MBRP 00-06 Jeep Wrangler (TJ) Inline-4 2.5L Inline-6 4.0L Cat Back Single Off-Road Turn Down Alum Ex

SKU: S5522AL / UPC: 882663111558

MBRP Cat-Back Exhaust System for 2000-2006 Jeep Wrangler TJ: 2.5L Inline-4 and 4.0L Inline-6 Engines

The MBRP cat-back exhaust system is engineered for off-road enthusiasts seeking enhanced engine breathing and a deeper, more aggressive exhaust note. This single-side off-road turn-down design replaces the restrictive factory setup from the catalytic converter back, allowing freer exhaust flow that boosts horsepower and torque while reducing under-hood heat for improved fuel efficiency and engine durability. Built with mandrel-bent tubing to eliminate flow restrictions, it outperforms stock systems and many aftermarket options by delivering consistent power gains across the RPM range, making it the clear pick for TJ owners who demand reliable performance on trails or highways.

Precise Vehicle Fitment

The MBRP S5522AL fits seamlessly on these models without modifications:

• Year Range: 2000-2006
• Make: Jeep
• Models: Wrangler (TJ), including Unlimited (LJ) variants from 2004-2006
• Engines: Inline-4 2.5L or Inline-6 4.0L

This direct bolt-on compatibility ensures a hassle-free install on both short-wheelbase TJ and extended Unlimited bodies, with an extension pipe adjustable for regular TJ length.

What's Included in Your Purchase

Every MBRP S5522AL kit arrives complete with all necessary components for a full cat-back replacement:

• Extension pipe (cut to length by 10 inches for standard TJ models)
• 2-bolt flange connection kit with fasteners for secure mating to the factory catalytic converter outlet
• High-flow muffler (single inlet/single outlet, wrapped perforated core construction)
• 2.5-inch band clamp for muffler inlet
• Hang Tight hanger assembly with mounting clamp for easy rear suspension integration
• Off-road turn-down tip (3.5-inch outlet diameter, round shape, slant-cut with rolled edge, 304 stainless steel polished finish)

All hardware, including bolts, nuts, and clamps, is provided for a complete installation. No additional tips or adapters are required.

Key Specifications and Build Details

• Part Number: S5522AL
• UPC: 882663111558
• Material: 16-gauge aluminized steel throughout for corrosion resistance in moderate conditions
• Pipe Diameter: 2.5 inches (consistent mandrel-bent tubing for smooth flow)
• Exhaust Configuration: Cat-back, single rear exit with off-road turn-down orientation
• Muffler Details: Steel construction, aluminized finish, natural color
• Tip Details: Integrated turn-down style, no separate polished cap needed
• Product Weight: 21 pounds
• Shipping Box Dimensions: 35 inches long x 11 inches wide x 6 inches high

Performance and Sound Advantages

This system channels exhaust gases more efficiently than factory pipes, resulting in measurable increases in low-end torque for quicker acceleration off the line and sustained power on steep inclines. The perforated-core muffler tames drone for daily driving while amplifying a throaty rumble under throttle, giving your TJ a distinctive presence without excessive noise. Compared to other exhausts, its aluminized steel build holds up longer against rust and road debris, paired with precise engineering that keeps EGTs lower for cooler-running engines during extended off-road sessions.

Installation Overview

Expect a 1-2 hour install with basic tools: Soak stock fasteners in penetrating oil, cut the factory pipe just after the muffler, remove the old tail section, then bolt up the new extension pipe (shorten as needed), slide on the muffler with clamp, attach the hanger to the factory isolator, and secure the turn-down. Torque band clamps to 45 lb-ft and recheck after 50-100 miles of driving. Full instructions are included in the box.

Backed by a 3-year warranty against manufacturing defects for the original owner, the MBRP S5522AL stands as the go-to exhaust upgrade for TJ drivers prioritizing power, fit, and value in one durable package.

This Part Fits: