21-26 Ford F-150 2.7L/3.5L/5.0L Flowmaster 718170 Flow FX Cat-Back Exhaust System

Flowmaster 718170 Flow FX Cat-Back Exhaust System

The Flowmaster 718170 Flow FX Cat-Back Exhaust System is engineered for 2021-2026 Ford F-150 trucks equipped with factory dual rear tailpipes and 2.7L, 3.5L, 5.0L, or PowerBoost 3.5L engines. This performance exhaust upgrade delivers a deep, throaty exhaust tone with an aggressive to moderate sound level while improving exhaust flow and enhancing the overall driving experience. Designed with Flowmaster’s proven Flow FX straight-through muffler technology, this system provides a balanced combination of sound, performance, and durability for truck owners looking to upgrade beyond the factory exhaust system.

The bolt-on cat-back design features 3.00-inch mandrel-bent 409 stainless steel tubing that helps maximize exhaust flow and supports improved performance. The system routes through the factory dual exhaust exit locations, uses factory hanger positions for a straightforward installation, and is finished with large 4.50-inch black ceramic-coated stainless steel exhaust tips for a bold custom appearance. The Flowmaster 718170 exhaust system can provide gains of up to 18 horsepower and 20 lb-ft of torque at the rear wheels when compared to the factory exhaust system.

Key Features

• Flowmaster Flow FX straight-through muffler design for improved exhaust flow and performance sound.
• Aggressive to moderate exhaust tone that delivers a noticeable performance upgrade without excessive volume.
• 3.00-inch mandrel-bent 409 stainless steel tubing for enhanced durability and efficient airflow.
• Large dual rear exit tailpipes designed to fit factory dual exhaust bumper openings.
• Pair of 4.50-inch black ceramic-coated stainless steel exhaust tips with an aggressive appearance.
• Uses factory hanger locations for a clean, secure installation.
• Designed specifically for Ford F-150 models with factory dual tailpipes.
• Does not fit Ford F-150 models equipped with OEM active exhaust systems or single side exit exhaust configurations.

Benefits

• Enhances the truck’s exhaust sound with a performance-inspired Flowmaster tone.
• Improves exhaust system appearance with premium black ceramic-coated tips.
• Provides increased exhaust flow potential for performance-focused F-150 builds.
• Offers durable corrosion resistance with stainless steel construction.
• Maintains a factory-style fitment while delivering an upgraded aftermarket appearance.
• Includes necessary installation hardware for a simplified bolt-on upgrade.
• Backed by Flowmaster’s Lifetime Limited Warranty for long-term confidence.

Product Specifications

• Brand: Flowmaster
• Part Number: 718170
• Product Type: Cat-Back Exhaust System
• Exhaust Series: Flow FX
• Vehicle Category: Performance Exhaust
• Main Pipe Diameter: 3.00 inches
• Pipe Material: 409 Stainless Steel
• Muffler Material: 409 Stainless Steel
• Muffler Style: Flow FX Absorption Muffler
• Muffler Dimensions: 14.00-inch length x 9.00-inch width x 4.00-inch height
• Muffler Color: Silver with natural finish
• Tailpipe Quantity: Dual
• Tailpipe Outlet Diameter: 3.00 inches
• Exhaust Tip Quantity: 2
• Exhaust Tip Diameter: 4.50 inches
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Finish: Black Ceramic Coating
• Exhaust Tip Style: Round with rolled edge and embossed logo
• Exit Style: Dual rear exit
• Clamp Type: Flat Band Clamps
• Mounting Type: Factory hanger locations
• Catalytic Converter Included: No
• Valve Included: No
• Sound Level: Aggressive / Moderate
• Emission Code: 5
• California Proposition 65 Warning: Contains chemicals including chromium (hexavalent compounds) and nickel (metallic).

Install Difficulty Level

This Flowmaster 718170 Cat-Back Exhaust System is designed for an easy installation using factory mounting locations and included hardware. With basic mechanical tools and proper vehicle support, installation can be completed as a straightforward bolt-on upgrade. The shortest installation time found for comparable Flowmaster cat-back installations is approximately 1 hour, making this system a convenient option for experienced DIY installers or professional exhaust shops.

Vehicle Fitment

• 2021-2026 Ford F-150 with 2.7L EcoBoost engine and factory dual tailpipes.
• 2021-2026 Ford F-150 with 3.5L EcoBoost engine and factory dual tailpipes.
• 2021-2026 Ford F-150 with 5.0L V8 engine and factory dual tailpipes.
• 2021-2026 Ford F-150 PowerBoost Hybrid with 3.5L engine and factory dual tailpipes.
• Only fits models originally equipped with optional dual exhaust exiting through the rear bumper. Does not fit models originally produced with single side exit exhaust.

For questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.