Banks Monster Exhaust, Wrangler YJ


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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. Banks Monster muffler, its straight-through performance muffler, is the industry’s least restrictive. In comparison tests, Banks muffler flowed 498.2 cfm at 1 psi—a 139% improvement over the stock exhaust’s 208.6 cfm, and about 44% better than the nearest competitor.

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


Fits these Vehicles

  • 91-95 Jeep Wrangler (YJ)

Fits these Engines

  • Jeep 4.0L I-6 Gasoline


Parts Included

  • Muffler, Banks Monster (1)
  • Tailpipe (1)
  • Tip, Polished Stainless Steel (1)
  • Clamp Exhaust 2½” (1)
  • Band-Clamp, Exhaust 2½” (1)
  • Clamp Exhaust 2¼” (1)
  • Product Registration Card (1)
  • Warranty Statement (1)
  • Decal, Banks Power (2)


Product Details

Includes: Stainless Monster muffler; Stainless 2.5″ tailpipe; Polished stainless tailpipe tip; Mounting hardware; Comprehensive Owner’s Installation Manual

Vehicle/Manufacturer: 87-95 Jeep Wrangler YJ

Product Code: 4PL51311