15-20 Ford Mustang Shelby GT350 5.2L Kooks 11543300 3" x 2-3/4" SS GREEN Catted X-Pipe. Retains OEM Mufflers

Upgrade your 2015-2020 Mustang Shelby GT350 with the Kooks 11543300 X-Pipe. This 3" x 2-3/4" stainless steel X-Pipe with GREEN catalytic converters enhances exhaust flow and sound while retaining OEM mufflers, ensuring improved performance and compliance with emissions standards.

Top Features

  • 3" x 2-3/4" stainless steel tubing
  • GREEN catalytic converters for performance and emissions compliance
  • Retains OEM mufflers for balanced sound

Vehicle Fitment

  • Year Range: 2015-2020
  • Make: Ford
  • Model: Mustang Shelby GT350
  • Engine: 5.2L V8
Vendor: Kooks Headers
SKU: KSH11543300
Availability: (Special Order Item)
$ 2,792.62 USD
On-Sale $ 2,792.62 USD
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This product is NOT CARB-APPROVED. We cannot ship this item to CA or any Carb regulated states. To avoid cancellation fee, do not order this if you live in California.
This product has emissions testing pending, contact us to check on status if California resident.
UPC: 842422130992
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Proposition65 Warning: Cancer and Reproductive Harm

15-20 Ford Mustang Shelby GT350 5.2L Kooks 11543300 3" x 2-3/4" SS GREEN Catted X-Pipe. Retains OEM Mufflers

Enhance your 2015-2020 Ford Mustang Shelby GT350 with the Kooks 11543300 3" x 2-3/4" Stainless Steel GREEN Catted X-Pipe. This high-performance X-Pipe improves exhaust flow and sound while retaining the OEM mufflers. Designed to optimize your vehicle’s performance, it features GREEN catalytic converters for emissions compliance and a robust stainless steel construction for lasting durability.

Key Features

  • 3" x 2-3/4" stainless steel tubing for optimal exhaust flow
  • GREEN catalytic converters for enhanced performance and emissions compliance
  • Designed to retain OEM mufflers for a balanced sound

Benefits

  • Increases horsepower and torque by improving exhaust efficiency
  • Delivers a deeper, more aggressive exhaust note
  • Durable stainless steel construction with a warranty for long-term reliability
  • CARB approved to ensure emissions regulations are met

Product Specs

  • Size: 3" x 2-3/4" tubing
  • Color: Stainless steel finish
  • Material: 304 stainless steel
  • Includes GREEN catalytic converters
  • Designed to work with OEM mufflers

Install Difficulty Level Installation is user-friendly and can typically be completed in 2-3 hours. The design allows for a straightforward fitment with no major modifications required.

Vehicle Fitment

  • Year Range: 2015-2020
  • Make: Ford
  • Model: Mustang Shelby GT350
  • Engine: 5.2L V8

CARB Approval Status: This product is not currently CARB exempt and is not available for purchase in California or for use on any vehicle registered with the California Department of Motor Vehicles.

For more information or to report any inaccuracies in this description, contact the MPT Performance experts at (407) 636-7077 or by email.

Shipping Policy

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 orders outside the contiguous US, and the buyer is 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 your order. We use all major carriers, including USPS, FedEx, UPS, and DHL.

Turnaround Times:

  • MPT Tunes have a standard turnaround time of 2-3 business days, beginning once we receive your MPT Tune Form.
  • We do not process orders on weekends or observed holidays, which do not count as business days.
  • Physical items that are in stock at MPT and ordered by 4PM EST will be shipped the same day. Orders placed after 4PM EST will be processed on the following business day.

Special Considerations:

  • Items not stocked at our location will follow the same processing times but may experience lead-time delays and could incur additional charges. Shipping methods may vary for these items based on what was paid and the requested delivery speed. If you need an item by a specific deadline, please contact an MPT Expert.
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MPT Performance Returns and Refund Policy

  • A Return Authorization Number (RA #) is required for all returns. Please contact an MPT Expert to obtain an RA# before sending anything back.
  • MPT tuning charges and license fees are non-refundable. The sale is final once MPT has sent the tune file via email, which applies to both new tune purchases and tune updates.

Returnable Products:

  • Products (other than MPT Tunes) may be returned within 30 days as long as they have not been installed and are in brand new, unused condition with original packaging. Installed products are non-refundable. MPT reserves the right to deny a return if the product shows signs of installation or damage.
  • Vehicle programmers/tuners that have loaded a tune onto a vehicle cannot be returned.

Refund Amounts:

  • Returns postmarked within 15 days of receipt will be refunded the purchase price minus the shipping cost MPT paid.
  • Returns postmarked between 16 and 30 days will be refunded the purchase price minus a 25% restocking fee and the shipping cost.
  • After 30 days, all sales are final.

Non-Refundable Items:

  • Shipping charges and any package insurance are non-refundable. If free shipping was applied to your purchase, the actual shipping cost will be subtracted from your refund.
  • HP Tuners Credits are non-refundable once they’ve been assigned to a device’s serial number, which occurs either during the purchase or upon completing the tune form.
  • Digital products like SCT Tuner Unlocks, HP Tuners Credits, or MPT Tunes cannot be refunded.
  • Decals/Stickers are non-refundable once received by the customer.
Year Make Model Submodel
2015-2020 Ford Mustang Shelby GT350
2015-2020 Ford Mustang Shelby GT350R
2020 Ford Mustang Shelby GT500

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