PART NUMBER: 421387

2011-2013 ROUSH 5.0L Mustang 575hp Supercharger Upgrade Kit
575 Horsepower and 505 lb-ft of torque (upgrade to previous 525hp or 540hp kits/vehicles)

Upgrade your 2011-2013 Stock ROUSH 525HP or 540HP Supercharged 5.0L Mustang GT to the Power of  the 2013 ROUSH 575HP Supercharger with this Upgrade Kit.  With the release of the 2013 Mustang 5.0L GT,  ROUSH made the move to upgrade their Superchargers to 575HP and 505 Torque, and now offers this upgrade package for customers to reach that power level on eariler systems and still retain the ROUSH 3 year/ 36,000 mile compete drivetrain warranty. 

This package works with the 2011-2013 Mustangs equipped with the ROUSH 5.0L Supercharger Kits producing 525 or 540 horsepower.  Simply place the order for the 575HP Upgrade Kit and you will receive a 85mm pulley,  new belt, pre-paid Postage Box, and instalation manual.  All you have to do is install the new pulley and belt, and ship your Engine Computer (PCM) to ROUSH for the Upgraded Calibration.  The PCM will arrive back to your door with the New Roush Calibration and ready for instalation.

Upgrade kit includes:

- 85 mm pulley
- Shorter FEAD belt
- Unique ROUSH PCM calibration
- 575 HP 505 LB-FT

Keeps original ROUSH 3 year/ 36,000 mile compete drivetrain warranty
NOT AVAILABLE FOR SALE OR INSTALLATION IN THE STATE OF CALIFORNIA


APPLICATIONS:

11-'13 Mustang 5.0L-V8 Coupe - Manual 11-'13 Mustang 5.0L-V8 Convertible - Manual
11-'13 Mustang 5.0L-V8 Coupe - Automatic 11-'13 Mustang 5.0L-V8 Convertible - Automatic

KIT CONTAINS:
(1) 85mm Pulley (1) Pre-paid Postage Box
(1) FEAD Belt (1) Installation Manual