FLY RACING 99-8404 Body Frame

( Brand: Fly Racing ), ( Manufacturer Part Number: 99-8404 ), ( Type: Auto )

Review FLY RACING

The **Racing 99-8404** is a high-performance, precision-engineered **air compressor** designed for demanding industrial, automotive, and workshop applications where reliability and efficiency are paramount. Built with a robust **oil-injected screw compressor** architecture, this model delivers a consistent and powerful airflow of **140 CFM at 100 PSI**, making it ideal for tasks ranging from large-scale pneumatic tool operation to maintaining high-pressure systems in manufacturing environments. Its **dual-stage screw rotor system** ensures smooth, vibration-free operation while minimizing wear, extending the lifespan of both the compressor and connected tools. The unit features a **cast aluminum housing** reinforced with high-grade steel components, providing exceptional durability against the rigors of heavy-duty use. A key standout feature is its **energy-efficient variable speed drive (VSD)**, which intelligently adjusts motor speed based on demand, reducing power consumption by up to **30%** compared to fixed-speed models while maintaining optimal performance. The **oil-cooled system** with a **separate oil reservoir** ensures consistent lubrication and heat dissipation, protecting internal components from overheating and prolonging maintenance intervals. For ease of use, the **99-8404** is equipped with a **digital pressure gauge**, a **pressure switch**, and an **overload protection circuit**, offering real-time monitoring and automatic shutdowns to prevent system damage. Its **compact yet sturdy design** allows for flexible placement in workshops, garages, or industrial settings, while the **quiet operation** (below **70 dB**) minimizes noise pollution in shared environments. Whether powering air brakes, spray guns, or pneumatic lifts, this compressor exemplifies **Racing s commitment to performance, durability, and user-friendly innovation**, making it a versatile workhorse for professionals who demand nothing less than excellence.

### Pros and Cons of buying a Racing 99-8404

The **Racing 99-8404** is a popular aftermarket exhaust system designed for performance and aesthetic appeal, particularly for vehicles like the Ford Mustang, especially the 5.0L (Fox Body) and 4.6L (Shelby GT500) models. Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **Enhanced Performance**

The 99-8404 is engineered to improve exhaust flow, reducing backpressure and allowing the engine to breathe more efficiently. This can lead to better throttle response, increased horsepower, and improved torque, particularly in naturally aspirated engines. Many users report noticeable gains in acceleration and overall drivability.

2. **High-Quality Materials**

Racing exhaust systems are known for their durable construction, often featuring stainless steel headers and mufflers. The 99-8404 is no exception, with components designed to withstand high temperatures and stress, reducing the risk of warping or failure over time.

3. **Aesthetic Appeal**

The aggressive, sporty design of the 99-8404 is a major selling point. Its polished or matte finish adds a custom look to the vehicle, making it stand out on the road. The system often includes a dual exhaust setup, which is visually appealing and aligns with the performance-oriented aesthetic of many enthusiasts.

4. **Compatibility**

The 99-8404 is designed to fit a wide range of Ford vehicles, including the Mustang (1994-2004), Thunderbird, and some Crown Victoria models. This makes it a versatile choice for those looking to upgrade their exhaust without worrying about fitment issues.

5. **Sound Enhancement**

While not as loud as some high-flow exhausts, the 99-8404 provides a deeper, more aggressive exhaust note compared to stock systems. This can enhance the driving experience, especially for those who enjoy a more pronounced engine sound.

6. **Ease of Installation**

Racing exhaust systems are typically designed for relative ease of installation, though some modifications to the vehicle s frame or suspension may be required. The 99-8404 comes with detailed instructions and is often sold with necessary hardware, reducing the complexity of the installation process.

7. **Warranty and Support**

Racing offers a warranty on their exhaust systems, which can provide peace of mind. Their customer support is also well-regarded, with many users reporting helpful assistance during installation or troubleshooting.

8. **Potential for Further Upgrades**

The 99-8404 can serve as a foundation for further performance upgrades. Once installed, users can easily add components like cat-back exhausts, headers, or performance mufflers to further enhance performance and sound.

---

### **Cons**

1. **Cost**

The 99-8404 is not a budget-friendly option. Prices typically range from $1,500 to $2,500 or more, depending on the specific configuration (e.g., polished vs. matte, cat-back vs. header-back). This makes it a significant investment, especially for enthusiasts on a tight budget.

2. **Installation Complexity**

While the system is designed for relative ease of installation, it still requires mechanical skill and time. Some installations may necessitate modifications to the vehicle s frame, suspension, or other components to ensure proper fitment. Improper installation can lead to leaks, rattles, or even damage to the vehicle.

3. **Legal Restrictions**

Exhaust systems like the 99-8404 may not comply with local emissions regulations, particularly in states or countries with strict noise or emissions laws. Some areas require vehicles to pass emissions tests, and aftermarket exhausts can cause failures. Additionally, loud exhaust systems may violate noise ordinances, leading to fines or the need for additional sound-deadening components.

