VANCE HINES 1801-0391 Slash Ovals Muffler Slip

( Brand: Vance Hines ), ( Manufacturer Part Number: 1801-0391 ), ( Part Type: Slip Muffler )

Review VANCE HINES Harley Davidson And Slash Ovals Slip on Mufflers fits TWIN TOURING 1999–2016

The **Vance Hines 1801-0391 99-16 Harley-Davidson Touring Twin Slash Ovals Slip-On Mufflers** are a meticulously engineered upgrade designed to enhance the performance, aesthetics, and overall riding experience of Harley-Davidson s iconic Twin Cam 96/99 and 2006 2016 Evolution engines, specifically tailored for the Touring lineup. Crafted from high-quality **304 stainless steel**, these slip-on mufflers feature a bold, aggressive **oval exhaust design** that not only amplifies the signature Twin Slash growl but also delivers a striking visual statement with their sharp, angular contours. The **99-16** designation ensures compatibility with a wide range of Harley-Davidson models, including the **Touring, Road Glide, Electra Glide, and Street Glide**, making them a versatile choice for riders seeking both power and presence. Underneath their sleek exterior, these mufflers incorporate Vance Hines signature **high-flow exhaust technology**, featuring **precision-machined chambers and optimized baffling** to maximize throttle response while maintaining a deep, resonant tone that resonates with the engine s natural power delivery. The **slip-on installation** is both straightforward and secure, requiring minimal modification to the stock exhaust system, allowing for a cleaner, more streamlined look without sacrificing performance. Whether cruising down a scenic highway or navigating city streets, these mufflers elevate the sound signature to a **bold, commanding growl** that turns heads while ensuring the engine breathes with improved efficiency. Built to withstand the rigors of daily riding, the **corrosion-resistant stainless steel construction** guarantees durability, even in harsh weather conditions, making them a long-term investment for discerning Harley owners who demand both style and substance. Perfect for riders who appreciate a balance of **aggressive aesthetics, enhanced performance, and unmistakable Harley character**, the Vance Hines 99-16 Ovals Slip-Ons are more than just exhaust components they re a statement of mechanical artistry and riding passion.

### **Pros and Cons of Buying Vance Hines 1801-0391 (99-16 Harley-Davidson Touring Twin Slash Ovals Slip-On Mufflers)**

1. **Sound Quality** These mufflers are designed to produce a deep, aggressive tone that enhances the stock exhaust note of Harley-Davidson Touring Twin engines. The oval shape and Slash design contribute to a more open, resonant exhaust sound compared to stock or aftermarket options that may muffle the engine s natural voice.

2. **Legal Compliance** The 1801-0391 model is a slip-on muffler that replaces the stock mufflers on Harley-Davidson Touring Twins (2009-2016 models). Since it retains the factory-style design and meets EPA/California emissions standards (when paired with the correct exhaust system), it avoids the risk of failing emissions tests or drawing attention from law enforcement.

3. **Aesthetic Appeal** The oval shape and polished finish match the aggressive styling of the Touring Twin lineup. They blend well with stock exhaust systems, making them a subtle yet noticeable upgrade for those who want a sportier look without going full aftermarket.

4. **Ease of Installation** As slip-on mufflers, they require minimal modification to install. No welding or major exhaust alterations are needed, making them a straightforward DIY project for most mechanics or even experienced riders.

5. **Durability** Vance Hines is a reputable brand known for high-quality exhaust components. These mufflers are built with stainless steel, which resists corrosion and withstands the rigors of long rides and varying weather conditions.

6. **Performance Retention** Unlike heavily modified exhaust systems that can restrict flow, these mufflers maintain a balance between sound and performance. They allow the engine to breathe while delivering a more dynamic exhaust note.

7. **Compatibility** Specifically designed for Harley-Davidson Touring Twins (2009-2016), they fit seamlessly with the stock exhaust headers and mid-pipe, ensuring a proper seal and optimal function.

