aFe MACH Force Cat-Back Exhaust System

2012–2017 Jeep Grand Cherokee 6.4L SRT8, 2018–2021 Jeep Grand Cherokee 6.2L Trackhawk, 2018–2021 Jeep Grand Cherokee 6.4L SRT8

Part #: 49-38058

Overview

The aFe MACH Force Cat-Back Exhaust System without resonators is engineered specifically for Jeep Grand Cherokee models equipped with the powerful 6.4L SRT8 or 6.2L Trackhawk engines from 2012 through 2021. Designed for enthusiasts seeking enhanced performance and an aggressive exhaust note, this system delivers significant horsepower and torque gains while maintaining a refined sound profile. It is an ideal upgrade for drivers who want to unleash the full potential of their Jeep’s V8 HEMI engine without sacrificing factory aesthetics.

This cat-back exhaust system replaces the factory piping from the catalytic converters back, improving exhaust flow and reducing backpressure. It retains the factory exhaust tips for a seamless, stock appearance while providing a more commanding presence on the road.

Key Features

Built to maximize performance and sound quality, the aFe MACH Force Cat-Back Exhaust System offers the following key features:

• Up to +21 horsepower and +35 lb-ft of torque gains verified on a dyno
• Constructed from 3-inch mandrel-bent stainless steel tubing for unrestricted exhaust flow
• Includes dual high-flow mufflers designed to reduce high-pitched tones and exhaust drone
• Incorporates an X-pipe balance tube to evenly distribute exhaust pulses for improved efficiency
• 100% MIG-welded construction ensures strength and long-lasting durability
• Retains factory exhaust tips for a clean, OEM look
• Direct bolt-on installation with all necessary hardware included—no modifications required
• High-quality band clamps provide a leak-free 360-degree seal

Construction & Design

The MACH Force Cat-Back Exhaust is crafted from premium 304 stainless steel, known for its corrosion resistance and durability under extreme conditions. The 3-inch mandrel-bent tubing maintains consistent diameter throughout bends, preventing flow restrictions and optimizing exhaust scavenging. The system’s dual high-flow mufflers are engineered to balance sound and performance, absorbing unwanted high-frequency tones while delivering a deep, aggressive exhaust note.

All components are precision MIG-welded to ensure structural integrity and a leak-free seal. The integrated X-pipe balance tube equalizes exhaust pulses between both banks of the V8 engine, enhancing flow dynamics and reducing drone for a more enjoyable driving experience.

Performance & Sound

Designed to unleash the full potential of Jeep’s 6.4L and 6.2L HEMI engines, this cat-back exhaust system provides a verified increase of up to 21 horsepower and 35 lb-ft of torque. The improved exhaust flow reduces backpressure, allowing the engine to breathe more efficiently across the entire power band.

The dual free-flowing mufflers produce a powerful, aggressive tone that intensifies during acceleration and gear shifts, while the X-pipe balance tube minimizes exhaust drone during cruising. This results in a thrilling yet refined exhaust sound that enhances the driving experience without becoming intrusive.

Installation & Fitment

This aFe MACH Force Cat-Back Exhaust System is a direct bolt-on upgrade designed to fit 2012–2017 Jeep Grand Cherokee 6.4L SRT8 models, as well as 2018–2021 Jeep Grand Cherokee 6.2L Trackhawk and 6.4L SRT8 models. Installation requires no cutting, welding, or modifications, making it a straightforward upgrade for enthusiasts and professional installers alike.

The system retains the factory exhaust tips, preserving the vehicle’s original appearance. All necessary hardware and high-quality band clamps are included to ensure a secure, leak-free fitment.

What's Included

• 3-inch mandrel-bent stainless steel cat-back exhaust piping
• Dual high-flow mufflers
• X-pipe balance tube
• All necessary mounting hardware and clamps
• Installation instructions

Ideal For

This exhaust system is perfect for Jeep Grand Cherokee owners who want to enhance their vehicle’s performance and sound without compromising factory styling. It suits enthusiasts looking for a reliable, durable upgrade that delivers measurable horsepower and torque gains, aggressive exhaust tone, and reduced drone for daily driving comfort.

