Call (800) 601-8072
Available Weekdays 8:00AM - 5:00PM PT
Latest Episode

Speed School Podcast with Gale Banks

Monster Exhaust System

Buy Now For $399.00

Add To Cart
Monster Exhaust System

Buy Now For $399.00

Add To Cart
Banks Monster Exhaust for Wrangler JK 4 Door

Monster Exhaust System

Flows up to 119% better than stock!
2.5-inch Single Exit, Chrome ObRound Tip
For 2007-2011 Jeep Wrangler 3.8L, Unlimited 4-door
Limited Inventory
MSRP $443.33


Free Shipping on orders over $250 (48 Contiguous US)*

Huge 2.5-inch stainless mandrel-bent. Straight-thru Monster muffler. Flows up to 119 Percent better than stock.

CARB E.O. Not Required

Fitment Note


✓:Wrangler 4-Door

Does Not Fit

✗:Wrangler 2-Door


Constructed entirely of heavy-gauge stainless steel, Banks Monster features a supersized, 2.5-inch tailpipe with a stainless tailpipe tip polished to a mirror finish or choose the new black tip! Monster Muffler, Banks' straight-through performance muffler, is the industry's least restrictive, more than doubling the stock flow.

Monster virtually eliminates backpressure from the catalytic converter back, for more power and efficiency, and an authoritative, yet civil, exhaust note.

Available for 2-door and 4-door models.

Includes:  Stainless Monster muffler; Stainless 2.5" tailpipe; Polished chrome or black stainless tailpipe tip; Mounting hardware.

Key Features

  • Mandrel bent Stainless Steel construction
  • Virtually eliminates backpressure
  • Lowers exhaust gas temps
  • Dramatically improves flow
  • Maximum Airflow
  • Huge 2.5 inch stainless mandrel-bent
  • Straight-thru Monster muffler
  • Flows up to 119% better than stock
  • Includes CHROME tip

Questions? Contact Support
Jeep 3.8L Monster Exhaust Installed
stock vs Banks 3.8L muffler
Outflowing the factory muffler by 119%, the exhaust note is authoritative, yet civil. Kit includes a stainless tailpipe tip in your choice of polished chrome-over stainless or high-temp Cerakote black!
chrome exhaust tip Black Exhaust Tip

free test report
Here's the TEST REPORT for your vehicle! View it right now  online »