2009 JEEP WRANGLER JK  - Banks Power Monster Exhaust System - 51321-B - 51321-B | 4WD.com
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2009 JEEP WRANGLER JK  - Banks Power Monster Exhaust System - 51321-B - 51321-B

Banks Power Monster Exhaust System - 51321-B

Banks Power | Part Number: GBE51321-B


  • Tubing Size: 2.5 Inches
  • Fitment: Direct Fit
  • In_Stock: In Stock
  • In_Stock: In Stock
  • Exit Location/Type: Single Rear
  • Material: Stainless Steel
  • System Type: Cat-Back
  • Tip Included: Tip is included


  • 07-11 Wrangler JK, 2-Door
  • 3.8L 6 cylinder engine
  • Includes muffler, 2.5" tailpipe, stainless turndown
  • Made of 100% stainless steel constant-diameter piping
  • Dramatically improves air flow
  • Slashes backpressure for cooler operating temperatures
  • Polished-stainless straight-through muffler
  • Black coated stainless tip


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.


Question & Answers

1 Answered question

is the whole system made from s/s and 2 5 inch all the way through & is the s/s 409.

Asked by charlie from pearl river la on

Hi Charlie, This Banks Power Monster Exhaust System is in fact stainless front to back, it's a grade 409 stainless. Great question, thank you for your inquiry.

Answered by Jim G Ext 4806 from pearl river la 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