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1. **Sound May Be Too Loud for Some** While the Slash design enhances the exhaust note, it can produce a sound level that exceeds stock exhaust volume. If you prefer a quieter, more refined tone, these mufflers may be too aggressive for your taste or riding environment.

2. **Limited Customization** Unlike full exhaust systems or drop-in replacements with multiple sound options, these mufflers offer a single tone. If you re looking for a softer or more aggressive sound, you ll need to explore other aftermarket options.

3. **Price Point** As a premium aftermarket product, these mufflers are more expensive than stock replacements. For riders on a tight budget, the cost may be a deterrent, especially if they re not willing to compromise on other exhaust components.

4. **Potential for Backfires** Like many aftermarket exhaust systems, these mufflers can occasionally experience backfires, particularly during deceleration or throttle changes. This is more common with slip-on mufflers that don t fully isolate the exhaust system from the engine.

5. **Resale Impact** While they re a popular upgrade, the presence of aftermarket mufflers may slightly reduce the resale value of your bike compared to a stock exhaust system. However, this impact is usually minimal for well-maintained Touring Twins.

6. **Installation Quality Depends on User** Although slip-on mufflers are relatively easy to install, improper sealing or mounting can lead to leaks, rattles, or even exhaust gas leaks. Riders without mechanical experience may struggle with a clean installation.

7. **Limited Availability of Replacement Parts** If something goes wrong (e.g., a cracked muffler or damaged gasket), finding exact replacements may be more difficult than with OEM parts, though Vance Hines does offer support for their products.

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### **Conclusion**

The Vance Hines 1801-0391 Slip-On Mufflers for Harley-Davidson Touring Twins (2009-2016) are an excellent choice for riders seeking a **legal, stylish, and performance-friendly** exhaust upgrade. They deliver a **bold, aggressive sound** that enhances the bike s character without sacrificing compliance or practicality. The ease of installation and durability make them a practical option for those who want to improve their bike s exhaust note without major modifications.

However, they may not suit riders who prefer a **softer, more refined tone** or those operating on a tight budget. Additionally, the potential for backfires and the need for careful installation are minor drawbacks that can be mitigated with proper maintenance.

### **Recommendation**

If you own a **Harley-Davidson Touring Twin (2009-2016)** and want to **enhance your exhaust sound while staying legal and maintaining a stock-like appearance**, these mufflers are a **strong recommendation**. They strike a balance between performance, aesthetics, and compliance, making them ideal for riders who appreciate a **sportier tone without extreme modifications**.

For riders who prioritize **maximum volume and customization**, exploring full exhaust systems or drop-in replacements with adjustable sound options might be worth considering. However, for most Touring Twin owners looking for a **subtle yet noticeable upgrade**, the Vance Hines 1801-0391 mufflers are a **solid and reliable choice**.

Details:

The left pipe has a scuff on the bottom edge of muffler and few other minor blemishes. Otherwise good used condition. Given the location, most of mentioned blemishes are not easily seen when installed. Oval openings measure 4.5 wide, FITMENT-, '99-'16 Harley Davidson FLH Touring model's Electra Glide, Street Road King, Does not fit '15-'16 FLRT Freewheeled There is a small dent on the side of right muffler and micro scuff bottom.

See all photos.

part #: 18010391 price

• $350.00

specifications cyclemufflermo:

• for models: Touring, Twin
• for makes: Harley, Davidson
• for years: 1999-2016
• brand: Vance Hines
• mpn: 1801-0391
• part type: Slip Muffler

offer cyclemufflermo:

• best offers: True
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: April 1, 2026
• quantity: 1

returns cyclemufflermo:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

general cyclemufflermo:

• Motorcycle Scooter Parts Accessories > Exhaust Emission Systems > Silencers, Mufflers Baffles
• condition: Used

seller cyclemufflermo:

• city: Bettendorf, Iowa
• # reviews: 39525
• rating: 99.9%

shipping cyclemufflermo:

• service: Standard
• cost: $38.00
• type: Fixed
• class: Standard
• transit: 2-5 Days

payments cyclemufflermo:

• credit card: Diners-club
• other
• wallet: Paypal

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