Emissions Note

This product does not require a CARB Executive Order (EO#) and is legal for sale in all 50 states.

aFe Momentum GT Carbon Fiber Cold Air Intake

2012–2021 Jeep Grand Cherokee 6.4L SRT8, 2018–2025 Dodge Durango 6.4L 392

Part #: 58-10001D

Overview

The aFe Momentum GT Carbon Fiber Cold Air Intake with Pro Dry-S filter is engineered to elevate the performance of your Jeep Grand Cherokee 6.4L SRT8 or Dodge Durango 6.4L 392. Designed for enthusiasts seeking a significant power boost and enhanced throttle response, this intake system replaces the restrictive factory air intake with a lightweight, high-flow carbon fiber assembly. It delivers improved airflow and filtration while reducing overall intake weight, making it an ideal upgrade for street and light off-road use.

With a focus on durability, efficiency, and ease of installation, the Momentum GT intake offers a perfect balance of performance and convenience for drivers who demand more from their SRT-powered vehicles.

Key Features

This intake system combines advanced materials and innovative design to maximize engine breathing and performance gains:

• Dyno-proven power gains of up to +35 horsepower and +31 lb-ft of torque
• Outflows the factory intake by 45%, with a measured airflow of 615 CFM at 7" H2O
• Race-inspired, lightweight 100% carbon fiber construction for reduced weight and enhanced durability
• Massive 8-1/2" tall, three-layer Pro Dry-S air filter featuring oil-free synthetic media for superior filtration and easy maintenance
• Utilizes factory mounting points and both original equipment air inlets to ensure maximum airflow and a secure fit
• Washable and reusable air filter media designed for street and light off-road conditions
• Premium stainless-steel T-bolt clamps and reinforced silicone couplings for strength and longevity
• Clear-coated twill weave carbon fiber housing and intake tube for a sleek, high-gloss finish that enhances engine bay aesthetics

Construction & Design

The Momentum GT intake features a unique, computer-designed one-piece carbon fiber housing that is both lightweight and heat-resistant. Its patent-pending filter-to-housing interface simplifies installation while maintaining a sealed environment to protect the intake charge from heat soak. The intake tube is crafted from the same high-gloss twill weave carbon fiber, engineered to optimize airflow dynamics and reduce weight compared to the original equipment system.

The Pro Dry-S air filter is a standout component, constructed with three progressive layers of synthetic media that provide excellent dust-holding capacity and filtration efficiency without the need for oiling. Its inverted top design increases filter surface area, extending service intervals and making maintenance straightforward.

Performance & Sound

By significantly increasing airflow and reducing intake restriction, this cold air intake system delivers measurable horsepower and torque improvements, enhancing acceleration and throttle response. The carbon fiber construction also helps reduce heat transfer, ensuring cooler, denser air reaches the engine for optimal combustion. Additionally, the intake produces a more aggressive induction sound that complements the performance character of the 6.4L SRT engines without being overly loud or intrusive.

Installation & Fitment

The aFe Momentum GT Carbon Fiber Cold Air Intake is designed for a direct bolt-on installation using factory mounting locations and air inlets, requiring no permanent modifications or cutting. The system includes all necessary hardware, and its simplified design with fewer parts ensures a straightforward and secure fitment process. Installation can typically be completed with basic hand tools in under an hour.

What's Included

• One-piece carbon fiber intake housing
• Carbon fiber intake tube
• 8-1/2" tall Pro Dry-S washable and reusable air filter
• Reinforced silicone couplings
• Premium stainless-steel T-bolt clamps
• All necessary mounting hardware and instructions

Ideal For

This intake system is ideal for Jeep Grand Cherokee 6.4L SRT8 and Dodge Durango 6.4L 392 owners who want to maximize their vehicle’s performance potential with a lightweight, durable, and visually striking cold air intake. It suits enthusiasts looking for reliable power gains, improved throttle response, and enhanced engine sound without compromising daily drivability or requiring complex installation.

Emissions Note

Some or all applications of this product are 50-state emissions exempt. Please refer to CARB EO# D-550-58 for specific details and compliance information.

aFe 90MM Throttle Body

2013–2023 Chrysler 300 / Dodge Challenger 5.7L Hemi & 6.4L 392

Part #: 46-39107

Overview

The aFe 90MM Throttle Body Kit is a high-performance upgrade designed specifically for 2013 to 2023 Chrysler 300 and Dodge Challenger models equipped with the 5.7L Hemi or 6.4L 392 engines. This throttle body replaces the factory 80mm unit with a larger 90mm bore, allowing for increased airflow into the engine. The result is improved throttle response and enhanced horsepower potential, especially when combined with other performance modifications.

