Accessories & Gear / Power Adders

New Flowmaster dBX Muffler For 2005+ Tacoma 4.0 V6

Tacoma Flowmaster dBX Muffler

Flowmaster introduces an all-new dBX muffler system for the popular Toyota Tacoma V6

Flowmaster is a well-known name in the world of after-market exhaust systems. According to, Flowmaster was founded in 1983 with the then unique idea of using a system of muffler baffles that bounce and cancel sound waves geometrically. Traditionally, mufflers had used fiberglass batting to absorb sound frequencies, and while this technology wasn’t (and isn’t) inferior, the use of baffles is often times less restrictive…or at least that’s the Flowmaster claim.

Truth be told, all big-name muffler brands offer similar performance.

Still, if you’ve got a 2005-2011 Toyota Tacoma with a 4.0L V6, there’s a new muffler on the market.

The new dBX Series cat-back single side exit exhaust system is 409 stainless steel and bolt-on. Like all Flowmaster stainless steel exhaust systems, it’s made in the USA.

The exhaust includes a 2.50″ inlet pipe and a full 3.00″ mandrel-bent tailpipe, which exits behind the right rear tire topped with a fully polished, 3.50″ diameter Flowmaster-embossed stainless tip. This system fits all wheelbase Tacoma’s except the standard cab and X-Runner trucks, and like all Flowmaster stainless steel products, it’s covered by a limited lifetime warranty.

Why Not A Dual Exhaust System?

Some of you may be thinking, why not duals? Won’t a true dual exhaust system sound better and be more powerful? Not necessarily…

  1. Engine designers count on a bit of exhaust system flow resistance (called backpressure) to facilitate combustion. Backpressure helps facilitate cylinder gas scavenging, which helps clear exhaust out of the cylinder in preparation for the next combustion stroke. If you go to a dual system, you could negatively effect backpressure if you’re not careful.
  2. Often times, a V6 will sound unbalanced and high-pitched when the exhaust system doesn’t combine the flow from each side of the block. This is because at any given time one side of the engine is exhausting more waste gases than the other…the net result of this unbalanced sound is a V6 that will sound more like a 4-cylinder than a stout V6.
  3. What’s more, combining the exhaust gases from each side of the block – and then running them through a proper muffler – can give you many of the sound characteristics of a V8.
  4. The factory hangers are for a single-exit exhaust. If you go with a dual setup, you’ll have more work to do during install.

You can check out Flowmaster’s new dBx on and to find the best price.