The Metco Motorsports Interchangeable Supercharger Pulley Kit is a precision-machined upper pulley system designed for 6.2L Supercharged Gen 3 HEMI applications, including the Hellcat, Redeye, Demon, Trackhawk, Durango Hellcat, and Ram TRX. Built around Metco’s interchangeable pulley design, the system allows owners to select a pulley diameter that matches their vehicle’s performance goals, supporting everything from a stock-diameter replacement to more aggressive boosted combinations. Dusterhoff Racing offers this pulley in 2.65″, 2.75″, 2.85″, 2.95″, and 3.35″ sizes, providing several options for properly configured street and performance builds. The Metco system combines precision-machined components with a design focused on reliable belt engagement and easy future pulley changes. For Gen 3 HEMI owners looking to increase supercharger speed and boost or build a more flexible pulley combination, this system provides a proven foundation for the next stage of the build.

One of the biggest benefits of the Metco system is its interchangeable pulley ring design. Once the pulley hub is properly installed, the outer drive ring can be changed to alter the pulley configuration without replacing the entire assembly. This gives owners more flexibility as the vehicle evolves, particularly when transitioning between different fuel types, tuning strategies, or supporting modifications.

Dusterhoff Racing offers five pulley sizes to cover a range of Gen 3 HEMI performance goals. The 3.35-inch pulley maintains the stock pulley diameter, making it useful for owners who want the benefits of Metco’s interchangeable system without immediately increasing supercharger speed. Moving down to the 2.95″, 2.85″, 2.75″, or 2.65″ options progressively increases supercharger speed and can increase boost pressure when used in the proper combination. Actual boost changes can vary based on the vehicle, supercharger, lower pulley configuration, airflow modifications, and other factors.

Metco also places significant emphasis on supercharger belt engagement. The pulley groove shape, height, and spacing are engineered to maximize contact with the belt. According to Metco, this approach provides the necessary belt engagement without requiring an aggressive textured pulley surface that can contribute to increased belt noise, belt dust, and accelerated wear.

Pulley selection should always be matched to the complete performance combination. Metco recommends its 2.85-inch and larger pulley configurations for street applications, while 2.75-inch and smaller configurations are intended for race-oriented applications or combinations using supplemental injection. Fuel quality, injector capacity, fuel system capability, calibration, cooling, lower pulley size, and overall engine combination should all be considered before selecting a smaller supercharger pulley.

A proper custom tune is an important part of any pulley upgrade. Increasing supercharger speed changes airflow and boost, meaning the PCM calibration must be configured for the specific vehicle and modification combination. The appropriate supercharger belt must also be used, with Metco specifically identifying the Gates K100572HD for its 2.85″, 2.75″, and 2.65″ configurations.

Whether you’re building a responsive street-driven Hellcat or stepping into a more aggressive E85 combination, the Metco Motorsports Interchangeable Supercharger Pulley Kit provides the flexibility, precision, and performance-focused construction needed for a properly configured 6.2L Gen 3 HEMI build.

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Specifications & Features

• Manufacturer: Metco Motorsports
• Product: Interchangeable Supercharger Pulley Kit
• Product Type: Upper Supercharger Pulley System
• Engine Compatibility: 6.2L Supercharged Gen 3 HEMI
• Vehicle Compatibility: Dodge Challenger Hellcat, Dodge Charger Hellcat, Dodge Challenger Redeye, Dodge Demon, Jeep Grand Cherokee Trackhawk, Dodge Durango Hellcat, Ram TRX, and other compatible 6.2L supercharged HEMI configurations
• Available Dusterhoff Racing Sizes: 2.65″, 2.75″, 2.85″, 2.95″, and 3.35″
• Stock-Diameter Option: 3.35″
• Street-Oriented Options: Metco recommends 2.85″ and larger pulley configurations for street applications
• Race-Oriented Options: Metco identifies 2.75″ and smaller pulley configurations for race applications or vehicles using supplemental injection
• Pulley System: Interchangeable drive-ring design
• Pulley Hub Material: Precision-machined stainless steel
• Pulley Ring Finish: Black anodized
• Front Cover: Stock-appearing black anodized cover
• Manufacturing: Precision CNC-machined and balanced
• Belt Engagement: Pulley groove profile is designed to maximize belt contact
• Recommended Belt: Gates K100572HD for Metco 2.65″, 2.75″, and 2.85″ pulley configurations
• Tuning Required: Yes, calibration should be properly adjusted for the selected pulley and complete vehicle combination
• Installation: Professional installation recommended
• Weight: Not specified by manufacturer
• Overall Size: Varies based on selected 2.65″, 2.75″, 2.85″, 2.95″, or 3.35″ pulley
• Color: Black anodized pulley components with machined stainless-steel hub
• Year Compatibility: Varies by vehicle platform and supercharger configuration
• Primary Benefits: Increased supercharger speed with smaller pulley selections, increased boost potential, interchangeable pulley sizing, strong belt engagement, precision construction, and flexibility for future performance changes
• Primary Uses: Street performance builds, custom-tuned power packages, E85 combinations, race applications, and upgraded supercharged Gen 3 HEMI vehicles
• Supporting Modifications: Requirements vary based on pulley size and combination. Fuel system, injectors, cooling, spark plugs, belt system, tuning, and other supporting modifications may be necessary.
• Fitment Note: Pulley selection should be based on the specific vehicle, supercharger, fuel type, lower pulley configuration, supporting modifications, and tuning strategy. Consult your tuner before selecting a smaller pulley size.