Upgrade your Ford F-150 with the Flowmaster Flow FX Cat-Back Exhaust System, engineered for performance, durability, and a bold exhaust presence. Designed for 2021–2025 F-150 models equipped with the 2.7L, 3.5L, or 5.0L engine, this system delivers an aggressive to moderate sound while improving overall power output.

This cat-back system features a Flow FX straight-through performance muffler that maximizes exhaust flow for increased horsepower and torque. Constructed from 3.00-inch to dual 2.50-inch mandrel-bent 409 stainless steel tubing, it provides long-lasting corrosion resistance and high exhaust efficiency. Dyno testing shows gains of up to 9 horsepower and 10 lb-ft of torque at the rear wheels.

Dual 4.00-inch black ceramic-coated stainless-steel tips give your F-150 an upgraded custom look, while factory hanger locations ensure a precise, hassle-free installation. The system includes all necessary hardware and is backed by Flowmaster’s Lifetime Limited Warranty.

Key Features

• Aggressive to moderate exhaust tone
• Flow FX series straight-through muffler for improved airflow and performance
• Dyno-proven gains of 9 hp and 10 lb-ft at the wheels
• 3.00" inlet transitioning to dual 2.50" stainless steel mandrel-bent tubing
• 409 stainless steel construction for durability and corrosion resistance
• Dual 4.00" black ceramic-coated tips for a bold, custom appearance
• Uses factory hangers for a simplified installation process
• Includes all necessary hardware
• Lifetime Limited Warranty

Specifications

• Weight: 40.35 lbs
• Length: 40.3 in
• Width: 21.3 in
• Height: 11.7 in
• Brand: Flowmaster
• California Proposition 65: Yes
• Chemical Name: Chromium (hexavalent compounds)
• CARB Compliant: Yes
• Catalytic Converter Included: No
• Category: Exhaust
• Clamping Type: Flat Band
• Clamps Included: Yes
• Emission Code: 5
• Exhaust Series: FlowFX
• Exhaust Tip Color: Black
• Exhaust Tip Connection: Welded
• Exhaust Tip Cut: Angled
• Exhaust Tip Diameter: 4.00 in
• Exhaust Tip Edge: Angle Cut
• Exhaust Tip Finish: Black Ceramic Coating
• Exhaust Tip Intercooled: No
• Exhaust Tip Length: 5.25 in
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Quantity: 2
• Exhaust Tip Resonated: No
• Exhaust Tip Shape: Round
• Exhaust Tip Wall: Double Wall
• Exit Style: Dual Out Same Side
• Finish: Natural
• Gasket or Seal Included: No
• Grade Type: Performance
• Hangers Included: Yes
• Inlet Diameter: 3.00 in
• Inlet Type: Flanged
• Main Piping Diameter: 2.50 in
• Mount Type: Uses New Hangers (Included)
• Mounting Bracket Included: Yes
• Muffler Body Height: 4.00 in
• Muffler Body Length: 14.00 in
• Muffler Body Material: 409 Stainless Steel
• Muffler Body Shape: Oval
• Muffler Body Width: 9.00 in
• Muffler Color: Silver
• Muffler Finish: Natural
• Muffler Included: Yes
• Muffler Inlet Connection: Slip-Fit
• Muffler Inlet Inside Diameter: 3.00 in
• Muffler Inlet Location: Center
• Muffler Inlet Outside Diameter: 3.13 in
• Muffler Outlet Connection: Slip-Fit
• Muffler Outlet Diameter: 2.50 in
• Muffler Outlet Quantity: 2
• Muffler Overall Length: 20.00 in
• Muffler Quantity: 1
• Muffler Series: FlowFX
• Muffler Type: Absorption
• Part Type: Exhaust System
• Pipe Color: Silver
• Pipe Material: 409 Stainless Steel
• Product Type: Exhaust System
• Sound Level: Aggressive / Moderate
• Spring Bolt Kit Included: No
• Sub Category: Exhaust and Tail Pipes
• Tail Pipe Outlet Outside Diameter: 2.50 in
• Tail Pipe Quantity: 2
• Tail Pipe Tapered Outlet: No
• Tip Logo: Embossed
• Type: Cat-Back
• Valve Included: No
• Valve Type: Not Applicable

Fitment 

Fits 2021–2025 Ford F-150
Engine Compatibility:
• 2.7L EcoBoost
• 3.5L EcoBoost
• 5.0L V8

Cab/Bed Compatibility:
• Compatible with multiple cab and bed configurations (based on factory exhaust routing)

Drivetrain:
• 2WD
• 4WD

Exit Style:
• Dual out same side