Technical Specifications
Product Features
- Material: Corrosion-resistant T304 stainless steel construction
- Tubing Diameter: 2.5-inch mandrel-bent for maximum flow
- Tip Style: Dual 4-inch double-wall with beveled edges
- Tip Finish Options: Polished stainless steel or Black Ops matte ceramic
- Muffler Design: Straight-through configuration for unrestricted flow
- Manufacturing: Assembled in Plymouth, Michigan
- Hardware: Complete installation kit included
Performance Ratings
- Loudness: 9/10 - Maximum aggressive exhaust note
- Drone: 3/10 - Noticeable but tolerable cabin resonance
- Performance: 8/10 - Significant gains in flow and power
- Visual Impact: 10/10 - Premium dual tip styling
American Manufacturing and Warranty
Handcrafted Quality
Every King of the Hill JL2 exhaust system is engineered at MRT's Plymouth, Michigan facility, ensuring consistent quality control and meticulous attention to detail. The American manufacturing process allows MRT to maintain strict standards for welding quality, fitment precision, and overall construction excellence.
Limited Lifetime Warranty
MRT backs the King of the Hill JL2 with a limited lifetime warranty covering defects in materials and workmanship for as long as you own your Jeep Wrangler JL. This comprehensive warranty protection reflects MRT's confidence in premium materials, manufacturing processes, and attention to detail.
Performance and Sound Characteristics
Aggressive Exhaust Note at Every RPM
- Idle: Commanding presence with deep, muscular tone
- Cruising: Noticeable performance sound that remains present
- Acceleration: Lively, attention-grabbing growl with enhanced bite
- Wide Open Throttle: Full muscle car roar with deep, powerful exhaust note
The King of the Hill JL2 delivers the loudest exhaust experience available from MRT while maintaining tolerable drone levels rated at 3 out of 10. This careful balance ensures you can enjoy aggressive exhaust character without excessive cabin resonance during highway driving or long-distance adventures.
Enhanced Flow and Power Delivery
The straight-through muffler design with 2.5-inch mandrel-bent tubing significantly reduces exhaust restriction compared to the factory system. This optimized flow path allows exhaust gases to exit more efficiently, reducing backpressure and extracting additional horsepower and torque from your engine.
With a performance rating of 8 out of 10, drivers experience noticeable improvements in throttle response and acceleration. The enhanced exhaust flow allows the engine to breathe more freely, optimizing power delivery whether you're navigating technical trails or merging onto highways.
Premium Construction and Design
T304 Stainless Steel Excellence
Constructed entirely from premium T304 stainless steel, the King of the Hill JL2 withstands harsh conditions including mud, water, salt, and extreme temperature fluctuations. This corrosion-resistant material ensures your exhaust maintains its appearance and performance for years, even under demanding off-road use.
The precision mandrel-bent tubing provides smooth, unrestricted exhaust flow without the crimped sections found in inferior crush-bent designs. This manufacturing process maintains consistent internal diameter throughout the system, maximizing performance while ensuring structural integrity.
Dual 4-Inch Double-Wall Tips
The dual 4-inch exhaust tips feature double-wall construction with beveled edges for premium styling and durability. The double-wall design prevents heat discoloration of the outer wall while creating depth and dimension that single-wall tips cannot match. Each tip is precision-crafted to exact specifications, ensuring perfect alignment and symmetrical appearance.
Fits Both 2.0L 4XE and 3.6L V6 Models
The King of the Hill JL2 is engineered to fit both traditional gas-powered Wrangler JL models with the 3.6L Pentastar V6 and hybrid 4XE models equipped with the 2.0L turbocharged engine. This versatility makes it the perfect choice regardless of your powertrain, delivering consistent performance gains and aggressive sound across all engine configurations.
How does it sound? The MRT Wrangler King of the Hill JL Axle Back #90R140 gives an aggressive, Get Noticed exhaust note that is present at all times.
Is there drone or resonance? The drone is noticeable but tolerable.
What if I step on it? Wide-open throttle brings out a more lively attitude with more exhaust sound, bite and deeper growl.