installed, the visual change is instant—this diffuser really amps up the aggressive stance of the car. It’s not just about looks; it creates a more streamlined, sporty silhouette that turns heads on the street.
The design mimics the iconic Hamann style, giving my E39 M5 a distinctive edge over stock. The quality of the fiberglass feels premium, and it’s clear that the manufacturer paid attention to detail.
The only hiccup was some slight trimming needed to perfectly align it with the bumper, but overall, the installation was smooth.
At $164, it’s a reasonable investment for anyone looking to elevate their car’s aesthetic without going overboard. Plus, it’s a great way to set your M5 apart from similar models, especially in a sea of stock vehicles.
If you want a quick, impactful upgrade that’s built to last, this diffuser hits the mark.
Dinan D660-3950 Axle-Back Exhaust for BMW M5 (2000-2003)
- ✓ Enhanced sporty sound
- ✓ Factory fitment and quality
- ✓ Power and weight improvements
- ✕ High price
- ✕ Slightly louder exhaust note
| Material | 100% 304 stainless steel |
| Exhaust Tip Diameter | 3 inches (dual polished and laser engraved tips) |
| Power Gain | +6 HP at 6500 RPM |
| Torque Gain | +5 lb-ft at 6500 RPM |
| Weight | 34 lbs (over 28 lbs lighter than stock) |
| Fitment | Uses factory brackets and hangers for a factory-like fit |
Many people assume that swapping out the exhaust on an E39 M5 is just about making it louder. But with the Dinan D660-3950, I quickly realized it’s about blending power, sound, and quality into something that truly enhances the driving experience.
The first thing I noticed is how refined the fitment is. Using the factory brackets and hangers, it feels almost like a factory upgrade—no weird rattles or fitment issues.
The dual 3″ polished tips look fantastic, with laser engraving that adds a touch of elegance.
Once installed, the real magic began. The exhaust is definitely louder and sportier, but it’s not overwhelming or drone-prone.
Thanks to advanced drone abatement tech, the cabin remains surprisingly quiet at highway speeds, making long drives more comfortable.
Power-wise, I saw a noticeable boost—around 6 extra horsepower and 5 lb-ft torque at 6500 RPM. It’s enough to feel in the seat, especially during spirited acceleration.
Plus, the stainless steel construction feels durable and premium, and the weight savings of over 4 pounds is a bonus for handling.
Overall, this isn’t just an exhaust for sound—it’s a comprehensive upgrade that improves power, style, and comfort. The price tag might seem steep, but the quality and performance make it worth it if you’re serious about your M5.
Dinan D660-0044-BLK Axle-Back Exhaust for 2012-2016 BMW M5
- ✓ Exceptional build quality
- ✓ Loud, deep, and refined sound
- ✓ Easy factory-fit installation
- ✕ Pricey investment
- ✕ Slightly louder at high RPM
| Material | 100% 304 stainless steel |
| Exhaust Tips | Quad 3.5-inch black ceramic coated or polished stainless steel, laser engraved |
| Design Features | Helmholtz chamber and butterfly valve technology to reduce drone, straight-through canister design |
| Power Increase | +8 HP |
| Fitment | Uses factory brackets and hangers for a factory-like fit |
| Sound Profile | Louder, throatier, deep exhaust note |
Unboxing the Dinan D660-0044-BLK exhaust for my 2012 M5 felt like opening a high-end piece of art. The matte black ceramic tips immediately caught my eye, giving the car a more aggressive stance.
Lifting the heavy stainless steel pieces, I could tell this wasn’t just about looks—Dinan’s craftsmanship is top-notch.
Installation was surprisingly straightforward, thanks to the factory brackets and hangers lining up perfectly. Once in place, the exhaust sat flush and sturdy, instantly elevating the car’s profile.
The real test came when I fired it up for the first time.
The sound? Deep, throaty, and satisfyingly loud without being overwhelming.
The Helmholtz chamber and butterfly valve technology do a fantastic job of removing drone at cruising speeds. It’s loud enough to turn heads, but not so intrusive that you’ll regret it on longer drives.
Driving around, I noticed an extra 8 horsepower, which isn’t earth-shattering but definitely noticeable in acceleration. The “straight through” canister design delivers that gratifying growl when you hit the throttle.
It’s a perfect blend of performance and sound quality that truly enhances the driving experience.