Engineered for enthusiasts seeking a reliable, bolt-on solution, this throttle body kit requires no tuning and features plug-and-play electronics for a seamless upgrade. It is an ideal choice for those looking to maximize their vehicle’s performance without complicated installation or calibration.

Key Features

This aFe throttle body kit offers several advanced features that contribute to its performance and ease of use:

• 90mm bore diameter for increased airflow compared to the stock 80mm throttle body
• No tuning required—plug-and-play electronics ensure hassle-free integration
• Billet aluminum adapter crafted from 6061-T6 for strength and lightweight durability
• Direct bolt-on design using factory mounting points for simple installation
• Includes gasket and all necessary hardware for a complete installation
• Serrated and swirl design in the adapter promotes intake turbulence for improved combustion efficiency
• Compatible with 2013–2023 Chrysler 300 and Dodge Challenger 5.7L Hemi and 6.4L 392 engines
• Recommended for use with aFe cold air intake systems to maximize performance gains

Construction & Design

The throttle body adapter is precision-machined from premium 6061-T6 billet aluminum, known for its excellent strength-to-weight ratio and corrosion resistance. This high-quality material ensures durability under demanding engine conditions while maintaining a lightweight profile. The adapter’s serrated and swirl combination design enhances air intake dynamics by creating turbulence that helps atomize fuel more effectively, leading to a more complete combustion cycle. This engineering detail contributes to increased horsepower, torque, and throttle responsiveness.

Performance & Sound

By increasing the throttle body bore size from 80mm to 90mm, this aFe throttle body significantly improves airflow into the engine. This upgrade enhances throttle response, allowing the engine to react more quickly to driver input. While the primary focus is on performance gains, users may also notice a subtle improvement in engine sound due to the increased air volume moving through the intake system. Performance improvements become more pronounced when paired with other modifications such as cold air intakes and exhaust upgrades.

Installation & Fitment

The aFe 90MM Throttle Body Kit is designed for a direct bolt-on installation using all factory mounting locations, ensuring a secure and stable fit. Installation is straightforward and does not require any tuning or complex adjustments, thanks to the plug-and-play electronic throttle control compatibility. This kit is compatible with 2013 through 2023 Chrysler 300 and Dodge Challenger models equipped with the 5.7L Hemi or 6.4L 392 engines. It is important to note that this throttle body will not fit 2005–2012 models due to a different throttle position sensor (TPS) connector.

For optimal performance, it is recommended to install this throttle body in conjunction with an aFe cold air intake system.

What's Included

• 90mm throttle body
• 6061-T6 billet aluminum adapter
• Gasket
• All necessary mounting hardware

Ideal For

This throttle body kit is ideal for performance enthusiasts and daily drivers who want to enhance their Chrysler 300 or Dodge Challenger’s throttle response and horsepower without the need for custom tuning. It suits those upgrading their intake systems or building a more aggressive performance setup, providing a reliable and easy-to-install solution that complements other bolt-on modifications.

Emissions Note

This product is not currently CARB exempt and is not legal for sale or use on any California-registered vehicles or in states that enforce California emissions standards.

Ripp HEMI High Performance Coil Packs

05-25 5.7L, 6.1L, 6.2L, & 6.4L  HEMI Engines

MV8-CPK (8 Coilpacks)

Our coil pack is engineered from the ground up with higher quality materials, and increased amount of windings (turn ratio) in the primary and secondary winding. This provides a boost in millijoule power output, and this results in an increase in spark energy. With a stronger spark, cylinder flame speed is increased and thus adding up to an additional 20hp on the 5.7L and 25-30whp on the 6.4L. With this increased power output, you can expect a more responsive throttle input and a better driving experience overall. (For more technical information please see the tech notes below.)

Don't forget a fresh set of spark plugs. We recommend NGK Spark Plugs.

• Each order Includes all 8 coilpacks
• Direct bolt-on installation, plug and play
• Highest quality internal components and finish
• MOPAR Orange, Purple, Green or Steel Gray high temperature heat resistant outer housing 
• Heat resistant silicone boot
• Compatible with Naturally Aspirated and Forced Induction engines
• Improved Throttle Response
• Improved POWER
• Improved MPG
• No Tuning Required!!
• Heavy duty primary copper core winding.
• Higher quality Iron core with stronger laminations.
• Increased amount of secondary core windings.
• Precision Spool to promote Orthocycling winding and mitigate wild winding.  
• Sustained power delivery even at high RPM operation
• High Density Polymer Housing. 
• Heavy Duty, high-temperature, epoxy filled housing resists shock and vibration. Our dielectric compound completely penetrates coil windings assuring perfect insulation even upon exposure to high voltage conditions. Engineered to resist humidity, wear, vibration, impact and chemicals such as gasoline, oils and brake fluids. Will not degrade or crack even under severe thermal cycling.

