VANCE HINES MN-CB71 Skullcap Fxstc Aq MN/CB71 VO2

( Brand: Vance Hines ), ( Manufacturer Part Number: MN/CB71 ), ( Color: Black ), ( Compatible Year: 2010 2009 2008 2007 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxstc Softail Custom ), ( Bundle Description: 1 Pc Genuine Vance Hines Vo2 Skullcap Crown ), ( Type: Vo2 Skullcap Crown ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review VANCE HINES Mn/cb71 And Vo2 Skullcap Harley Davidson Fxstc Aq fits CROWN SOFTAIL 2007–2010

The **Vance Hines MN/CB71 VO2 Skullcap Crown** is a meticulously crafted, high-performance aftermarket exhaust system designed exclusively for the **2007 2010 Harley-Davidson FXSTC Softail AQ**, delivering an unmistakable blend of raw power, aggressive styling, and uncompromising engineering. Engineered by Vance Hines, a brand synonymous with precision and innovation in motorcycle exhaust solutions, this **VO2 (Variable Orifice Valve) Skullcap Crown** is not just an upgrade it s a statement of intent for riders who demand both form and function. The crown itself is a striking, angular piece forged from **high-grade stainless steel**, featuring a bold, skeletal design that accentuates the FXSTC s already aggressive stance while maintaining a sleek, modern aesthetic. Its **dual-tone finish** often a combination of matte black and polished stainless adds a touch of sophistication, ensuring it stands out against the factory exhaust while blending seamlessly with the bike s custom or stock appearance.

Underneath its striking exterior lies a **high-flow, dual-chamber system** that maximizes exhaust efficiency, allowing for a more aggressive exhaust note while reducing backpressure to enhance engine breathing. The **VO2 technology** incorporated into this system is a game-changer, dynamically adjusting the exhaust flow based on throttle position and RPM. At lower speeds, the system operates in a more restrictive mode, refining the idle and mid-range torque for a smoother, more controlled ride. However, as you push the throttle wide open, the **variable orifice valves** open fully, unleashing a **deep, growling exhaust tone** that resonates with the FXSTC s legendary V-twin character. This adaptive performance ensures that whether you re cruising down the highway or tearing through a twisty backroad, the exhaust delivers the right balance of power and refinement.

Installation of the **MN/CB71 VO2 Skullcap Crown** is straightforward yet precise, requiring the removal of the factory exhaust system and the careful fitting of the new crown, which includes **high-quality gaskets and clamps** to ensure a secure, leak-free seal. The system is designed to be **drop-in compatible**, meaning no modifications to the frame or engine are necessary, making it an ideal choice for riders who want to enhance their bike s performance without extensive customization. The **skullcap design** not only improves airflow but also adds a **custom, high-end look** that elevates the FXSTC s already imposing presence, making it a favorite among riders who appreciate both aesthetics and performance.

Beyond its technical prowess, the **Vance Hines VO2 Skullcap Crown** is built to last, constructed from **304-grade stainless steel** that resists corrosion and maintains its finish under the harshest conditions. The system is also **fully compatible** with modern emissions standards, ensuring that it can be installed without triggering check engine lights or compromising compliance. Whether you re a purist looking to refine the FXSTC s stock exhaust tone or a performance enthusiast seeking an edge in power delivery, this crown delivers a **unique blend of aggression and precision** that sets it apart from conventional aftermarket options. For riders who refuse to compromise on either style or substance, the **Vance Hines MN/CB71 VO2 Skullcap Crown** is the ultimate choice a piece that doesn t just fit the FXSTC, but makes it even more unforgettable.

### Pros and Cons of Buying a Vance Hines MN/CB71 VO Skullcap Crown for a 2007-2010 Harley-Davidson FXSTC Softail

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#### **Pros**

1. **Enhanced Engine Performance**

The VO Skullcap crown is designed to improve airflow and exhaust velocity, which can increase horsepower and torque. For a Harley FXSTC, this modification can make the engine breathe better, especially at higher RPMs, leading to a more responsive throttle and improved acceleration.

2. **Improved Exhaust Note**

The skullcap crown is known for producing a deeper, more aggressive exhaust tone. This can give the FXSTC a more aggressive and sporty sound, which is appealing to riders who enjoy a louder, more commanding exhaust note.

3. **Lightweight Construction**

The skullcap crown is made from lightweight materials, reducing the overall weight of the exhaust system. This can contribute to better handling and agility, particularly noticeable in the FXSTC s lighter weight class compared to heavier touring bikes.

4. **Compatibility and Fitment**

The Vance Hines VO Skullcap crown is specifically designed for Harley-Davidson engines, including the Evolution and Twin Cam platforms used in the FXSTC. It fits seamlessly with the stock exhaust headers and primary piping, making installation relatively straightforward.

5. **Durability and Quality**

Vance Hines is a reputable manufacturer known for producing high-quality exhaust components. The skullcap crown is built to withstand the stresses of high-performance riding, though proper maintenance is still required to ensure longevity.

6. **Aftermarket Support**

The VO Skullcap crown is part of a well-supported aftermarket system. Vance Hines offers a range of related components (e.g., headers, mufflers, and full exhaust systems) that can be easily integrated into a custom setup.

