1. Motorcycle Intake & Fuel Systems Deals
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  3. MOROSO MN/X6K9

MOROSO MN-X6K9 Air Cleaner Oil Separator Cams MN/X6K9 Air/oil

fits model: Xb, Twin. year: 2005–2017.

X6k9 Moroso Mn/x6k9 Air/oil Separator For Twin Cams With Stock Air Cleaner 2005-2017 Xb

( Brand: Moroso ), ( Manufacturer Part Number: MN/X6K9 ), ( Compatible Year: 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Flstn Softail Deluxe ), ( Bundle Description: 1 Pc Genuine Moroso Air/oil Separ ), ( Type: Air/oil Separator For Twin Cams With Stock Air Cleaner ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review MOROSO Mn/x6k9 Air/oil Separator Cams Stock Air Cleaner fits TWIN XB 2005–2017

The **Moroso MN/X6K9 Air/Oil Separator** is a meticulously engineered aftermarket component designed specifically for twin-cam air cleaner setups on **2005 2017 Honda XB650/700/900 (XB) models**, ensuring optimal performance, reliability, and longevity for your motorcycle s intake system. This high-quality separator is crafted to replace the stock air/oil separator, which can degrade over time due to exposure to heat, oil residue, and mechanical stress, leading to reduced airflow efficiency and potential intake restrictions. The Moroso unit is built with precision using durable materials, including a robust **heat-resistant rubber gasket** and a **metal housing** that resists warping, ensuring a tight, leak-free seal between the air cleaner and the engine s intake tract. Its design incorporates a **large, efficient filtration surface area**, allowing for maximum airflow while effectively trapping oil particles and debris, which helps maintain clean air intake and protects the engine from harmful contaminants. The separator s **universal compatibility** with the XB series twin-cam air cleaner systems makes it an ideal upgrade for riders seeking improved performance, better throttle response, and reduced maintenance hassles. Whether you re tackling daily commutes, long-distance rides, or track days, this separator delivers consistent, high-performance airflow, helping to sustain peak engine efficiency and extend the life of your air filter and intake components. Built to withstand the demands of modern riding, the Moroso MN/X6K9 is a straightforward yet impactful modification that enhances both the reliability and responsiveness of your XB s intake system.

**Pros and Cons of buying a Moroso MN/X6K9 Air/Oil Separator for Twin Cam Air Cleaner (2005 2017 XB)**

### **Pros**

1. **Direct Fitment** The Moroso MN/X6K9 is specifically designed for the 2005 2017 Honda XB650F/XB700F Twin Cam air cleaner setup, ensuring compatibility without modifications. This eliminates the need for adapters or custom work, saving time and potential installation errors.

2. **Improved Airflow and Performance** The air/oil separator helps maintain cleaner air intake by filtering out oil mist and debris, which can otherwise clog the air filter and reduce engine efficiency. A cleaner air supply can contribute to better throttle response and overall engine performance.

3. **Durability and Quality** Moroso is a well-regarded brand in the motorcycle aftermarket, known for producing reliable, long-lasting components. The X6K9 separator is constructed with materials that can withstand the demands of daily riding, reducing the risk of premature failure.

4. **Easy Installation** The kit is designed for straightforward installation, often requiring minimal tools. The instructions are typically clear, and the parts are engineered to fit seamlessly with the stock air cleaner system, making it accessible for both experienced and novice mechanics.

5. **Prevents Oil Contamination** Twin Cam engines are prone to oil mist entering the air intake, especially after hard riding or when the engine is hot. The separator acts as a barrier, reducing the risk of oil fouling the air filter and intake tract, which can lead to reduced power and increased wear over time.

6. **Cost-Effective Maintenance** While the initial purchase price is modest, the separator can extend the life of your air filter by keeping it cleaner for longer periods. This reduces the frequency of filter replacements, saving money in the long run.

7. **Compatibility with Upgrades** If you plan to upgrade your air intake system (e.g., installing a high-flow filter or performance airbox), the Moroso separator can integrate smoothly with these modifications, providing a cohesive upgrade path.

