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Roush Dualbelt Supercharger Phase 1 to 2 Upgrade Kit (05-09 GT)

Roush Mustang Dualbelt Supercharger Phase 1 to 2 Upgrade Kit (05-09 GT) 421105

Regular Price $2,099.99
Sale Price $2,015.99
Manufacturer Part # 421105

Availability: Usually Ships in 7-10 Business Days
Product Code: 4279

Roush's Dualbelt Supercharger upgrades your Phase 1 kit to the more powerful Phase 2 kit, while reusing most of the parts to save time and money. You'll bring your horsepower up to 550 and 500 lb/ft of torque at the flywheel. 421105.
Key Product Specs
  • If you've installed the Phase 1 Dualbelt Supercharger Kit from Roush and want to steal the show with even more power, Roush's Dualbelt Supercharger Phase 1-2 Upgrade is just what your 2005-2009 Mustang GT needs. It boasts power gains of 75 HP and 65 lb/ft of torque over the phase 1 kit, providing for a total 550 horsepower and 500 lb/ft of torque.

  • Roush has specifically designed these superchargers to be easily upgraded by reusing a lot of the parts that you have installed from the phase 1 kit. The upgrade kit comes with a Spider crank pulley (8 rib x 183mm), a GT500 fuel system upgrade and the Roush phase 2 calibration.

    Key Specs
  • Phase 1 to Phase 2 upgrade
  • 550 HP and 500 lb/ft of torque
  • Only works with manual transmissions

    Fits 2005-2009 Mustang GT

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