fits model: Si, Road, Glide. make: Harley, Davidson. year: 2008–2009.

( Brand: S-s Cycle ), ( Manufacturer Part Number: MN/E2T6 ), ( Compatible Year: 2009 2008 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fltr Road Glide ), ( Bundle Description: 1 Pc Genuines S Cycle Air Cleaner Kit ), ( Type: Air Cleaner Kit ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )
The **Cycle MN/E2T6S Air Cleaner Kit** is a meticulously engineered upgrade designed to enhance the performance, efficiency, and longevity of the **2008 2009 Harley-Davidson FLTR Road Glide SI** and **MN/E2T6** models. Engineered by Cycle Engineering, a trusted name in high-performance motorcycle components, this kit replaces the stock air cleaner with a high-flow, multi-stage filtration system that maximizes airflow while maintaining superior particulate and dust exclusion. The core of this kit is its **E2T6S air cleaner**, a robust, dual-element design featuring a **high-density foam pre-filter** that captures larger debris before it reaches the main filter, ensuring cleaner air enters the engine. Behind it lies a **high-quality paper filter element**, optimized for precision filtration while allowing unrestricted airflow critical for maintaining optimal throttle response and power output. The kit also includes a **sealed gasket and mounting hardware**, ensuring a perfect, leak-free fit that preserves factory vacuum levels and prevents unwanted noise or contamination. Beyond performance gains, the Cycle MN/E2T6S kit contributes to engine protection by reducing carbon buildup and intake clogging, which is especially beneficial for riders who frequently operate in dusty or off-road conditions. Whether cruising on the highway or navigating twisty backroads, this air cleaner kit delivers a noticeable improvement in engine breathing, fuel efficiency, and overall reliability, making it an essential upgrade for enthusiasts seeking both performance and longevity from their Harley-Davidson.
### **Pros and Cons of buying a Cycle MN/E2T6S Air Cleaner Kit for a 2008-2009 Harley-Davidson FLTR Road Glide SI**
#### **Pros**
1. **Improved Airflow and Performance**
The Cycle MN/E2T6S air cleaner kit is designed to enhance airflow into the engine, which can lead to better throttle response and slightly improved horsepower and torque. This is particularly noticeable in stock or mildly modified engines where airflow restrictions are a limiting factor.
2. **Enhanced Durability and Longevity**
The kit features high-quality materials, including reinforced silicone seals and a robust frame, which are more durable than stock air filters. This reduces the likelihood of leaks or premature wear, especially in dusty or harsh riding conditions.
3. **Easier Maintenance**
The Cycle air cleaner kit is designed for quick and straightforward installation and removal. The modular design allows for easy cleaning or replacement of the filter element, saving time and effort compared to some aftermarket alternatives that require disassembly of the entire system.
4. **Compatibility with Performance Modifications**
If you plan to add other performance upgrades (e.g., exhaust headers, camshafts, or fuel system tweaks), the Cycle kit provides a solid foundation for improved airflow without causing bottlenecks. It is also compatible with other Cycle products, such as intake systems or exhaust headers, if you decide to expand your modifications later.
5. **Reduced Restriction Compared to Stock**
Stock air cleaners on Harley-Davidson engines, particularly on the FLTR platform, are often criticized for being overly restrictive. The Cycle kit addresses this by providing a more open airflow path while still maintaining adequate filtration for most riding conditions.
6. **Positive Community Feedback**
The Cycle MN/E2T6S kit has received favorable reviews from Harley-Davidson owners, particularly those who prioritize reliability and performance. Many riders report noticeable improvements in engine breathing and a reduction in vacuum leaks, which can contribute to smoother operation.
7. **Minimal Tuning Required**
Unlike some high-flow air cleaner kits that require significant tuning (e.g., remapping or fuel system adjustments), the Cycle kit is designed to work well with stock ECUs or mild tune kits. This makes it a practical choice for riders who want performance gains without extensive modifications.
