2011 - 14 Roush 5.0 Mustang GT Phase 1 to Phase 2 R2300 Supercharger Upgrade Kit for Sale


When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Price: $767.99

ROUSH CHARGER5.0 LITER MUSTANG PHASE 1-TO-PAHSE 2 UPGRADE KIT

ROUSH P/N: 421389

Product Features:

625 Horsepower and 525 lb-ft of torque (upgrade for previous ROUSH Supercharger 525hp, 540hp and 575hp kits/vehicles)

Upgrade Kit Includes:

  • 85mm Supercharger Pulley
  • 6-Rib Serpentine FEAD (Front Engine Accessory Drive) Belt
  • ROUSH Cold Air Induction System featuring a new 110mm MAF tube, larger clean air tube, open air box and washable/re-usable performance air filter
  • Works with 2011-2014 Ford 5.0L Mustangs equipped with the ROUSH 5.0L supercharger kits producing 525, 540 or 575 horsepower
  • To Be downloaded using the ROUSH Diagnostic Tool (RDT) software.
  • Includes ROUSH 3 Year/36,000 Mile ROUSH Parts Only limited warranty
  • VOID’S original 3 Year/36,000 Mile Powertrain/Drivetrain warranty.
  • NOT approved for sale or installation in the state of California
  • ROUSH P/N: 421389
  • Shipping applies to the continental USA only (Lower 48 States.) Alaska, Hawaii, Puerto Rico and others, kindly, request a quote.


Parts Search:


Follow