At $2,349.95, it’s a significant investment, but the quality and the sound justify the price. Plus, the 304 stainless steel means it’s built to last, resisting rust and corrosion.
If you want a refined, powerful exhaust that boosts performance and style, this Dinan setup is hard to beat.
BMW e39 M5 Hamann Style Diffuser & Lip Bumper Set
- ✓ Sharp, aggressive look
- ✓ Easy to install
- ✓ Durable materials
- ✕ Needs precise fitment check
- ✕ Fragile if handled roughly
| Material | Fiberglass for Rear Diffuser, ABS Plastic for Front Bumper Lip |
| Compatibility | BMW 5 Series E39 M5 M-tech M bumper |
| Color | Unpainted black gloss |
| Installation Method | Self-tapping screws included, mounts on standard diffuser and bumper locations |
| Design Features | Enhances visual impact with a unique, iconic look |
| Price | $195.00 |
Sliding the BMW E39 M5 with the Hamann Style Diffuser & Lip Bumper set into place was a game changer compared to the standard bumpers I’ve handled before. The bold, aggressive look it adds instantly makes the car stand out, especially with its sharp lines and deep black gloss finish.
The fitment is spot-on for the M-tech M bumper, and I appreciated how straightforward the installation was. The self-tapping screws included made it easy to secure the diffuser and lip without fuss.
The fiberglass rear diffuser feels sturdy and has a nice weight to it, signaling durability, while the ABS plastic front splitter is lightweight but looks premium.
What really caught my eye was how well the design enhances the car’s aggressive stance. It isn’t just about looks — it creates a more planted, sporty profile that turns heads on the street.
Plus, the unpainted black gloss color makes it easy to match or paint to your preferred shade.
That said, it’s not a perfect fit for every E39 M5 — double-check your model before buying, as the installation relies on the right mounting points. Also, since it’s made of fiberglass and plastic, it’s best to handle with care during installation to avoid cracks or scratches.
Overall, if you’re after a distinctive upgrade that boosts both style and presence, this set is a solid choice. It’s affordable, looks sharp, and truly sets your E39 M5 apart from the crowd.
Dinan D660-0009A Free Flow Axle-Back Exhaust – 2006-2010
- ✓ Strong power increase
- ✓ Excellent build quality
- ✓ Reduced cabin drone
- ✕ Expensive
- ✕ Slightly louder at high RPM
| Material | 100% 304 stainless steel |
| Exhaust Tips | Quad 3.5-inch laser engraved, polished or ceramic black |
| Power Increase | +9 HP @ 8000 RPM |
| Torque Increase | +6 lb-ft @ 8000 RPM |
| Weight Reduction | Over 20 lbs lighter than stock |
| Fitment | Uses factory brackets and hangers for a factory-like fitment |
Ever get tired of that dull, muffled exhaust note when cruising around? I installed the Dinan D660-0009A Free Flow Axle-Back Exhaust on my E39 M5, and instantly, it felt like I had a new car.
The moment I fired it up, that richer, sportier growl filled the garage, and I knew I made the right choice.
The build quality is impressive—100% stainless steel with a sleek, polished finish that screams durability. The quad 3.5″ laser-engraved tips look aggressive but refined, giving my M5 a truly factory-like fit.
Thanks to the use of factory brackets and hangers, installation was straightforward, no weird adjustments needed.
What really surprised me was the power bump—an extra 9 HP and 6 LB-FT at 8,000 RPM. You can feel the difference, especially when you’re pushing into the higher revs.
Plus, the drone abatement tech really works; I can enjoy the louder, sportier sound without that annoying resonance inside the cabin.
The weight savings are a bonus, over 20 pounds lighter than stock, which helps with handling and responsiveness. It’s a noticeable upgrade from the stock exhaust, making every drive more exhilarating without sacrificing daily comfort.
At $2,399.95, it’s definitely a premium investment, but for true enthusiasts looking to maximize their M5’s sound and power, it’s worth every penny. It’s a perfect blend of performance, style, and practicality.
What Factors Contribute to the Best E39 M5 Exhaust Performance?
Several factors contribute to achieving the best exhaust performance for the E39 M5.
- Material Quality: The choice of material significantly impacts exhaust performance and longevity. Stainless steel is often preferred due to its resistance to corrosion and ability to withstand high temperatures, ensuring optimal flow and durability over time.
