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Upgrade Kit, Dual Belt Phase 1 to Phase 2 R2300


$2,015.99

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  • Model: R421105
  • Manufactured by: ROUSH



Please allow 1-5 business days for product to ship. Most items are dropped shipped from manufacture.

ROUSH PERFORMANCE Upgrade Kit, Dual Belt Phase 1 to Phase 2 R2300

Mustang: 2009, 2008, 2007, 2006, 2005

Product Features

  • Not 50 State Legal
  • Mustang Supercharger Duel Belt FEAD system works with 2005-2009 Mustangs.

    This supercharger upgrade includes the parts needed to convert a Dual Belt Phase 1 2005-2009 Mustang Supercharger Kit (part #421102) to a Phase 2 system. The resulting power at the flywheel is 550 hp / 500 lb-ft. This is a 75 horsepower increase over the Phase 1 system (at 475 hp /435 lb-ft).

    This Dual Belt FEAD Phase 1-2 2005-2009 Mustang Supercharger Upgrade is part of a new line of ROUSH Mustang supercharger kits that allow for easy upgrading. The goal this "Phased" line is to reuse as many components as possible when customers want to upgrade from one phase to the next. This upgrade kit includes the additional components necessary to go from a Dual Belt Phase 1 kit for 2005-2009 Mustangs to a Phase 2 system.

    * This product requires recalibration of the vehicle’s PCM. ROUSH calibration is to be downloaded via the ROUSH RDT Software and ROUSH Voucher code (in conjunction with an approved “pass-thru” device or Ford IDS tool). Instructions on how to download the software, as well as a product-specific voucher code, are included with the packaging. If you do not have access to an approved "pass-thru" device, you have the option to physically send your PCM back to ROUSH to be flashed. This will be an additional $100.00 fee (plus shipping to the ROUSH facility). ROUSH will flash your PCM the same day we receive it, and send it back via overnight shipping at no additional cost. If you have any questions regarding the ROUSH recalibration process, or need to send your PCM to us, please speak to a representative at 800-59-ROUSH.

    The Dual Belt FEAD Phase 1-2 2005-2009 Mustang Supercharger Upgrade kit includes the following components:

    • "Spider" crank pulley (8 rib x 183mm)
    • GT500 Fuel system Upgrade
    • Special ROUSH Phase 2 calibration


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