Stainless Mid Pipe System For 2018-2021 Jeep TrackHawk 6.2L, 2012+ SRT8 Jeep 6.4L

Unrestricted Exhaust Flow for the Supercharged and Naturally Aspirated HEMI Platforms

The Cornerstone Performance CPS-MPK-TH-CC is a 3-inch stainless steel catless mid pipe system built specifically for the 2018-2021 Jeep Grand Cherokee Trackhawk 6.2L supercharged HEMI and the 2012-2021 Jeep Grand Cherokee SRT8 6.4L HEMI. Engineered to bolt directly to your factory exhaust manifolds at the OEM connection point in front of the X-pipe, the CPS-MPK-TH-CC replaces the restrictive stock mid pipes with smooth mandrel-bent stainless tubing that flows unrestricted from the headers back. Also fits the 2021-2025 Dodge Durango SRT Hellcat 6.2L and 2018-2025 Dodge Durango SRT 392 6.4L. No drilling, no cutting, no welding required. Proudly made in the USA with a limited lifetime warranty.

What Free-Flowing Mid Pipes Do for a Supercharged HEMI

The factory mid pipes on the Trackhawk and SRT8 are engineered around emissions compliance and manufacturing cost, not peak exhaust flow. By replacing them with the CPS-MPK-TH-CC's 3-inch mandrel-bent stainless tubes, you eliminate the primary restriction between the headers and the exhaust system behind it. Mandrel bending maintains a consistent internal diameter through every curve, which means no pinch points, no turbulence, and significantly reduced backpressure across the entire RPM range. The result is improved exhaust scavenging, sharper throttle response, and a dramatic improvement in exhaust tone the deep, aggressive character the Trackhawk's supercharged 6.2L was designed to produce.

Because the CPS-MPK-TH-CC is a catless system, it is intended for off-road and closed-course competition use only. The pre-installed O2 sensor bungs allow direct reinstallation of your factory oxygen sensors. Note that without catalytic converters, CEL codes may appear on untuned vehicles; an aftermarket tune or O2 sensor simulators are recommended for track-only builds.

Key Features

• 3-inch internal diameter stainless steel mandrel-bent mid pipe system for maximum exhaust flow
• Bolts directly to factory exhaust manifolds at the OEM X-pipe connection point no drilling, no cutting, no welding
• Pre-installed O2 sensor bungs for direct reinstallation of factory oxygen sensors
• Catless design eliminates catalytic converter restriction for off-road and track use
• Fits 2018-2021 Jeep Grand Cherokee Trackhawk 6.2L, 2012-2021 Jeep Grand Cherokee SRT8 6.4L, 2021-2025 Dodge Durango SRT Hellcat 6.2L, and 2018-2025 Dodge Durango SRT 392 6.4L
• Stainless steel construction resists corrosion and withstands extreme heat cycles
• Drill-less installation with all hardware included
• Proudly manufactured in the USA
• Backed by a limited lifetime warranty from Cornerstone Performance
• Part number CPS-MPK-TH-CC fits the factory connection architecture of both the 6.2L supercharged and 6.4L naturally aspirated HEMI platforms

Fitment

The CPS-MPK-TH-CC is precision-engineered for the following vehicles. Confirm your engine, model year, and trim before ordering. This system is catless and intended for off-road and closed-course competition use only.

Specifications

What's Included

• Left mid pipe (stainless steel, 3 in., mandrel-bent)
• Right mid pipe (stainless steel, 3 in., mandrel-bent)
• Pre-installed O2 sensor bungs
• Complete hardware kit for drill-less bolt-on installation

About Cornerstone Performance

Cornerstone Performance is a USA-based manufacturer specializing in high-performance exhaust systems and mid pipe solutions for American muscle and performance SUV platforms. Every CPS-MPK-TH-CC unit is designed, fabricated, and assembled domestically to exacting fitment tolerances and backed by a limited lifetime warranty. Cornerstone's direct-fit engineering approach means no guesswork, no modification, and no trips to a fabrication shop — just a bolt-on upgrade that delivers real, measurable results on the track.

