




The MBRP Armor Pro 3-Inch Cat-Back Exhaust (S5277304) upgrades the 2021–2026 Ford F-150 with improved exhaust flow, a refined Street Profile sound, and premium durability. Built from mirror-polished T304 stainless steel, this single side exit system enhances performance, style, and longevity while delivering a deeper, more aggressive tone backed by a Lifetime Warranty.
Top Features
3-inch high-flow cat-back exhaust system
Premium ARMOR Pro Series construction
T304 stainless steel for maximum corrosion resistance
Street Profile tone – deeper and refined performance sound
Mandrel-bent tubing for improved exhaust flow
Single side exit configuration
4.5-inch dual wall, angle-cut polished exhaust tips
Direct bolt-on installation
Lifetime Warranty
Vehicle Fitment
2021 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2022 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2023 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2024 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2025 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2026 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
Fitment Note: Excludes PowerBoost, Tremor, and Raptor models.
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.
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Enhance the performance, sound, and style of the 2021–2026 Ford F-150 with the MBRP Armor Pro 3-Inch Cat-Back Exhaust System (Part #S5277304). Designed for truck owners who demand premium quality and aggressive performance, this system is constructed from mirror-polished T304 stainless steel for exceptional corrosion resistance and long-term durability. The 3-inch mandrel-bent tubing improves exhaust flow for increased power and throttle response while delivering a refined Street Profile exhaust tone that is deeper and more aggressive than stock without being overwhelming during daily driving. Finished with dual wall, angle-cut polished tips and a clean single side exit configuration, this system delivers a high-performance look that complements the modern F-150 while maintaining an OEM-style exit location. Backed by a Lifetime Warranty, the Armor Pro series is engineered for enthusiasts seeking premium performance, reliability, and sound from one of the most respected names in performance exhaust systems.
Key Features
3-inch high-flow cat-back exhaust system
Premium ARMOR Pro Series construction
Street Profile sound – deeper and more aggressive than stock
High-quality T304 stainless steel for maximum corrosion resistance
Smooth mandrel-bent tubing for optimal exhaust flow
Single side exit configuration behind the passenger rear tire
Dual wall, mirror-polished angle-cut exhaust tips
Bolt-on installation with factory mounting points
Engineered for performance gains and improved exhaust tone
Backed by MBRP Lifetime Warranty
Benefits
Improves exhaust flow for enhanced horsepower and torque potential
Produces a refined, sporty exhaust tone ideal for daily driving
Premium T304 stainless steel construction resists rust and harsh environments
Polished dual-wall tips deliver a high-end performance appearance
Increased exhaust flow can improve throttle response and driving excitement
Direct bolt-on design reduces installation time and complexity
Designed for long-term durability with a Lifetime Warranty for added confidence
Product Specs
Part Number: S5277304
Exhaust Type: Cat-Back Exhaust System
Series: Armor Pro
Sound Profile: Street Profile
Tubing Diameter: 3-inch
Material: T304 Stainless Steel
Finish: Polished Stainless Steel
Exit Style: Single Side Exit with Dual Tips
Tip Style: Dual Wall, Angle Cut
Tip Outlet Size: 4.5-inch
Fuel Type: Gasoline
Warranty: Lifetime Warranty
Vehicle Configuration: 2.7L EcoBoost, 3.5L EcoBoost, and 5.0L engines only
Exclusions: PowerBoost, Tremor, and Raptor models
Install Difficulty Level
Installation is straightforward thanks to the direct bolt-on design that utilizes factory mounting locations and clamps. No welding is required, making this a simple upgrade for most enthusiasts with basic hand tools. Many installations can typically be completed in about 1–2 hours, allowing truck owners to quickly upgrade performance and sound without extensive mechanical experience.
Vehicle Fitment
2021 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2022 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2023 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2024 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2025 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
2026 Ford F-150 – 2.7L EcoBoost, 3.5L EcoBoost, 5.0L
Fitment Notes:
Excludes PowerBoost Hybrid, Tremor, and Raptor models.
If you have any questions about this product or would like to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email for assistance.
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 |
|---|---|---|---|
| 2021-2025 | Ford | F-150 | King Ranch |
| 2021-2025 | Ford | F-150 | Lariat |
| 2021-2023 | Ford | F-150 | Limited |
| 2021-2025 | Ford | F-150 | Platinum |
| 2021-2025 | Ford | F-150 | Police Responder |
| 2021-2025 | Ford | F-150 | SSV |
| 2024-2025 | Ford | F-150 | STX |
| 2021-2025 | Ford | F-150 | XL |
| 2021-2025 | Ford | F-150 | XLT |
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This is my second vehicle and tune with MPT and this one went great as well. Definitely worth the money for the results you get!
Had been researching for months on the most recommended tune that that could take advantage of the performance upgrades I had made for my F-150 and I’m truly impressed and pleased with choosing MPT Tunes: PRX-87 tune. Outstanding performance, practically night and day difference even just for normal day to day driving but it truly makes your truck come alive.
Didn’t know to much about Tunes, heard a lot about them. So I purchased one. Unbelievable performance.
Made my truck a whole new animal. Thank you
Decals are great quality, easy to peal, easy to apply, and looks awesome.