Your Cart Is Empty
Showing 1 - 7 of of 12

Banks Monster Exhaust System - 48939

Single Exhaust System
  • $431.57
  • $388.41
  • Free Shipping
  • Ships Between 9/25 - 9/27
  • What Do You Drive?


  • Style:
    4" Single side exit, with 5" round polished tip
  • Part #:

Have a Question?
Have a Question? Ask a product expert! (800) 874-8888 Live Chat

We’re sorry. The information you have requested is temporarily unavailable.

Banks Monster Exhaust System Part #48939 Customer Reviews

Average Rating

3 Customer Reviews

Monster exhast 2006 6.6 L Duramax

Reviewed by Kevin D (Weldon, CA) Reviewed for a 2006 Chevy Silverado — Aug 30, 2010 10:08 AM

Was this review helpful?
Yes   No
7 of 9 people found the following review helpful.

Looks great, sounds quiet like I wanted and Lifetime Warrantee, I'm set.

Banks Monster Exhaust on my 2006 Duramax

Reviewed by George D (Albuquerque, NM) Reviewed for a 2011 GMC Yukon XL — Aug 22, 2009 8:46 AM

Was this review helpful?
Yes   No
4 of 4 people found the following review helpful.

While I've installed exhaust systems before, I elected to have a shop install this system. (lack of time) The system went on easily (I watched) with no problems. The fit was perfect. Combined with the Banks Ram Air Intake System which I installed myself the same weekend I've noticed a quicker turbo spool up and a 100-200 degree drop in EGT while pulling a 6000 lb. trailer in the mountains. All good. I don't have enough miles on it to accurately determine MPG benefits yet but it seems a bit better. Time will tell as I accumulate more miles on the system.

over priced

Reviewed by Edward S (Manvel, TX) Reviewed for a 2006 GMC Sierra — May 12, 2009 4:51 AM

Was this review helpful?
Yes   No
4 of 6 people found the following review helpful.

The system is good quality, but over priced for bent tubing. What disappoints me the most is no noticable improvement in fuel economy, certainly not the 1-1/2 to 2 mpg that the sales tech suggested. I do like the looks of the polished 4 inch tip but hardly worth $500...