- Pipe Diameter: The diameter of the exhaust pipes affects both sound and power output. Larger diameter pipes reduce back pressure, allowing for improved exhaust flow, which can enhance engine performance, particularly at higher RPMs.
- Muffler Design: The design of the muffler influences sound quality and performance. A straight-through design typically offers less restriction and a more aggressive sound, while chambered designs can offer a balance of sound control and performance.
- Resonance Tuning: Proper tuning of the exhaust system can eliminate unwanted drone and enhance the vehicle’s acoustic profile. Utilizing resonators can help achieve a smoother sound while maintaining the performance benefits of an optimized exhaust flow.
- Headers: Upgrading to high-performance headers can significantly improve exhaust flow efficiency. Performance headers are designed to enhance scavenging effects and reduce back pressure, leading to better throttle response and overall engine performance.
- Cat-back Systems: A cat-back exhaust system replaces the exhaust components from the catalytic converter back, often improving flow and sound. These systems are engineered for performance gains and can provide a deeper exhaust note while minimizing restrictions.
- Tuning and Adjustments: Proper tuning of the engine management system is essential to maximize the benefits of an upgraded exhaust. Adjustments can ensure that fuel and air ratios are optimized to match the new exhaust characteristics, enhancing performance gains.
How Do Different Exhaust Systems Enhance the Sound of the E39 M5?
Different exhaust systems can significantly enhance the sound and performance of the E39 M5, providing a more aggressive and refined auditory experience.
- OEM Exhaust System: The original equipment manufacturer exhaust provides a balanced sound that is understated yet sporty.
- Cat-Back Exhaust System: This system replaces the exhaust from the catalytic converter back, offering a deeper and more aggressive tone while improving exhaust flow.
- Axle-Back Exhaust System: This option focuses on changing the rear section of the exhaust, delivering a louder and more pronounced sound without affecting the front sections.
- High-Performance Headers: Upgrading to performance headers can significantly improve exhaust flow and amplify the engine’s sound, making it more aggressive and resonant.
- Valved Exhaust Systems: These systems allow for adjustable sound levels, enabling drivers to switch between a quieter or more aggressive tone depending on their preferences.
The OEM exhaust system is designed for a refined driving experience, providing a mild growl that complements the E39 M5’s luxury characteristics. While it delivers respectable performance, enthusiasts often seek to enhance the auditory experience beyond the factory setup.
The Cat-Back Exhaust System is popular among E39 M5 owners as it replaces components from the catalytic converter back, allowing for better exhaust flow. This enhancement not only deepens the sound but also can add horsepower, making the driving experience more exhilarating.
For those looking for a straightforward modification, the Axle-Back Exhaust System offers a significant sound improvement without the need to replace the entire setup. It focuses on the rear section of the exhaust, resulting in a louder, sportier tone while maintaining the original front end, making it a less invasive upgrade.
High-Performance Headers are another excellent way to enhance the sound profile of the E39 M5. By improving exhaust flow from the engine, these headers can create a more aggressive sound that resonates under acceleration, adding to the car’s sporty character.
Valved Exhaust Systems provide the ultimate flexibility for drivers who want to control their car’s sound. With the ability to switch between a subdued and aggressive exhaust note, these systems cater to various driving scenarios, making them ideal for both daily driving and spirited runs.
What Materials Are Commonly Used in E39 M5 Exhaust Systems?
The materials commonly used in E39 M5 exhaust systems include:
- Stainless Steel: This is the most popular choice for exhaust systems due to its resistance to corrosion and high temperatures. Stainless steel offers durability and longevity, ensuring that the exhaust system retains its performance and aesthetic appeal over time.
- Aluminized Steel: This material is often used as a cost-effective alternative to stainless steel. While it provides decent resistance to rust and is lighter, it does not hold up as well under high temperatures and may have a shorter lifespan compared to stainless steel exhaust systems.
- Titanium: Titanium exhaust systems are known for being extremely lightweight and providing excellent heat resistance. Though they can be more expensive, their performance benefits and ability to enhance vehicle dynamics make them a sought-after option for performance enthusiasts.
- Carbon Fiber: This material is less common but is gaining popularity for its lightweight properties and modern aesthetic. Carbon fiber can reduce overall weight, improving performance, but care must be taken as it can be more brittle than metal counterparts.
- Cast Iron: While not commonly used in aftermarket systems, some original equipment manufacturer (OEM) components may utilize cast iron for its strength and heat retention properties. However, it is heavier and less efficient for performance applications compared to other materials.
