Monster Exhaust System

Monster Exhaust System3 inch mandrel bent 409 stainless steel system with 78% greater flow area vs stock. Removes factory 2. 25 inch piping, resonators, and restrictive OEM muffler. Gain rear end ground clearance for improved departure angle while reducing weight. Strong authoritative growl without highway drone.

6L Duramax and 1998-2007 5

These boost tubes are designed for serious horsepower

and tougher construction than ever

Extends filter service intervals

enclosed housing and large tubing offers huge improvements over stock flow

with a thicker core for a 21% improvement in volume

Outperforms all competitors with the highest tested increase in intake air density at 4

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Using technology from our patented differential covers

durable enough to withstand a collision with your drunk friend's 9 iron

Log up to 100 parameters at a time including up to 20 min/max values

dense air into cylinders