98-02 LS1 SLP “Loudmouth II” Bullet Muffler


Model Number: 31067

Get maximum flexibility from your modular SLP cat-back system with our new “Loud Mouth II” bullet race muffler. It offers flow and performance similar to that of our original Loud Mouth? resonator but features a ceramic-wrapped, perforated core that reduces high-frequency noise and in-car resonance. Each Loud Mouth II muffler is constructed from hand-polished 304 stainless steel and embossed with the classic SLP logo.


3″ ID/OD

4″ body diameter

18-1/4″ overall length

Weight 1 oz

2 reviews for 98-02 LS1 SLP “Loudmouth II” Bullet Muffler

  1. Rated 5 out of 5
    ( 2 reviews )

    Charles Creech (verified owner)

    great sound over stock muffler. was music to my ears!

  2. Rated 5 out of 5
    ( 2 reviews )

    Al Conte

    I decided to upgrade the exhaust system slightly on my WS6.
    After reviewing the work involved, I simply cut out the old muffler system, keeping my dual quad tips.
    I welded in the SLP II with a splitter coming out into both exhaust tips.
    I gained clearance, got rid of some weight, and the car now sounds like a WS6 should.
    And that’s a quote from the muffler shop guy up the road.
    I stopped for gas and he came out and asked what kind of system I had.
    He sells magnaflow stuff.
    He commented that the sound of my SLP is how a Trans Am should sound.
    Then he asked where I got it. LOL

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SKU: 31067 Category: