Roush 2015-2017 Mustang 5.0L Phase 2 727 HP Upgrade Kit - 421994


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The ROUSH Phase 2 supercharger upgrade kit builds on the outstanding performance of our 2015-2016 Phase 1 supercharger system by adding proven core components and careful calibration, for an additional 57 horsepower and 65 lb-ft of torque over our 670 hp/ 545 lb-ft system (PN 421823). The result is an outstanding 727 hp/610 lb-ft of torque while retaining the daily confidence you expect from the engineering of ROUSH Performance.

Roush engineers spend hundreds of hours in the laboratory, on the dyno, and out in the eld to ensure the components and calibration deliver consistent performance in all conditions.