Roush Performance 422114 | ROUSH Mustang 5.0L GT Performance Pac - Level 2; 2018-2019

  • Ford Mustang Roush Performance Performance Package
  • Ford Mustang Roush Performance Performance Package
  • Roush Performance 422114 | ROUSH Mustang 5.0L GT Performance Pac - Level 2; 2018-2019
    Roush Performance 422114 | ROUSH Mustang 5.0L GT Performance Pac - Level 2; 2018-2019 Alternate Image 1

    ROUSH Mustang 5.0L GT Performance Pac - Level 2; 2018-2019

    • Catalog #: 001051627
    • Model #: 422114
    • $1,399.99

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Product Description

Roush Performance 422114 - ROUSH Mustang 5.0L GT Performance Pac - Level 2; 2018-2019.

Take your Mustang?s performance from mild to wild with the new ROUSH Level 2 Performance Pac. Increase performance by 24 rear-wheel HP and 18 ft-lb rear-wheel torque with a few simple upgrades. Countless hours of engineering and testing went into designing the ROUSH Calibration, Cold Air Intake Kit, and ROUSH Axle-Back Exhaust System in this Performance Pac for a thrilling driving experience.

The Cold Air Intake Kit has been redesigned and engineered specifically for the 2018-2019 Mustang 5.0L V8. Replace your restrictive factory air intake system with our Cold Air Intake Kit for improved throttle response and a sportier driving experience. Our new specially designed see-through lens on top of the air box displays the air filter as if it were an open airbox. The enclosed airbox creates more horsepower by keeping inlet air temperatures down.

Our Axle-Back Exhaust System has that signature race-inspired rumble you crave. The 2018-2019 ROUSH Performance Axle-Back Exhaust System is constructed of corrosion-resistant T-304 stainless steel, and is mandrel-bent for high-performing airflow. Thanks to hours of research and development, testing, and validation, this system improves flow and reduces back pressure.

The Performance Pac kit includes the air filter with clamp, injection-molded lower airbox/tray with installed foam hood seal, clean air tube, and all required mounting hardware. The kit utilizes all factory emissions and vacuum lines. Factory mounting locations and hardware are utilized to allow for quick and easy installation.

Mustang 5.0L V8 ROUSH Performance Pac - Level 2:

  • Fits the 2018-2019 Mustang 5.0L V8 engine
  • Increases engine performance throughout the power curve
  • Adds 24 RWHP and 18 ft-lb RWTQ over stock
  • PCM calibration is optimized for 91-octane fuel (compatible with lower octane levels with a potential decrease in performance)
  • Calibration is flashed using free ROUSH RDT software using industry standard J2534 interface tools (Note: a dealer service charge may apply)
  • Experience a sportier driving experience with more aggressive throttle mapping
  • Improved throttle response
  • Reduces air flow restriction
  • Aggressive race-inspired sound, looks, and performance
  • Axle-back exhaust improves flow and reduces back pressure with mandrel-bent tubing
  • 3 year/36,000 mile limited powertrain warranty
  • 50 State Legal for 2018-2019 Model Years: EO #D-418-32

What's included:

  • ROUSH PCM (Powertrain Control Module) Calibration
  • ROUSH Cold Air Intake Kit
  • Premium ROUSH Axle-Back Exhaust System


California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit

California Residents: TIRE WARNING: LMPerformance will not ship Tires to California.

Legal: Some or all of these parts may not comply with Federal, State, Province, and/or Local laws, ordinances, and regulations. Buyer takes all responsibility to ensure that any modifications or upgrades that have done conform to all applicable laws and regulations for road use, especially pertaining to safety and emissions. LMPerformance is not responsible for buyer not complying with Federal, State, Province, and/or Local laws, ordinances, and regulations. This policy shall be in force for all past, current, and future purchases from LMPerformance, Inc. LMPerformance will not ship ANY non-CARB compliant products to California where California requires products to be CARB certified such as Catalytic Converters and Induction Kits.

FREE SHIPPING: Please note FREE Shipping refers to shipping within the contiguous continental US only. All other locations extra.

IMAGES: Images may be a representation and may not reflect the actual product. Examples would be SPEC stage 3 clutch kits which all use the same photo.

Search Terms

Search Terms: 422114 RSH422114 Roush Performance ROUSH Mustang 5.0L GT Performance Pac - Level 2 Ford Exhaust Performance Packages ROUSH Mustang 50L GT Performance Pac - Level 2 2018 2019

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About Roush Performance

History and information about Roush Performance and their products.

If you are the proud owner of a Ford Vehicle, whether it be the iconic Ford Mustang, the Built Ford Tough F-150, Ford Super Duty or Ford Focus then chances are you are familiar with the name ROUSH PERFORMANCE, the company founded by motorsports legend Jack Roush.. Whether your knowledge stems from weekend racing or from your knowledge of industry accomplishments in the high performance aftermarket field that knowledge is sure to be positive. Expertise and dedication to the highest of standards.are trademarks of ROUSH thus affording them an inimitable reputation for providing exceptional performance products for your Ford vehicle.

This Michigan company has been in the business of transforming factory-born Ford Mustangs since 1995 on a limited-run basis and has made several numbered, limited-edition models. The ROUSH reputation relative to high performance Mustang powertrain parts is inimitable and you can feel confident that if you are in a quest for aftermarket Mustang parts like superchargers, cold air intakes and exhaust kits you will have a winner with ROUSH. Most importantly they are a company you can trust because the team at ROUSH understands your car’s unique system and consequently can provide you with ROUSH Performance parts that are of primo standards and are known for their ability to outlast many others.