HARLEY-DAVIDSON 47919 Cvo Onyx Exhaust Header Heat Clamps

( Brand: Harley-davidson ), ( Manufacturer Part Number: 47919 ), ( Mounting Style: Clamp-on ), ( Machine Type: Street Motorcycle ), ( Color: Black Onyx Chrome ), ( Material: Black Chrome, Black Onyx Chrome ), ( Vintage Part: No ), ( Placement On Vehicle: Exhaust ), ( Type: Street Ultra Electra Road Glide King ), ( Oe/oem Part Number: Oem ), ( Manufacturer Warranty: 1 Month ), ( Features: Easy To Replace ), ( Universal Fitment: Yes ), ( Finish: Black ), ( Country Of Origin: United States )

Review HARLEY DAVIDSON Oem Cvo Black Onyx Chrome Exhaust Header Heat Shields Clamps fits 1925–2017

The **Harley-Davidson 47919 17"-25" CVO Onyx Exhaust Header Heat Clamps** are a precision-engineered component designed exclusively for the iconic **CVO (Custom Vehicle Operation) models**, including the **2017 2025 Harley-Davidson Sportster 1200, 1250, 1340, and Ultra Limited**, as well as the **2017 2025 Harley-Davidson Street Glide, Street Glide Special, and Road Glide** variants. Crafted from **high-grade, heat-resistant stainless steel**, these clamps are engineered to securely fasten the **Onyx exhaust headers** to the frame, ensuring optimal performance, durability, and a seamless integration with Harley-Davidson s premium aftermarket exhaust systems. The **custom-fit design** of these clamps accounts for the unique contouring and spacing requirements of the CVO platform, providing a snug, vibration-dampening grip that prevents loosening under the high-stress conditions of aggressive riding or prolonged highway cruising. Each clamp is **laser-cut for precision**, eliminating the need for excessive tightening that could compromise the integrity of the exhaust system or frame mounts. The **black powder-coated finish** not only enhances their aesthetic appeal, complementing the aggressive, high-performance look of the Onyx headers, but also offers corrosion resistance, ensuring longevity even in harsh environmental conditions. Whether installed on a **low-slung Sportster or a towering Road Glide**, these clamps are a testament to Harley-Davidson s commitment to both **performance and craftsmanship**, allowing riders to experience the unfiltered power of their engine while maintaining the reliability and refinement associated with the CVO lineup. Built to withstand extreme temperatures and mechanical stress, they are an essential upgrade for enthusiasts seeking to maximize their bike s exhaust note, efficiency, and overall driving dynamics.

**Pros and Cons of Buying a Harley-Davidson 47919 17-25 CVO with Onyx Exhaust and Header Heat Clamps**

### **Pros**

1. **Performance and Power**

The 2017-2025 Harley-Davidson CVO (Custom Vehicle Operation) models are equipped with the **Evo engine**, which delivers significant power improvements over previous generations. The **120 horsepower** and **115 lb-ft of torque** make it one of the most powerful Harley-Davidson engines available, offering a thrilling ride with strong low-end torque and high-speed capability.

2. **Premium Build Quality and Customization**

The CVO designation indicates a **highly customized, premium build** with exclusive features not found on standard models. This includes **unique paint schemes, special badging, and enhanced suspension tuning** for a more refined ride. The **Onyx exhaust** is a high-end aftermarket upgrade that improves both aesthetics and performance by reducing backpressure and enhancing exhaust flow.

3. **Exhaust and Header Heat Clamps**

- **Improved sound** A deeper, more aggressive tone compared to stock exhausts.

- **Better performance** Reduced backpressure allows the engine to breathe more efficiently, potentially increasing horsepower and throttle response.

- **Durability** High-quality materials like **stainless steel and ceramic coating** ensure longevity and resistance to corrosion.

- **Aesthetic appeal** The **Onyx finish** provides a sleek, modern look that stands out from stock exhausts.

The **header heat clamps** help manage heat transfer from the exhaust headers to the frame, reducing the risk of **heat warping or damage** to the bike s structure, especially in high-performance applications.

4. **Riding Experience and Comfort**

The CVO models often come with **adjustable suspension (e.g., Walbro or hlins forks)** and **ergonomic seating**, making them more comfortable for long rides. The **Evo engine s smooth power delivery** also contributes to a more enjoyable riding experience compared to older Harley engines.

5. **Resale Value and Prestige**

Harley-Davidson CVO models, especially with premium aftermarket upgrades like the Onyx exhaust, hold their value well due to their **limited production and high demand**. Owning a CVO with custom exhaust work adds prestige and exclusivity.

6. **Aftermarket Support and Modding Potential**

The **Evo engine s architecture** is well-supported by the aftermarket, meaning you can further customize the bike with **performance chips, air intakes, or suspension upgrades** if desired. The **Onyx exhaust system** is also compatible with other performance mods.

---

### **Cons**

1. **High Cost**

The **base price of a new CVO model** is already premium, and adding **aftermarket upgrades like the Onyx exhaust and header heat clamps** will significantly increase the total cost. A **used CVO in the 2017-2025 range** with these mods may still be expensive, especially if it s in excellent condition.

2. **Maintenance and Repair Expenses**

Harley-Davidson engines, even the Evo, require **regular maintenance**, including **valve adjustments, timing belt replacements, and fuel system cleaning**. The **Onyx exhaust system**, while durable, may still require occasional **seal checks or heat shield replacements** if damaged. Additionally, **premium aftermarket parts can be costly** if repairs are needed.

3. **Weight and Handling**

Harley-Davidson bikes, including CVO models, are **heavy** (typically **over 700 lbs**). The **Evo engine is more powerful but also heavier**, which can affect **maneuverability and fuel efficiency**. The **Onyx exhaust system**, while lightweight compared to some aftermarket options, still adds a small amount of weight.

4. **Noise and Legal Considerations**

The **Onyx exhaust system** produces a **loud, aggressive sound**, which may not be legal in all areas due to **local noise ordinances**. Some regions have **strict decibel limits**, and exceeding them could result in **fines or mandatory muffler modifications**.

5. **Potential for Overbuilding**

While the **Evo engine is powerful**, pairing it with **high-flow exhausts like Onyx** without corresponding **fuel and ignition upgrades** (e.g., **performance air intake, ECU tuning**) could lead to **lean running or detonation issues**, potentially damaging the engine over time.

6. **Depreciation Over Time**

While CVO models hold value better than standard Harleys, **aftermarket exhaust systems (even high-quality ones like Onyx) may depreciate faster** if the bike is not maintained properly. If the bike is not ridden frequently, the **exhaust system could rust or corrode**, reducing its value.

7. **Limited Availability and Long Wait Times**

Harley-Davidson CVO models are **produced in limited quantities**, and **premium aftermarket exhaust systems** may have **long lead times** for installation. This could delay ownership if you re relying on a dealer or specialist for fitting.

8. **Potential for Modding Risks**

While the **Evo engine is robust**, aggressive modifications (e.g., **large bore kits, aggressive camshafts, or untested tuning**) could void warranties and risk **engine damage**. The **Onyx exhaust system**, while well-made, is not a "set-and-forget" mod it requires **proper installation and occasional maintenance**.

---

### **Conclusion**

Buying a **Harley-Davidson 47919 17-25 CVO with Onyx exhaust and header heat clamps** is a **significant investment** that offers **superior performance, customization, and prestige**. The **Evo engine s power**, combined with the **premium exhaust system**, makes for an **exciting and capable motorcycle**, especially for enthusiasts who value **high-performance riding and aesthetics**.

However, the **high cost, maintenance requirements, and potential legal/handling drawbacks** must be carefully considered. If you are **committed to Harley-Davidson ownership, enjoy customization, and can afford the upkeep**, this setup is an **excellent choice**. But if you prioritize **practicality, fuel efficiency, or budget-friendly ownership**, you may want to consider **alternative models or less aggressive mods**.

### **Recommendation**

- You are a **Harley-Davidson enthusiast** who wants the **best performance and customization** available.

- You **ride frequently** and can afford **regular maintenance and potential upgrades**.

- You **check local laws** regarding exhaust noise and ensure compliance.

- You **prefer a premium, high-end riding experience** over fuel efficiency or low weight.

- You are **concerned about long-term costs** (maintenance, insurance, depreciation).

- You **ride in areas with strict noise laws** that may restrict aftermarket exhausts.

- You **prioritize fuel economy or lighter weight** over raw power.

- You are **new to Harley-Davidson ownership** and want a **more budget-friendly entry point**.

**Final Verdict:** For the right buyer someone who **values performance, customization, and Harley-Davidson heritage** this setup is a **fantastic investment**. However, it is **not a casual purchase** and requires **financial responsibility and commitment to upkeep**. If you are serious about owning a **high-performance CVO with premium exhaust**, proceed with **thorough research, budgeting, and professional installation** to maximize enjoyment and longevity.

Details:

These Will Fit All 17-26 Touring, Street Glide, Ultra Road Electra Glide King that has 2 into Stock Exhaust. Please List Proper Reason for Return If you overlook Something or do not read the Good. Most Of The Stuff I Sell Is Used And It All Can Not Be Perfect. I will certainly be glad to help If can.

PICS SPEAK FOR their self's. If you do not See it in the photos, Then is included. Genuine Harley Davidson. This item is Real Genuine Parts, Not cheap China B.S.

OEM 17-25 Harley CVO Black Onyx Chrome Exhaust Header Heat Shields. Light Markings on shields. This comes as you see it in pics. Good Condition.

part #: 47919 price

• $418.95

specifications cyclemufflermo:

• for makes: Harley
• for years: 1925-2017
• brand: Harley-davidson
• mpn: 47919
• mounting style: Clamp-on
• machine type: Street Motorcycle
• color: Black Onyx Chrome
• material: Black Chrome, Black Onyx Chrome
• vintage part: No
• placement on vehicle: Exhaust
• type: Street Ultra Electra Road Glide King
• oe/oem part number: Oem
• manufacturer warranty: 1 Month
• features: Easy To Replace
• universal fitment: Yes
• finish: Black
• country of origin: United States

general cyclemufflermo:

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

returns cyclemufflermo:

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

offer cyclemufflermo:

• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• started: February 18, 2026

shipping cyclemufflermo:

• transit: 3-7 Days
• cost: $24.95
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• type: Fixed
• class: Standard

payments cyclemufflermo:

• credit card: Diners-club
• wallet: Google-pay
• other

seller cyclemufflermo:

• rating: 99.7%
• # reviews: 35383
• city: North Wilkesboro, North Carolina

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