7. **Potential for Further Modifications**

Upgrading to a skullcap crown can serve as a stepping stone for further exhaust modifications. Once installed, riders can later add a high-flow muffler or a full aftermarket exhaust system for even greater performance gains.

8. **Aesthetic Appeal**

The skullcap crown has a distinctive, aggressive look that can enhance the visual appeal of the FXSTC. It stands out from stock exhaust systems and can give the bike a more customized and sporty appearance.

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#### **Cons**

1. **Cost**

The Vance Hines VO Skullcap crown is not a cheap modification. Depending on the specific model and whether additional components (like headers or mufflers) are required, the total cost can range from $300 to $600 or more. This is a significant investment for a single component, especially when considering that other modifications (e.g., headers, ECU tuning) may be needed to fully realize its potential.

2. **Installation Complexity**

While the skullcap crown itself is relatively simple to install, the process may require removing the stock exhaust system, which can be labor-intensive. Additionally, if the bike has not been previously modified, the installation may require welding or machining to ensure a proper fit. This could necessitate professional help, adding to the overall cost.

3. **Potential for Increased Heat**

The skullcap crown can increase exhaust gas temperatures due to improved airflow and reduced restriction. While this can improve performance, it may also lead to increased heat buildup in the exhaust system, which could affect the longevity of other components (e.g., headers, gaskets, or mufflers) if not properly managed.

4. **Legal Restrictions**

Depending on your location, modifications to the exhaust system may be subject to legal restrictions. Some regions have noise ordinances or emissions regulations that could render the skullcap crown illegal to use on public roads. Always check local laws before making modifications.

5. **ECU Tuning May Be Required**

While the skullcap crown can improve performance on its own, pairing it with an ECU tune (e.g., from a company like PowerVision or Haltech) can unlock even greater gains. However, tuning is an additional cost and may require professional assistance to avoid damaging the engine or other components.

6. **Potential for Backfires or Rough Idling**

Improving exhaust flow can sometimes lead to minor issues like backfires or rough idling, particularly if the bike s fueling system is not optimized. This is usually resolved with tuning or minor adjustments to the ignition timing.

7. **Limited Performance Gains Without Additional Mods**

The skullcap crown alone may not provide dramatic performance improvements, especially on a stock FXSTC. To see significant gains, it should be paired with other modifications such as high-flow headers, a performance muffler, or an ECU tune. This means the rider may need to invest in additional parts to fully benefit from the skullcap crown.

8. **Potential for Reduced Reliability**

While Vance Hines components are generally durable, the skullcap crown is not a "drop-in" replacement for the stock exhaust system. It requires careful installation and may put additional stress on other parts of the exhaust system. Poor installation or neglect could lead to leaks, cracks, or other issues over time.

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### **Conclusion**

The Vance Hines MN/CB71 VO Skullcap crown is a worthwhile modification for a 2007-2010 Harley-Davidson FXSTC Softail if you are looking to improve exhaust flow, enhance performance, and achieve a more aggressive sound. It is particularly appealing to riders who enjoy tuning their bikes for better throttle response and a sportier exhaust note. However, the modification comes with notable drawbacks, including a high cost, potential legal issues, and the need for additional components (like headers or tuning) to fully realize its benefits.

If you are already planning to invest in other exhaust or engine modifications (e.g., headers, mufflers, or tuning), the skullcap crown can be a logical next step. However, if you are on a budget or only want minor improvements, it may not be the most cost-effective choice. Additionally, if you ride in an area with strict noise laws, you should verify that the modification complies with local regulations before purchasing.

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### **Recommendation**

- You are committed to a performance-oriented exhaust upgrade and are willing to invest in additional components (headers, mufflers, or tuning) to maximize gains.

- You enjoy a deeper, more aggressive exhaust note and want to improve throttle response.

- You have experience with bike modifications or are prepared to seek professional help for installation.

- Your local laws allow for such modifications without restrictions.

- You are on a tight budget and cannot afford additional modifications to complement the skullcap crown.

- You are unsure about the legal implications of the modification in your area.

- You prefer to keep your bike stock or only make minor cosmetic changes.

- You lack experience with exhaust system modifications and are not willing to learn or hire a professional for installation.

For the best results, pair the skullcap crown with a high-flow header and a performance muffler (e.g., Vance Hines or Akrapovic) and consider tuning the ECU to optimize performance and fueling. Always prioritize safety and legality when modifying your bike.

Details:

part #: mncb71 price

• $107.34

specifications intakefuelmotorcycle:

• for models: Crown, Softail
• for makes: Harley, Davidson
• for years: 2007-2010
• brand: Vance Hines
• mpn: Mn/cb71
• color: Black
• compatible year: 2010 2009 2008 2007
• compatible make: Harley Davidson
• compatible model: Fxstc Softail Custom
• bundle description: 1 Pc Genuine Vance Hines Vo2 Skullcap Crown
• type: Vo2 Skullcap Crown
• core charge: Free No Core Charge
• fitment type: Direct Replacement

offer intakefuelmotorcycle:

• options: Ship-to-home
• started: May 20, 2026
• quantity: 1
• availability: In Stock
• sold: 0

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• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

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• # reviews: 23036
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