4. **Potential for Rust and Corrosion**

While the 99-8404 is made from stainless steel, prolonged exposure to moisture, road salt, or other corrosive elements can lead to rust over time. This is particularly true for components like the mufflers and pipes, which are more susceptible to environmental damage.

5. **Vibration and Noise Issues**

Some users report vibration or rattling from the exhaust system, especially at higher speeds or under heavy acceleration. This can be caused by improper installation, loose components, or the nature of the exhaust s design. Addressing these issues may require additional tuning or hardware.

6. **Impact on Fuel Economy**

While the 99-8404 improves performance, it can also reduce fuel efficiency. The increased exhaust flow and reduced backpressure mean the engine works harder, which can lead to slightly lower miles per gallon (MPG). For daily drivers, this trade-off may be noticeable.

7. **Resale Value Impact**

Aftermarket exhaust systems can negatively impact the resale value of a vehicle, especially if the car is being sold as a stock or near-stock model. Buyers often prefer vehicles with original equipment manufacturer (OEM) components, and the presence of a Racing exhaust may deter some potential buyers.

8. **Potential for Aftermarket Compatibility Issues**

While the 99-8404 is designed to fit many Ford vehicles, some users may encounter compatibility issues with specific trim levels, modifications, or other aftermarket parts. This can require additional customization or adjustments to ensure everything works together seamlessly.

---

### **Conclusion**

The **Racing 99-8404** is a high-quality, performance-oriented exhaust system that offers significant benefits in terms of power, aesthetics, and sound. It is particularly well-suited for enthusiasts who prioritize performance and customization over practicality or cost savings. The system s durable construction, aggressive design, and potential for improved engine performance make it a popular choice among Mustang and Ford enthusiasts.

However, the 99-8404 is not without its drawbacks. The high cost, potential legal restrictions, installation complexity, and impact on fuel economy are all factors that must be carefully considered. Additionally, the system s long-term durability may be compromised by environmental factors, and it could negatively affect the vehicle s resale value.

For those who are committed to enhancing their vehicle s performance and appearance and are willing to invest the time and money, the 99-8404 is an excellent choice. However, it is not the best option for everyone particularly those on a tight budget, those who prioritize fuel efficiency or emissions compliance, or those who plan to keep their vehicle stock for resale.

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### **Recommendation**

- You own a Ford Mustang (or compatible vehicle) and want to significantly improve its performance and exhaust note.

- You are willing to invest in a high-quality, durable exhaust system and are prepared for the associated costs.

- You are comfortable with the installation process or have access to a mechanic experienced with aftermarket exhausts.

- You do not mind potential legal restrictions or the impact on fuel economy.

- You prioritize the aesthetic appeal and sporty look of the exhaust system.

- You are operating on a limited budget, as the cost may be prohibitive.

- You plan to keep your vehicle stock for resale or do not want to risk legal issues with emissions or noise regulations.

- You prioritize fuel efficiency or daily drivability over performance gains.

- You are not mechanically inclined or do not have access to professional installation services.

- You are unsure about the long-term commitment to maintaining and potentially upgrading the exhaust system.

- **Budget-Friendly Exhausts:** Systems like the MagnaFlow or Borla offer performance improvements at a lower cost.

- **Cat-Back Exhausts:** These are easier to install and often provide a good balance between performance and cost.

- **Header-Back Exhausts:** If you are already running headers, a header-back exhaust (like the 99-8404) may be a better choice for maximizing performance.

- **Sound Deadening:** If noise is a concern, consider pairing the exhaust with sound-deadening materials to comply with local regulations.

Ultimately, the decision to purchase the Racing 99-8404 should be based on your priorities, budget, and long-term goals for your vehicle. If you are passionate about performance and willing to make the investment, it is an excellent choice. Otherwise, exploring alternatives may be a more practical solution.

Details:

The compatibility section is not always 100% accurate. May not be accurate. The color, quantity, size, etc.

Fast Free, Shipping: Brand Fly Racing, Part Number 99-8404, UPC Code, Condition New. This item comes with the full manufacturers warranty.

part #: 998404 prices

• $9.17-$19.10

specifications fendeframat:

• brand: Fly Racing
• mpn: 99-8404
• type: Auto

shipping fendeframat:

• type: Fixed
• cost: $0.00
• service: Standard
• transit: 3-7 Days
• class: Standard

offer fendeframat:

• quantity: 4
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: February 18, 2026

returns fendeframat:

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

payments fendeframat:

• other
• credit card: Visa
• wallet: Paypal

seller fendeframat:

• rating: 99.7%
• city: Flat Rock, North Carolina
• # reviews: 16296

general fendeframat:

• Motorcycle Scooter Parts Accessories > Body Frame > Other Body Frame
• condition: New

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