• Made in USA

    Built here, not imported.

  • Adjustable Sound

    Switch from quiet to loud whenever you want.

  • Rebuildable

    Serviceable design built to last.

  • Financing Available

    Pay over time with Affirm at checkout.

Shop Thunder Muzzle

One Muffler. Two Personalities.

The Thunder Muzzle Gen 2 lets you switch from a normal, quiet ride to full-volume diesel sound whenever you want. Adjustable, rebuildable, and made in the USA — built for truck owners who refuse to choose between comfort and character.

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Common Questions

How long does it take to ship?

Each Thunder Muzzle is built to order in the USA. Current lead time is about 4 weeks. It's worth the wait — and you'll get updates along the way.

How does the adjustable sound work?

The Thunder Muzzle Gen 2 lets you switch between a normal, quiet exhaust note and a loud, straight pipe sound whenever you want. Quiet when you need it, loud when you want it.

Do I need the 4-inch or 5-inch?

Match the muffler to your exhaust pipe diameter. If you're not sure which size fits your truck, reach out — we're happy to help you get it right the first time.

Can I pay over time?

Yes — financing through Affirm is available at checkout, so you can split your purchase into payments.