Product highlights for the 2015-2017 Mustang Phase 1 to Phase 2 Supercharger Upgrade Kit 727 HP:
- 727 hp @ 6,850rpm and 610 lb-ft @ 5,100rpm
- Preset plug and play digital fuel pump controller safely and
reliably increases fuel pump output without opening fuel
- Cooler heat range NGK spark plugs help ensure
complete combustion without detonation under the higher
boost levels of Phase 2
- Smaller diameter 80 mm pulley increases boost, installs in
minutes, requiring no belt replacement
- ROUSH/Ford Racing Phase 2 calibration file delivered with
exclusive ROUSH Diagnostic Tool (RDT)
- Includes 3-year/36,000-mile ROUSH Parts only limited
- Voids optional Roush limited Powertrain/Drivetrain warranties
- 50-State emissions-legal on 2015-2016 Mustangs (CARB E.O. #D-418-29). NOT APPROVED for sale or installation on 2017 model year in the state of California, or any other states that require an Executive Order Number.
The ROUSH Phase 2 supercharger upgrade kit builds on the
outstanding performance of our 2015-2017 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 field to ensure the components
and calibration deliver consistent performance in all
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
Included in the Kit:
- Fuel pump controller
- 80mm Supercharger Pulley
- (8) NGK Spark Plugs
- RDT Reflash Voucher
50-State emissions-legal on 2015-2016 Mustangs (CARB E.O. #D-418-29). NOT APPROVED for sale or installation on 2017 model year in the state of California, or any other states that require an Executive Order Number.
This kit comes with an extended parts warranty (ROUSH Supplied Parts Only), which is good for 3 years or 36,000 miles from the date of retail purchase. Please note that if this system is installed on a 2015-2017 ROUSH Stage 3 Mustang, the vehicle's powertrain warranty will be voided.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov