On one hand, these diesel stacks are widely considered as a trucker’s best friend. On the other hand, though, it’s an environmentalist’s worst nightmare.

Not content with eight-inch diesel stacks, which are already pretty huge as far as diesel stacks are concerned, Pypes Performance Exhaust decided that eight inches aren’t big enough stacks anymore so they did what any motivated exhaust company would do: raise the ante.

And this is what happens when Pypes Performance Exhaust plays the role of mad scientists. Behold the twelve-inch diesel stacks.

Watching this video, you can immediately conjure up what people are thinking as soon as they see it. On one end, you have those truck drivers salivating at the thought of having one – or two – of these exhausts installed in their semi. On the other end, you have those environmentalists that must have already fainted after seeing that black plume of smoke released by 12-inch stacks.

The question is: which side of the fence are you on?

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