Frequently Asked Questions

The CPS-MPK-TH-CC fits the 2018-2021 Jeep Grand Cherokee Trackhawk 6.2L supercharged HEMI, the 2012-2021 Jeep Grand Cherokee SRT8 6.4L HEMI, the 2021-2025 Dodge Durango SRT Hellcat 6.2L, and the 2018-2025 Dodge Durango SRT 392 6.4L. Confirm your exact model year and engine before ordering.

No. The CPS-MPK-TH-CC is engineered specifically for the high-performance SRT8 and Trackhawk variants with their unique 6.2L and 6.4L HEMI exhaust manifold and X-pipe architecture. It does not fit standard Grand Cherokee models with the 3.6L V6 or 5.7L HEMI engines.

Possibly, on untuned vehicles. The system includes O2 sensor bungs so your factory oxygen sensors reinstall directly, but the absence of catalytic converters can cause the downstream sensors to flag a fault. An aftermarket ECU tune or O2 sensor simulators are commonly used on track-only builds to address this.

No. This is a catless mid pipe system intended for off-road and closed-course competition use only. Running catless mid pipes on public roads violates the Clean Air Act, which requires federally compliant catalytic converters on all street-driven vehicles in the United States. If you need a street-legal option, ask us about high-flow catalytic converter mid pipe alternatives.

No. The CPS-MPK-TH-CC is a direct bolt-on system. It connects at the factory manifold flanges and uses the OEM connection point in front of the X-pipe. All hardware is included for a drill-less installation. No welding, cutting, or fabrication is required.

Yes. The CPS-MPK-TH-CC fits both the Jeep Grand Cherokee Trackhawk and SRT8 platforms as well as the Dodge Durango SRT Hellcat and SRT 392 variants. The exhaust architecture shared across these platforms allows the same mid pipe system to serve all four applications with a direct bolt-on fit.

Removing the catalytic converters and replacing the restrictive factory mid pipes with free-flowing 3-inch mandrel-bent stainless tubing produces a significantly more aggressive, deeper exhaust note. The sound character depends heavily on your muffler and axle-back configuration. At wide-open throttle the supercharged 6.2L and naturally aspirated 6.4L HEMI engines produce a pronounced, throaty roar that is noticeably louder and more characterful than the OEM system.

Under the federal Magnuson-Moss Warranty Act, a manufacturer cannot void your factory warranty solely because you installed an aftermarket part. They must demonstrate that the aftermarket part directly caused the specific failure being claimed. However, because the CPS-MPK-TH-CC is a catless system intended for track use, it is best suited for dedicated competition builds or vehicles no longer under factory warranty coverage.

Yes. The kit includes installation hardware and guidance for a straightforward bolt-on install. A basic socket set, wrench, and WD-40 for the factory hanger grommets are all that is typically needed. A lift or jack stands are recommended for safe access to the underside of the vehicle.

Cornerstone Performance backs the CPS-MPK-TH-CC with a limited lifetime warranty covering materials and craftsmanship. Contact Cornerstone Performance directly for warranty claim details and terms.

Installation Overview

1. Safely raise the vehicle on a lift or secure jack stands and allow the exhaust system to cool completely before starting.
2. Disconnect the factory oxygen sensors at the mid pipe section and set them aside.
3. Remove the factory mid pipes by unbolting at the exhaust manifold flanges and disconnecting at the factory X-pipe connection point.
4. Position the CPS-MPK-TH-CC left and right mid pipes and align to the manifold flanges and X-pipe connection.
5. Hand-thread all fasteners before torquing to spec to ensure proper alignment across all connection points.
6. Reinstall factory oxygen sensors into the pre-installed O2 bungs on the CPS-MPK-TH-CC mid pipes.
7. Torque all flange hardware and connection hardware to manufacturer specification using the included hardware kit.
8. Verify at least 1-inch clearance between the pipes and all brake lines, fuel lines, and rubber components before lowering the vehicle.
9. Start the vehicle and inspect all connections for exhaust leaks before driving.

WARNING: These pipes are not street legal in the United States for use on DOT roads and violate the Clean Air Act, which requires federally compliant catalytic converters on all street-driven vehicles. The CPS-MPK-TH-CC is sold for off-road and closed-course competition use only on non-street-legal race vehicles in sanctioned events.

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.