2.40" Upper Supercharger Pulley

The Metco Motorsports 2.40" upper pulley is a precision-machined supercharger pulley upgrade designed for enhanced performance. This interchangeable unit is constructed with an electroless nickel-plated steel pulley hub, a durable pulley drive ring, and a stock-appearing front pulley cover. Both the ring and cover are anodized in black, and all fasteners are either stainless steel or zinc-plated for longevity. The components are precisely machined on a state-of-the-art CNC lathe and perfectly balanced to ensure smooth operation across all engine speeds and to maximize reliability. This pulley is engineered to provide an approximate boost increase of +8-10 PSI. It is designed for applications such as 2015 and newer Hellcat Challengers and Chargers, Trackhawks, Demons, Redeyes, Durango, and TRX models. The pulley ring and cover are anodized black, and all fasteners are stainless steel or zinc-plated. All components are available separately, allowing for boost changes simply by swapping the outer pulley drive ring. Installation of this pulley is intended for professional installers only, as it requires disassembly of the upper portion of the supercharger and removal of the supercharger snout. Installation instructions are not provided. A PCM calibration revision is required to accommodate the increased airflow after changing the supercharger pulley. While some installers have reportedly used larger pulley sizes without PCM tune revisions, it is always suggested to review the tune to confirm proper air/fuel and timing calibrations for optimal reliability and longevity. Note that quoted boost gains are approximate, and results may vary. The 2.85" pulley is recommended for street applications, while pulleys 2.75" and smaller are intended for race applications or those using supplemental injection; consult your tuner for specifics. The Gates K100572HD belt is appropriate for applications using the 2.85", 2.75", or 2.65" supercharger pulley. Installation of this pulley may affect your vehicle's warranty, and the user assumes all risks.