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  3. ROUSH PERFORMANCE 421389

ROUSH PERFORMANCE 421389 Supercharger Kit Phase 844764004382 525/540HP 625HP

fits model: 525. year: 2011–2014.

421389 Roush Performance 2011-2014 Supercharger Upgrade Kit Phase 2 525/540hp To 625hp

( Brand: Roush Performance ), ( Manufacturer Part Number: 421389 ), ( Type: Supercharger Upgrade Kit ), ( Performance Part: Yes ), ( UPC: 844764004382 )

Review ROUSH PERFORMANCE Supercharger Upgrade Kit Phase 525/540hp To 625hp fits 525 2011–2014

The Roush Performance 421389 Supercharger Kit, specifically designed for 2011 to 2014 Ford Mustang GT and Shelby GT500 models, is an exceptional upgrade that delivers increased horsepower and torque for enhanced driving performance. This Phase 525/540hp (for Mustang GT) and 625hp (for Shelby GT500) supercharger system is a testament to Roush's commitment to delivering high-performance solutions for Ford enthusiasts.

The Roush supercharger system is based on the widely renowned 2.3L Eaton TVS rotor design, renowned for its compact size, quiet operation, and excellent boost response. The supercharger is mounted directly atop the engine using a robust, cast-aluminum intake manifold - engineered not only for optimal airflow but also for a factory-like installation.

This kit includes a comprehensive list of features and components that are meticulously designed to work in harmony, ensuring a seamless integration with the vehicle's factory systems:

1. 2.3L Eaton Roots-Type Supercharger: The supercharger features a 2.3L displacement, six-lobe rotor design and twin four-lobe, high-efficiency impellers.

2. Air-to-Air Intercooler: A large, high-capacity air-to-air intercooler - borrows cooling capacity from the stock coolant system, maintaining optimal intake air temperature for optimal performance.

3. High-Flow Air Intake System: The air intake system includes a high-flow cone air filter and a polished stainless steel T-304 mandrel-bent intake tube.

4. Programmable Engine Calibration: This kit includes custom calibrationMapping that accounts for flex fuel, wall fueling, knock sensors, road speed sensors, and manifold absolute pressure sensor. It is designed to optimize engine performance, providing a smooth and consistent power delivery.

5. Programmable ECU: The kit includes a programmable ECU that allows for adjustability in boost control, fuel delivery, timing, and other key parameters to further fine-tune the vehicle's performance, whether for everyday driving or track use.

6. High-Performance Components: The system includes a 60-pound-per-hour fuel pump, heavy-duty fuel injectors, 10-quart fuel tank, and all required electrical connectors and wiring.

7. Performance Monitoring: The kit is equipped with a vented cool-down coolant tank and boost gauges that provide real-time boost pressure monitoring, ensuring optimal performance and allowing drivers to adjust according to their preferences.

8. Installation: Roush offers detailed installation instructions, and many of the necessary upgrade components are ready-to-bolt or plug-and-play, making this an accessible modification for DIY-inclined enthusiasts.

The Roush Performance 421389 Supercharger Kit delivers increased power and torque, enhancing acceleration, top speed, and overall driving excitement, while maintaining factory-like drivability. It's a testament to Roush's commitment to performance, reliability, and delivering an exceptional driving experience for Ford Mustang and Shelby GT500 owners.

Pros and Cons of Installing a Roush Performance Supercharger Kit (421389, 2011-2014, 525/540hp 625hp)

**Pros:**

1. **Power Gain:** The primary benefit of installing a Roush Performance supercharger kit is the significant increase in power. Depending on the specific model, this kit can provide power gains ranging from 525 to 625 horsepower.

2. **Improved Acceleration:** The increased power translates to improved acceleration, making your vehicle quicker off the line and faster in the mid-range.

3. ** enhancement:** Boosted engines provide better engine response, allowing for more responsive and smoother power delivery.

4. **Customization:** This supercharger kit is specifically designed for specific Ford models (2011-2014) and offers an attractive, high-performance option for those desiring to customize their vehicle.

5. **Driveability:** The supercharger kit offers improved driveability, with a noticeable increase in power and responsiveness.

**Cons:**

1. **Cost:** The Roush Performance supercharger kit is a high-performance upgrade and comes with a substantial price tag.

2. **Installation Complexity:** Installing the kit requires significant mechanical skill and expertise. In some cases, professional installation may be necessary, adding to the overall cost.

3. **Noise:** Superchargers produce a distinct sound due to the compression of air. While some may find the noise appealing, others may find it to be intrusive.

4. **Elevated Fuels Consumption:** With the increased power and performance, the vehicle's fuel consumption may increase, potentially leading to higher operating costs.

5. **Reduced MPG:** The supercharged engine requires more fuel to generate power, leading to reduced miles per gallon.

**Conclusion:**

The Roush Performance supercharger kit (421389, 2011-2014, 525/540hp 625hp) offers significant performance improvements, with an impressive power gain, quicker acceleration, and enhanced engine response. However, it comes with notable downsides such as a high price tag, complex installation, increased noise, and elevated fuel consumption. Overall, it is an appealing option for those seeking a high-performance upgrade for their Ford vehicle, but it should be carefully considered given the associated costs and complexity.

**Recommendation:**

If you are looking for a high-performance upgrade for your Ford vehicle (2011-2014), and are willing to accept the expenses, the Roush Performance supercharger kit (421389, 525/540hp 625hp) offers an attractive, powerful solution. Prepare yourself for increased power, responsiveness, and driveability, but be ready for the added cost of installation, higher fuel consumption, and the additional noise. If the inherent trade-offs align with your preferences and expectations, this supercharger kit is worth considering.

Details:

Manufacturer: Roush Performance.

specifications reppchargers:

  • for models: 525
  • for years: 2011-2014
  • brand: Roush Performance
  • mpn: 421389
  • type: Supercharger Upgrade Kit
  • performance part: Yes
  • upc: 844764004382

offer reppchargers:

  • sold: 0
  • quantity: 5
  • options: Ship-to-home
  • started: February 4, 2025
  • availability: In Stock

shipping reppchargers:

  • class: Standard
  • cost: $0.00
  • service: Standard
  • transit: 3-8 Days
  • type: Fixed

seller reppchargers:

  • city: USA
  • rating: 99.4%
  • # reviews: 101713

returns reppchargers:

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

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general reppchargers:

  • Air Fuel Delivery > Turbos, Superchargers Intercoolers > Superchargers Parts
  • condition: New
for models: 525, for years: 2011-2014, type: supercharger upgrade kit, performance part: yes,
category: auto parts > air fuel delivery > turbos, superchargers intercoolers > superchargers parts, sku: 1544915343924623,

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