null

Steeda's Black Friday Sale: UP TO 55% OFF!

Roush

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

SKU:
 531 421994
 | 
MPN:
 421994
$1,322.99
$1,299.99
( saved $23.00 )

In Stock - Less than 5 available


Typically ships in 1-3 business days.
Buy Now
Longing for more power from your Roush supercharged S550 Mustang? Take your car to the next level with this supercharger upgrade kit! Taking your Mustang from 670hp to 727hp, this kit will help make sure your S550 rules the road.

Improve power. This kit makes sure your Mustang is putting down some serious power. By feeding your Mustang more fuel, more air, and more, you can be confident that this kit will get you the performance you want.

Upgrades. A Roush calibration and colder spark plugs ensure that your Mustang will run right, without detonation. The smaller diameter 80mm pulley feeds your 5.0L engine more air, improving power. A plug-and-play preset digital fuel pump controller improves fuel pump output without any need to open the fuel system.

Features & Benefits:
  • 50-state emissions legal (2015-2016)
  • CARB E.O. #D-418-29
  • Approved for sale or installation on 2017 models in the state of California
  • CARB E.O. #D-418-34
  • +57hp, +65lb-ft of torque
  • 727hp, 610lb-ft of torque
  • Digital fuel pump controller
  • 80mm pulley
  • Colder spark plugs
  • Roush/Ford Racing calibration file
  • 3-year/36,000-mile ROUSH parts only limited warranty
  • Voids optional Roush limited Powertrain/Drivetrain warranties

Note: Kit must be installed by a shop with an SAE J2534 pass-through device or Ford IDS device.


warningWARNING: California Residents: Cancer and Reproductive Harm; www.p65warnings.ca.gov

Installation Difficulty:
Moderate
Tools Required:
Basic Shop Tools
Estimated Install Time:
(approx.) 3 Hours
Vehicle Fitment:
2015, 2016, 2017

CARB Approved This aftermarket part has been granted an Executive Order (E.O.) and is approved for sale and use on motor vehicles by the California Air Resources Board (C.A.R.B.). In addition to California, this part is also legal in those states having adopted California clean air standards.

  • Free Ground Shipping

  • Enthusiast-Driven Customer Service

  • Over 35 Years in Business