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2015-2017 Roush Phase 1 to Phase 2 Supercharger Upgrade Kit 727 HP

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The ROUSH Phase 2 supercharger upgrade kit builds on the outstanding performance 2015-2017 ROUSH Phase 1 supercharger system by adding proven core components and careful calibration, for an additional 57 horsepower and 65 lb-ft of torque over the 670 hp/ 545 lb-ft ROUSH 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.

The upgrade installs easily with a preset plug and play fuel pump controller, colder heat range spark plugs, and a higher boost 80 mm supercharger pulley. A ROUSH Diagnostic Tool (RDT) reflash voucher is in the box, and your upgraded Phase 2 calibration can be downloaded to your ECU in minutes by your dealer.

Included in the Kit:

  • Fuel pump controller
  • 80mm Supercharger Pulley
  • (8) NGK Spark Plugs
  • RDT Reflash Voucher

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Part # Price
421994 $2,031.74