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2011 GM 6.6L Duramax Banks Monster Exhaust

2011 GM 6.6L Duramax Banks Monster Exhaust



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4" heavy-duty stainless DPF-back Monster Exhaust system with constant-diameter intermediate pipe and tailpipe. Exclusive CoolCuff® design lowers tailpipe temperatures as much or more than stock while simultaneously improving flow and cutting backpressure.

The CoolCuff design is tested and refined by Banks engineers using Computational Fluid Dynamics software, then validated through extensive temperature testing in all areas: before and after the DPF, 6" out from the tip, by the spare tire, shocks, wiring, hoses, and more. First we tested our own exhaust then we tested the others. Result: Monster Exhaust measured well over a hundred degrees cooler than the competition, and cooler than stock, too!

The system includes a huge 6X5" polished-stainless rolled-edge tailpipe tip, and comes with a 5-Year Limited Warranty.


This product may defeat emissions systems via electronic or mechanical means and is STRICTLY  for off-road use only. According to the EPA Clean Air Act, it is illegal for use on any Federal, State, or Local public highways and illegal use is punishable by the penalties enacted by the mentioned laws. We do not condone illegal use of these products, and a Liability waiver must be filled out, signed, & returned before this item will ship. Click here for Online Liability Waiver or here for Fax/Email Liability Waiver. We do NOT accept returns on ANY emissions defeating electronics or equipment. NO EXCEPTIONS! This item CANNOT be shipped to California.

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