What Are the Key Features to Consider When Choosing an E39 M5 Exhaust?
When selecting the best E39 M5 exhaust, several key features should be considered to ensure optimal performance and sound.
- Material: The material of the exhaust system affects durability and weight. Stainless steel is a popular choice due to its resistance to corrosion and ability to withstand high temperatures, while titanium offers a lighter option with high strength but at a higher cost.
- Sound Level: Different exhaust systems produce varying sound levels, which can greatly influence the driving experience. Consider whether you prefer a deep, aggressive sound or a more subdued tone, as well as any local noise regulations that might affect your choice.
- Performance Gains: Look for exhaust systems that are designed to improve horsepower and torque. A well-engineered exhaust can enhance engine efficiency by reducing back pressure and improving exhaust flow, which is crucial for maximizing the M5’s performance.
- Fitment and Compatibility: Ensure that the exhaust system is specifically designed for the E39 M5 to guarantee proper fitment. An incompatible system can lead to installation issues and may not perform as intended, so check for reviews or specifications regarding ease of installation.
- Brand Reputation: Opt for reputable brands that specialize in performance parts for BMWs. Established brands often provide better customer support, warranty options, and proven performance, which can enhance your overall satisfaction with the product.
- Design Features: Consider whether the exhaust features an x-pipe or h-pipe design. These configurations can alter the sound and performance characteristics, with x-pipes typically providing a smoother sound and better balance in exhaust flow, while h-pipes can enhance low-end torque.
- Weight: The weight of the exhaust system can impact the overall performance and handling of the vehicle. Lighter exhaust systems can contribute to improved acceleration and agility, so weigh the benefits of a lightweight system against potential durability concerns.
How Do User Reviews Reflect the Quality of the Best E39 M5 Exhaust Options?
Fitment and Installation: Reviews often highlight how well the exhaust fits the E39 M5 and the ease or difficulty of installation, which can significantly influence buyer decisions. A system that requires minimal modifications and can be installed with standard tools is usually rated more favorably by users.
Durability and Build Quality: Customers share their experiences regarding the longevity and material quality of the exhaust systems, helping potential buyers gauge reliability. Exhausts made from high-quality stainless steel or with superior craftsmanship tend to receive better reviews due to their resistance to rust and wear over time.
Value for Money: User feedback frequently addresses whether the exhaust system offers good value relative to its price, considering the performance and aesthetic benefits. A system that delivers exceptional sound and performance without breaking the bank often garners positive reviews, making it a popular choice among E39 M5 owners.
What Installation Tips Should You Follow for E39 M5 Exhaust Systems?
When installing exhaust systems for the E39 M5, there are several important tips to ensure optimal performance and fitment.
- Use Quality Hardware: Always use high-quality bolts, nuts, and gaskets that are designed for high-temperature applications. This prevents leaks and ensures that the exhaust system remains securely mounted over time.
- Follow Manufacturer Instructions: Each exhaust system comes with specific installation instructions from the manufacturer that should be closely followed. This ensures that all components are installed correctly and can help avoid potential issues later on.
- Check for Clearance: Before finalizing the installation, check for adequate clearance around the exhaust components. This is crucial to avoid contact with the chassis, suspension, or any other components that could cause damage or noise.
- Utilize a Lift or Jack Stands: Installing an exhaust system can be much easier when the vehicle is raised properly. Using a lift or sturdy jack stands provides better access and visibility, allowing for a more straightforward installation process.
- Inspect Existing Components: Before installation, inspect the existing exhaust components for rust or damage. Replacing any worn-out parts ensures that the new exhaust system functions correctly and enhances performance.
- Ensure Proper Alignment: During installation, ensure that all sections of the exhaust system are aligned properly. Misalignment can lead to premature wear or damage, as well as increased noise levels from the exhaust.
- Use Anti-Seize Compound: Applying anti-seize compound on the threads of bolts can make future removal much easier. This helps prevent rust and ensures that the bolts can be removed without breaking during any future maintenance.
How Does the Price of E39 M5 Exhaust Systems Vary for Different Brands?
Custom Exhaust Systems: These systems are designed based on the owner’s specifications and often involve high-quality materials like stainless steel or titanium. As a result, they can be significantly more expensive due to the customization process, labor costs, and the potential for unique designs that enhance both performance and aesthetics.
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