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#### **Cons**
1. **Cost Relative to Stock**
The Cycle MN/E2T6S kit is more expensive than a basic replacement air filter, though it is often priced competitively with other high-quality aftermarket kits. For riders on a tight budget, this may be a deterrent, especially if they are unsure whether they will notice significant performance improvements.
2. **Potential for Increased Dust Ingestion (Without Proper Use)**
While the kit improves airflow, it also allows more dust and debris into the engine if not used correctly. Riders who frequently travel on unpaved roads or in dusty environments must ensure the filter element is cleaned or replaced regularly to avoid long-term damage to the engine.
3. **Limited Horsepower Gains for Stock Engines**
On a stock 2008-2009 FLTR Road Glide SI, the performance gains from the Cycle kit may be modest. The engine is already well-tuned for reliability, and significant power increases typically require complementary modifications (e.g., exhaust, fueling, or camshafts). Expect improvements in throttle response and smoothness rather than dramatic horsepower jumps.
4. **Installation Complexity for Some Riders**
While the Cycle kit is designed for ease of installation, it still requires some mechanical skill to fit properly. Riders who are not comfortable with basic motorcycle maintenance may need to seek professional help, which adds to the overall cost.
5. **Aesthetic Considerations**
The Cycle air cleaner kit is functional but not as visually appealing as some aftermarket options. Harley-Davidson enthusiasts who prioritize a stock or custom look may find the kit less desirable, though it can be paired with other cosmetic upgrades if aesthetics are a concern.
6. **Potential for Vacuum Leaks**
If the kit is not installed correctly or if seals degrade over time, vacuum leaks can occur. These leaks can cause rough idling, hesitation, or reduced power. Regular inspections and maintenance are necessary to prevent this issue.
7. **Compatibility with Aftermarket Intakes**
While the Cycle kit is a standalone improvement, pairing it with an aftermarket intake (e.g., a full can or reverse-flow system) may require additional tuning or adjustments. Riders considering such combinations should research compatibility thoroughly to avoid issues.
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### **Conclusion and Recommendation**
The **Cycle MN/E2T6S air cleaner kit** is a solid choice for owners of the 2008-2009 Harley-Davidson FLTR Road Glide SI who want to improve airflow, reduce restriction, and enhance engine performance without undertaking major modifications. It strikes a balance between durability, ease of maintenance, and noticeable gains in throttle response and smoothness.
**For whom is this kit ideal?**
- Riders who want a **reliable, high-quality upgrade** without extensive tuning.
- Those who prioritize **durability and longevity** over extreme performance gains.
- Owners who may plan to add **complementary performance parts** (e.g., exhaust headers, fuel system upgrades) in the future.
- Enthusiasts who value **ease of installation and maintenance**.
**For whom might this kit be less suitable?**
- Riders on a **tight budget** who are unsure about the value of airflow improvements.
- Those who prefer **stock or minimal modifications** and do not want to alter the bike s appearance.
- Owners who frequently ride in **extremely dusty conditions** without proper filter maintenance.
- Enthusiasts who seek **dramatic power gains** and are willing to invest in a full performance package (e.g., remapping, fuel injection upgrades).
**Final Recommendation:**If you are looking for a **practical, high-quality air cleaner kit** that delivers measurable improvements in airflow and engine performance for your 2008-2009 FLTR Road Glide SI, the **Cycle MN/E2T6S kit is an excellent choice**. It is well-regarded in the Harley community, offers durability, and integrates well with other potential upgrades. Pair it with regular maintenance (filter cleaning/replacement) to ensure long-term reliability. For riders who want more aggressive performance gains, consider pairing this kit with other modifications (e.g., exhaust headers or a tune), but expect to invest more time and money for significant results.
Cycle Air Cleaner Kit for 2008 - 2009 Harley Davidson FLTR Road Glide - Si: Status: In Stock.