Roush Performance 421994 Phase 1 to Phase 2 Supercharger Upgrade Kit 727HP

The Roush Performance Phase 1 to Phase 2 Supercharger Upgrade Kit transforms your existing Phase 1 R2300 supercharger system into a high-performance Phase 2 configuration. This upgrade adds an extra 57 horsepower and 65 lb-ft of torque over the 670 hp Phase 1 system, delivering an incredible 727 hp and 610 lb-ft of torque while maintaining the daily drivability and reliability expected from Roush Performance engineering.

Kit Includes:

• Smaller diameter 80mm supercharger pulley that increases boost and installs in minutes
• Digital fuel pump controller with plug-and-play wiring harness for easy installation
• Cooler heat range Motorcraft spark plugs to ensure complete combustion without detonation under higher boost levels
• ROUSH Diagnostic Tool (RDT) reflash voucher for downloading upgraded Phase 2 calibration to your ECU
• Complete installation instructions

Application:

This kit works with both manual and automatic 2015-2017 GT Mustangs equipped with the Coyote 5.0L DOHC V8 engine and a ROUSH R2300 Phase 1 TVS Supercharger. No cutting or splicing of factory wiring harnesses required, making installation straightforward for experienced DIYers or professional installers.

Warranty:

This supercharger upgrade kit features a 3 Year/36,000 Mile Parts limited warranty on ROUSH supplied parts only.

Note: Designed to fit Roush R2300 model superchargers only. Not approved for sale or installation in California (except 2017 models with CARB E.O. #D-418-29).