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  1. SLP 99-04 4.6L SOHC/DOHC PowerFlo-X Crossover Pipe (With Cats)

    SLP 99-04 4.6L SOHC/DOHC PowerFlo-X Crossover Pipe (With Cats)

    The perfect complement to our "Loud Mouth" cat-back systems, these X-pipes use free-flowing mandrel-bent tubing and a genuine X crossover to provide a significant horsepower increase over the restrictive stock cat pipes. They're available with or without high-flow catalytic converters and feature our exclusive three-piece design for unparalleled versatility and ease of installation.

    NOTE: Includes detailed instructions and all required installation hardware. Photo may not show all included parts. Not legal for use on pollution-controlled motor vehicles. 2004 SOHC and DOHC applications require O2 Extension Harness (# M31037).


  2. Exclusive three-piece modular design makes it possible to upgrade to SLP Long-Tube Headers without purchasing a new X-pipe
  3. Includes band clamps for easy interchangeability of cats and race pipes
  4. Equipped with a true X-pipe crossover, not a poor-flowing clamshell imitation
  5. Constructed entirely from mandrel-bent stainless steel
  6. Equipped with factory O2 bungs (where applicable)
  7. Fits 1999-2004 SOHC and 2001-2004 DOHC models
  8. Learn More

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