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Gale Banks Engineering GMC Sierra 4" Cat-Back Monster Series Single Exit Exhaust System - Diesel Engines

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$424.95 and up
$468.08 - $830.18
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Looking to hear the roar of your GMC Sierra? Gale Banks Engineering GMC Sierra Monster Exhaust System offers up to a 176% improvement in airflow and slashes backpressure up to 98%. With its constant-diameter to maximize flow and lower exhaust temperatures, the monster exhaust pipes bolt behind the turbine outlet pipe. The streamlined head pipe assembly, intermediate pipes, and tailpipe are formed of stainless, heavy-wall tubing for rugged durability.

The polished stainless monster muffler features a straight-through 4" diameter flow-path with an exclusive expansion chamber to dissipate the annoying mid-range exhaust drone that accompanies most straight-through mufflers. The monster muffler utilizes spun ceramic, very-high-temperature packing, more than triples stock flow, and delivers an authoritative exhaust sound with a 5" polished stainless steel tailpipe tip sports a rolled edge. Double-walled design with 1/2" air gap keeps heat from tarnishing exterior mirror finish with an adjustable clamp for positioning on tailpipe. This Gale Banks Engineering GMC Sierra Monster Exhaust System is backed by a Gale Banks Engineering lifetime warranty.
  • 176% Improvement in airflow
  • Slashes backpressure up to 98%
  • Stainless steel tailpipe tip 
  • Muffler features a straight-through 4" diameter flow-path
  • Delivers authoritative exhaust sound
  • Lifetime warranty
Open up the performance of your GMC Sierra with a Gale Banks Engineering exhaust system. You won't be disappointed with the quality of this system. This system will not only give your truck the quality sound you have been looking for, but a higher increase of the power of your Sierra. So make the right decision for your diesel and choose Gale Banks Engineering.
Gale Banks Accessories and Parts
2 reviews
Oliver O
Lake Zurich, IL
Banks Monster Exhaust
Excellent system. You can feel the extra torque and improved acceleration. Coupled with an AirAid filter system I am seeing 10%-20% improvement in gas mileage as well. The system installs very easily and everything fit perfectly. It took more time to take the original exhaust system off than to install the new one. Great exhaust tone. A little more aggressive than I was expecting based on the description/reviews. My V-10 now sounds like a Ferrari on steroids!
Brian L
Jackson, MI
Vortec Max With Banks Monster
Excellent idle and hard acceleration note. There are a couple of partial throttle positions where conversation in the cab gets difficult. Bothers my wife a lot more than me!
Manufacturer Part Number(s):
48628, 48629, 48630, 48632, 48633, 48634, 48937, 48938