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Banks Power Monster Exhaust - 51312


  • Banks Power | Part Number: GBE51312
  • Exit Location/Type:Single Rear
  • Material:Stainless Steel
  • System Type:Cat-Back
  • Tip Included:Tip is included
  • Tubing Size:2.5 Inches
  • Fitment:Direct Fit


Banks' Heavy-Duty Stainless Steel Monster Exhaust system cuts back pressure up to 98% and flows up to 176% better than stock. The streamlined intermediate pipe and tailpipe are formed of stainless, heavy-wall tubing with constant-diameter bends to maximize airflow and lower exhaust gas temps.


Sounds Great !!!

this system fit great sounds awesome I have found an increase in power and fuel economy !!!

from johnstown ny |
I would recommend this product

Installed system myself, directions were straight forward. Must be careful when removing old system as not to cut the cat pipe. The quality of muffler and pipes were top notch.

from Highland,MI |


Question & Answers

3 Answered questions

I am interested in the torque tube headers as well as this monster kit. However It seems there is no down pipe or cat. Am I missing something? It seems the price also reflects this but i dont want to piece together parts from different manufacturers praying they match up smoothly.

Asked by rebel jeeper from Marion Wisconsin on

Hello rebel jeeper, The Banks Power Monster Exhaust will use the factory headpipe and cat. As long as you are using a direct fit catalytic converter everything will match up fine. Thanks for the inquiry.

Answered by Adam from Marion Wisconsin on

What tube size is the inlet side of the muffler? Will it work with the 2.25 in. stock catalytic converter or with a new converter with a tube size of 2.5 in.?

Asked by Mike from Charles Town, WV. on

Mike, the Banks Power Monster Exhaust has an ID of 2.5, so it would work with a new converter with a tubing of 2.5". I hope this helps!

Answered by Sara H. Ext 874 from Charles Town, WV. on

Does this kit have a converter down to a factory/aftermarket cat 2.25 dia. tube?

Asked by MG from Ohio on

MG, the Banks Power Monster Exhaust is a complete kit and comes with everything you need to install it. If you have any questions please give me a call at extension 939. Thanks a lot!

Answered by Zach O. from Ohio on


Headquartered in Azusa, California, Banks Power was a byproduct of Banks Engineering, established over 50 years ago. Its decorated history of breakthrough innovations in gas and diesel engine advancements includes drivetrain and turbocharging and high performance products for gas and diesel systems. Among its Jeep products are sidewinder turbos, exhaust manifolds, tuners and programmers and cold air intakes. Whether you're turbocharging, trying to boost exhaust flow and reduce backpressure or optimizing engine efficiency, Banks Power's impressive lineup of parts and accessories are durable enough to weather the stress and perform under extreme duress. Shop Banks Power Now

This Product Fits the Following:

  • 1999 Jeep Wrangler (TJ) SE  
  • 1999 Jeep Wrangler (TJ) Sahara  
  • 1999 Jeep Wrangler (TJ) Sport  
  • 1998 Jeep Wrangler (TJ) SE  
  • 1998 Jeep Wrangler (TJ) Sahara  
  • 1998 Jeep Wrangler (TJ) Sport  
  • 1997 Jeep Wrangler (TJ) SE  
  • 1997 Jeep Wrangler (TJ) Sahara  
  • 1997 Jeep Wrangler (TJ) Sport