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Gibson Performance Exhaust - Cat Back Super Truck Exhaust (9521)

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This part fits

  1. 2004 Ford F-150 FX4 5.4L V8 cid:330 Standard Cab Pickup 78.0 in. bed
  2. 2004 Ford F-150 STX 4.6L V8 cid:281 Standard Cab Pickup 78.0 in. bed
  3. 2004 Ford F-150 STX 4.6L V8 cid:281 Standard Cab Pickup 78.0 in. bed
  4. 2004 Ford F-150 XL 4.6L V8 cid:281 Standard Cab Pickup 78.0 in. bed
  5. 2004 Ford F-150 XL 4.6L V8 cid:281 Standard Cab Pickup 78.0 in. bed
  6. 2004 Ford F-150 XL 5.4L V8 cid:330 Standard Cab Pickup 78.0 in. bed
  7. 2004 Ford F-150 XLT 4.6L V8 cid:281 Standard Cab Pickup 78.0 in. bed
  8. 2004 Ford F-150 XLT 4.6L V8 cid:281 Standard Cab Pickup 78.0 in. bed
  9. 2004 Ford F-150 XLT 5.4L V8 cid:330 Standard Cab Pickup 78.0 in. bed
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About this product

Part #: 9521

Your truck deserves a super serious Performance Exhaust System. Gibson Super Truck Exhaust System offers a loud deep powerful sound with dual tailpipes that exit in front of the rear tires with Stainless Tip. You can expect a race rumble tone with improved acceleration and increased horsepower gains. Typical dyno tested horsepower gains average 10-15 and 15-20lb-ft of increased torque. Hassle free, bolt-on installation. No welding required. Backed by a Lifetime Limited Warranty. Not recommended for towing. Noise level may exceed 95-decibel standard.

More Details

Exhaust TypeDual
Exit PositionSide
Exit StyleStraight
Inlet Inside Diameter (in.)3
MaterialAluminized Steel
Muffler Body Length (in.)19.000
Muffler TypeChambered
Outlet Outside Diameter (in.)2.5
System TypeCat Back
Tip LogoNone
Tip Size6 in.
Tubing Diameter2.50 in.
Additional Documents
  1. Technical Bulletinjpg
  2. Certificate of Originpdf
  3. Installation Instructionspdf
  4. Warrantypdf
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

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