Upgrade your 2011-2014 Ford Mustang GT 5.0L with the Kooks 1141H250 Header and Catted H-Pipe Kit. Featuring high-flow Kooks GREEN Cats, this stainless steel kit boosts horsepower and torque, improves exhaust tone, and ensures EPA compliance, making it the ultimate performance upgrade for your Mustang.
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.
Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
The Kooks 1141H250 Header and Catted (H) Connection Kit for the 2011-2014 Ford Mustang GT 5.0L is a top-tier performance upgrade, featuring Kooks GREEN Cats, engineered to handle up to 750 RWHP for modern muscle cars. This kit offers exceptional exhaust flow with 1-3/4" headers and includes high-quality, EPA-verified catalytic converters. Designed for enthusiasts who demand both performance and compliance with emissions standards, the 304 stainless steel construction ensures durability, corrosion resistance, and long-lasting performance.
The H-pipe design provides an aggressive exhaust tone while improving throttle response and overall engine power. With this Kooks kit, the Mustang GT will experience gains in both horsepower and torque, making it a perfect choice for those seeking a significant boost in performance. The Kooks GREEN Cats ensure that this upgrade meets strict environmental standards, while still providing maximum exhaust flow for optimal performance.
The Kooks 1141H250 Header and Catted (H) Connection Kit is classified as a moderate installation task. With basic mechanical knowledge and the right tools, installation can typically be completed in 3-4 hours. For best results, professional installation is recommended. The direct-fit design simplifies the process, ensuring compatibility with your Mustang GT.
For any questions or to report inaccuracies in the product description, contact the MPT Performance experts at (407) 636-7077 or by email.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
Year | Make | Model | Submodel |
---|---|---|---|
2012-2013 | Ford | Mustang | Boss 302 |
2011-2014 | Ford | Mustang | GT |
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