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Home / Exhaust / Muffler / Flowmaster 21-25 F-150 Outlaw Direct Fit Muffler
Flowmaster 21-25 F-150 Outlaw Direct Fit Muffler
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Flowmaster

Flowmaster 21-25 F-150 Outlaw Direct Fit Muffler

PART 818171CATEGORY Muffler
$478.95
MSRP $538.95You save $60.00
$478.95
1
LISTED BY THE MANUFACTURER FOR

“Flowmaster 21-25 F-150 Outlaw Direct Fit Muffler”

“This Flowmaster® Outlaw Direct-Fit Muffler system for the 2021-2026 Ford F-150 trucks with the 2.7, 3.5 or 5.0-liter engines is manufactured using durable 409...”

Confirm fitment with the part number before ordering.

Product information

Manufacturer information. Check the part number and installation requirements for your vehicle.

Supplier details checked 2026-09-23 · Test catalog

Some supplier details are unavailable for this product.

Product description

Fits 2021-2026 Ford F-150 with 2.7, 3.5 and 5.0-liter non-PowerBoost engines with factory dual tailpipes

Flowmaster Outlaw Direct Fit Muffler

Features

Powerful exhaust note with an aggressive sound level that’s a perfect balance of sound and power

Connects directly to the factory dual tailpipes for a simple installation

Flowmaster Outlaw series muffler offers race proven performance

Large 3.0-inch Mandrel bent pipes for superior flow and power

Max power gains of 16 hp and 21 lb-ft at the rear wheels

409 stainless steel constuction for extra durability

Lifetime limited Warranty

Manufacturer notes

This system replaces ONLY the Factory muffler and over axle pipes and reuses the factory dual tail pipes and tips. Does not fit PowerBoost hybrid models. Does not fit models with OEM active exhaust option.

Supplier category
Exhaust, Mufflers & Tips
Supplier subcategory
Muffler
UPC / barcode
090127846599
Units per product
1
Supplier Proposition 65 status
Y
Supplier EPA status
N/A
Air freight prohibited
No
Not CARB approved
No
CARB acknowledgement required
No
Freight delivery required
No
Powersports product
No

Manuals and documents

More manufacturer information

Other product descriptions

Flowmaster 21-25 F-150 Outlaw Direct Fit Muffler

2125 F150 DIRECT FIT MUFFLER OTL

MUFF 21-26 F-150 DF

About the manufacturer

This Flowmaster® Outlaw Direct-Fit Muffler system for the 2021-2026 Ford F-150 trucks with the 2.7, 3.5 or 5.0-liter engines is manufactured using durable 409 stainless steel throughout and features 3.00-inch mandrel bent pipes for optimum exhaust gas flow. A Flowmaster Outlaw Series muffler is used for an aggressive sound level and maximum performance. Performance increases on the dyno revealed an increase of 16 hp and 21 ft/lbs. at the rear wheels. This system connects directly to the factory dual tail pipes and uses all the existing factory hangers. Includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.

Additional manufacturer information

MUFF DF ASMB

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