fits model: Road, Glide. make: Harley. year: 2009–2013.

( Brand: Harley-davidson ), ( Country Of Origin: United States ), ( Features: Easy To Replace ), ( Vintage Part: No ), ( Oe/oem Part Number: 65547-09 ), ( Machine Type: Street Motorcycle ), ( Material: Chrome ), ( Placement On Vehicle: Exhaust ), ( Mounting Style: Slip-on ), ( Type: Muffler ), ( UPC: 655470940590 )
The **Harley-Davidson 65547-09 40590 Road Glide Single Exhaust Muffler** is a meticulously engineered aftermarket component designed to elevate the performance, aesthetics, and overall riding experience of the iconic 2009 2013 Harley-Davidson Road Glide models equipped with the **Evo Cat** or **Evo** engines. Crafted from high-grade **mild steel** with a durable **black powder-coat finish**, this muffler is built to withstand the rigors of daily riding while delivering a refined exhaust note that balances power and smoothness. Unlike stock dual-exhaust setups, this single exhaust system streamlines the undercarriage, reducing weight and improving aerodynamics, which can contribute to better handling and fuel efficiency. The muffler features a **precision-welded construction** with reinforced internal baffling to optimize exhaust flow, ensuring a deep, resonant tone that resonates with the classic Harley-Davidson growl while maintaining compliance with emissions standards. Ideal for riders seeking a sleeker, more aggressive look without sacrificing performance, this exhaust is a seamless upgrade for those who appreciate a bold yet functional modification. Whether cruising on the highway or navigating city streets, the **40590 Road Glide Single Exhaust Muffler** enhances both the visual appeal and mechanical prowess of your bike, making it a standout choice for enthusiasts who demand quality and character in every detail.
### Pros and Cons of buying a Harley-Davidson 65547-09 40590 Road Glide (2009 2013) Single Exhaust Muffler
#### **Pros:**1. **Improved Sound and Tone** A single exhaust system can provide a deeper, more aggressive tone compared to the stock dual-exhaust setup, enhancing the Road Glide s already distinctive Harley sound. This is often preferred by riders who enjoy a more traditional or aggressive exhaust note.
2. **Simplified Maintenance** With fewer components (only one muffler instead of two), there is less risk of mismatched parts or issues with one side failing independently. This can reduce long-term maintenance complexity.
3. **Weight Reduction** A single exhaust system may be lighter than the stock dual setup, which could slightly improve handling and fuel efficiency, though the difference is minimal on a large bike like the Road Glide.
4. **Aesthetic Appeal** Some riders prefer the look of a single exhaust, especially if they are modifying their bike for a more aggressive or custom appearance. It can also make the bike stand out from stock models.
5. **Potential Performance Boost** In some cases, a single exhaust with a slightly larger diameter or optimized design can improve exhaust flow, though the Road Glide s engine is already well-tuned, so gains may be marginal.
6. **Compatibility with Other Mods** If you plan to add other exhaust components (e.g., headers, slip-ons, or a full system), a single exhaust can serve as a starting point before upgrading further.
7. **Cost-Effective Upgrade** Compared to a full exhaust system, a single muffler is relatively inexpensive, making it an accessible way to customize your bike without a large investment.
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#### **Cons:**1. **Loss of Symmetry and Balance** The Road Glide is designed with dual exhausts for balance, especially at higher speeds. A single exhaust can disrupt this symmetry, potentially affecting ride stability, vibration, and handling, particularly in windy conditions or at highway speeds.
2. **Potential Backpressure Issues** The stock dual exhaust is tuned to work optimally with the engine s powerband. Switching to a single exhaust without proper tuning (e.g., headers or a full system) could create backpressure, reducing performance or causing engine strain.
3. **Legal Restrictions** Some regions or states have strict emissions and noise regulations. A single exhaust, especially if modified with aftermarket parts, may violate local laws or require additional compliance measures (e.g., DOT certification).
4. **Compatibility Concerns** The Road Glide s dual exhaust system is designed to work with specific components. A mismatched single exhaust (e.g., from a different Harley model) could lead to leaks, improper fitment, or even damage to the exhaust system or undercarriage.
5. **Resale Value Impact** Harley-Davidson values stock or minimally modified bikes higher. Installing a single exhaust (especially a non-OEM part) could reduce resale value, as buyers may prefer bikes that retain original components.
6. **Potential for Poor Quality Parts** If purchasing from a non-reputable seller, there is a risk of receiving a low-quality muffler that rusts quickly, leaks, or fails prematurely. OEM or high-quality aftermarket parts are essential for longevity.
7. **Maintenance and Warranty Void** Installing aftermarket parts may void the bike s warranty, and the single exhaust could require more frequent inspections for leaks or corrosion, especially in wet climates.
8. **Sound Quality Trade-Off** While some riders prefer the deeper tone of a single exhaust, others may find it too harsh or lacking in the balanced sound of the stock setup. Personal preference plays a big role here.
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### **Conclusion:**The Harley-Davidson 65547-09 40590 single exhaust muffler for the 2009 2013 Road Glide offers a straightforward way to customize your bike s sound and appearance. It is a viable option if you prioritize a deeper exhaust note, simplicity, and aesthetic changes without a major investment. However, the trade-offs potential handling issues, backpressure risks, legal concerns, and resale value impact must be carefully considered.
For most riders, a single exhaust is best suited as a **temporary or aesthetic modification** rather than a performance-focused upgrade. If you plan to keep the bike long-term or intend to sell it later, it may be wiser to stick with the stock dual exhaust or invest in a **full aftermarket exhaust system** that maintains balance and compliance.
If you proceed with the single exhaust, ensure you:- Purchase a **high-quality, OEM-compatible part** (or a well-reviewed aftermarket option).
- Verify **local regulations** to avoid legal issues.
- Consider **pairing it with a slip-on or headers** if you want performance benefits.
- Be prepared for **potential handling adjustments** and monitor the bike s performance closely.
### **Recommendation:**- **Buy it if:** You want a simple, cost-effective way to change your bike s sound and appearance, and you re okay with the minor trade-offs in balance and potential maintenance.
- **Skip it if:** You prioritize ride stability, resale value, or plan to keep the bike stock. In that case, consider a **full exhaust system** or other modifications that better align with your goals.
For the best results, consult with a Harley mechanic or exhaust specialist to ensure proper fitment and avoid unintended consequences.
This comes as you see it in pics. This item is Real Genuine Parts, Not cheap C0pies. Please See All Photos. Most Of The Stuff I Sell Is Used And It All Can Not Be Perfect.
Street Glide, Road Electra Ultra Glide King. If you do not See it in the photos, Then is included. Condition As Seen. Has Scuffs As Seen In Photos.
PICS SPEAK FOR their self's. Genuine Harley Davidson. I will certainly be glad to help If can. Harley Davidson Road Glide 2009 2013 OEM Single Exhaust Muffler.