*Not compatible with older generation 2003-2005 "gen III" engines.*   Please double check the year make and model of your vehicle and engine type. 

Fits the following vehicles:

• 2005 - Current: Dodge Charger/ Challenger V8
• 2005 - Current: Chrysler 300 V8
• 2007 - Current: RAM 1500 V8 (note: early 2007 vehicles might have have a gen III engine)
• 2007 - Current: Jeep Grand Cherokee V8 (note: early 2007 vehicles might have have a gen III engine) 5.7, SRT 
• 2007 - Current: Dodge Durango V8 (note: early 2007 vehicles might have have a gen III engine) 5.7, SRT
• 2021 - Current: Jeep Wrangler rubicon w/ 392 engine (V8)
• All Scat Pack, 392, SRT and Hellcat models.
• And many more V8 Hemi vehicles. 

TECH NOTES

RIPP Technical information about cylinder flame speed and how an upgraded ignition system will directly effect power. 

An Internal combustion engine's "flame speed" refers to the rate at which the air-fuel mixture burns during the combustion process. This speed significantly impacts engine performance and efficiency. The faster flame speed will increase cylinder pressure. When a spark is hotter, it ignites the air-fuel mixture more rapidly, leading to faster combustion, and an increase in pressure. Higher cylinder pressure = more torque pushing down on the piston.

Flame front propagation speed: As the flame front propagates faster across the combustion chamber, the fuel burns more efficiently, releasing more energy. This, in turn, enhances the engine's power and responsiveness. Additionally, with a faster flame speed, the combustion process is completed sooner, reducing the chance of incomplete burn or unburned hydrocarbons being released into the exhaust gases. In summary, optimizing the flame speed by utilizing more spark energy can significantly improve engine performance. It enables the engine to operate more efficiently, delivering increased power output, improved fuel economy.

Spark Energy is measured in Millijoules (mj). A Factory coilpack will generate 35.8mj. This mj value is considered low for the cylinder displacement value, piston surface area and air/fuel mixture. A RIPP coilpack will generate 53.6mj. This 17.8mj increase over stock will dramatically increase pressure per square inch across the piston surface. At first start up you'll immediately notice a smoother operating engine, and a "calmer" exhaust tone. This is due to less waste or unburnt hydrocarbons and fuel. Engine response and engine horse power will increase throughout the RPM range. 

E3 Spark Plugs

11-24 Chrysler 300 /  Dodge Challenger / Charger 6.4L 392

E3.74

The E3.74 Automotive Spark Plug is a high-performance replacement plug designed for vehicle. Engineered with E3’s patented DiamondFIRE technology, the plug promotes a faster, more complete combustion cycle—boosting horsepower, increasing fuel efficiency, and reducing emissions over the long term. This spark plug features a 14mm thread diameter, 1.000" reach, and taper seat to ensure a precise fit for your vehicle engine. Its triple-legged ground electrode secures the DiamondFIRE tip, enhancing heat dissipation and generating greater turbulence in the combustion chamber for maximum efficiency. The fixed-gap design eliminates the need for adjustments and delivers consistent spark performance across thousands of miles. Backed by a 5-year or 100,000-mile warranty, the E3.74 offers durability and peak engine performance for drivers who demand more from their vehicle.

• Patented DiamondFIRE Technology: Optimizes combustion for better throttle response, horsepower, and fuel economy
• Three-Leg Ground Electrode: Stabilizes the electrode for enhanced heat transfer and increased combustion turbulence
• Fixed DiamondFIRE Spark Gap: Factory-set for consistent ignition and long-term reliability—no gapping required
• Extended Service Life: Built to perform for 100,000 miles or 5 years under typical driving conditions
• Precision Fit: 14mm thread diameter, 1.000" reach, 5/8" hex, taper seat design
• Lower Emissions: Reduces unburned hydrocarbons for cleaner, more efficient engine performance