The Edelbrock Stage II Upgrade Kit part #15882 allows customers using the 1588/15880 supercharger (2011-14 5.0L Mustang) to upgrade to stage 2. The Edelbrock Stage II Upgrade Kit part #15882 includes a 3.25in. supercharger pulley, complete competition air intake system, Gatorback belt, and an updated calibration file. This upgrade is intended for racing applications only and is not legal for use on pollution-controlled vehicles. A properly completed race-only form will need to be signed and submitted by the customer and accepted by Edelbrock to receive the race-only calibration file. A race-only calibration file will need to be modified by the customer for the specific race engine configuration.
Installation InstructionsMaterial Safety Data Sheet
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2012-2013 | Ford | Mustang | Boss 302 |
| 2011-2014 | Ford | Mustang | GT |
Most items ship directly from authorized distributors. Lead times vary by brand and availability.
Returns are permitted within 30 days of receiving your order under specific conditions. For more information, view our Return & Refund Policy
Professional installation available at our Metro Atlanta facility. Contact us to schedule your build.