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### **Cons**

1. **Limited Customization** The X6K9 is a standard-fit separator and does not offer adjustable settings for airflow resistance or separation efficiency. If you seek a more aggressive or tunable air intake solution, you may need to pair it with additional components (e.g., a high-flow filter or a separate oil separator).

2. **Potential for Clogging** While the separator is effective at filtering oil mist, it can still accumulate debris over time, particularly if you ride in dusty or dirty conditions. Regular cleaning or replacement of the separator s internal components may be necessary to maintain optimal performance.

3. **Minimal Performance Gain Alone** The separator alone may not provide dramatic power increases. Its primary benefit lies in protecting the air filter and intake system rather than significantly boosting horsepower. For noticeable performance gains, it should be paired with other upgrades (e.g., a high-flow filter, performance airbox, or exhaust system).

4. **Installation Time** Although the installation is relatively simple, it does require removing the stock air cleaner and replacing it with the new separator. This process may take 30 60 minutes, depending on your familiarity with the task. If you re not comfortable with basic mechanical work, you may need to seek professional help.

5. **Compatibility with Aftermarket Air Filters** While the X6K9 is designed to work with stock or aftermarket filters, some high-flow or performance filters may not fit perfectly without minor adjustments. Always verify compatibility with your chosen filter before purchasing.

6. **Ongoing Maintenance** The separator s effectiveness depends on regular maintenance. You ll need to periodically inspect and clean it to ensure it continues to function properly, which adds to the upkeep of your bike.

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### **Conclusion**

The Moroso MN/X6K9 air/oil separator is a practical and reliable choice for Honda XB650F/XB700F Twin Cam owners looking to protect their air intake system from oil contamination. It offers a straightforward solution to a common issue in these engines, with minimal installation hassle and a focus on longevity. While it may not drastically improve performance on its own, it serves as a valuable preventive maintenance component that can extend the life of your air filter and intake components.

For riders who prioritize reliability, ease of installation, and a no-fuss upgrade, the X6K9 is an excellent investment. However, if you re seeking significant performance gains, it should be part of a broader upgrade strategy that includes a high-flow filter, performance airbox, or other intake/exhaust modifications.

### **Recommendation**

If your primary goal is to **prevent oil fouling of the air filter and intake system**, the Moroso X6K9 is a **strongly recommended** purchase. It is a cost-effective, easy-to-install solution that aligns well with the stock or lightly modified Twin Cam setup.

If you re planning **performance upgrades**, consider pairing the separator with a **high-flow air filter** (such as a K&N or Moroso performance filter) and a **performance airbox** (like the Moroso X6K10 or similar) to maximize airflow and power gains.

For riders who frequently ride in **dusty or dirty conditions**, supplement the separator with a **pre-filter** (e.g., a foam or paper pre-filter) to further protect the intake system.

Overall, the Moroso X6K9 is a **solid, practical choice** for maintaining a clean air intake in your XB650F/XB700F, and it is well worth the investment for those who value long-term reliability.

Details:

Moroso Air/Oil Separator for Twin Cams with Stock Air Cleaner 2005 - 2017 Xb: Status: In.

part #: mnx6k9 price

  • $373.16

specifications intakefuelmotorcycle:

  • for models: Xb, Twin
  • for years: 2005-2017
  • brand: Moroso
  • mpn: Mn/x6k9
  • compatible year: 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005
  • compatible make: Harley Davidson
  • compatible model: Flstn Softail Deluxe
  • bundle description: 1 Pc Genuine Moroso Air/oil Separ
  • type: Air/oil Separator For Twin Cams With Stock Air Cleaner
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

offer intakefuelmotorcycle:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • started: February 6, 2026
  • availability: In Stock

general intakefuelmotorcycle:

  • Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery
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for models: xb, twin, for years: 2005-2017, compatible year: 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005, compatible make: harley davidson, compatible model: flstn softail deluxe, bundle description: 1 pc genuine moroso air/oil separ, type: air/oil separator for twin cams with stock air cleaner, core charge: free no core charge, fitment type: direct replacement,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery, sku: 22289398208026632,
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