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Stage4R Transmission Upgrade Kit - GM Allison

Out of stock
As low as $2,350.00

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On Orders Over $20

to Contiguous 48 United States

Have Questions? 714-985-4825

The Stage4R transmission kit is our intermediate-level trans upgrade kit that’s built for drag racing, sled pulling, towing and daily-driving. This kit works well for a stock truck, but was engineered to handle a Duramax engine that's been equipped with multiple high-performance modifications: such as performance tuning, oversize injectors, and/or small nitrous kits.

This kit includes PPE’s triple clutch converter, valve body recalibration kit (recalibration kit does not change shift points, only increases clutch holding power), converter flow valve and upgraded high-friction C1, C2, C3 and C4 clutches.

NOTE: A $200 converter core charge is included in price if bought with converter, reimbursed upon return of good core components to PPE. PPE product finish will vary.

Choose your Application Year and Converter Option

  • 2001-2004 BC Converter - 128034521
  • 2001-2004 BCBS Converter - 128034531
  • 2004.5-2005 BC Converter - 128034522
  • 2004.5-2005 BCBS Converter - 128034532
  • 2006-2010 No Converter - 128034513
  • 2006-2010 BC Converter - 128034523
  • 2006-2010 BCBS Converter - 128034533
  • 2011-2016 No Converter - 128034514
  • 2011-2016 BC Converter - 128034524


  • Billet triple clutch converter: "BC" Billet Cover (standard) "BCBS" Billet Cover Billet Stator (optional)
  • C1, C2, C3, C4 included
  • Valve body recalibration kit, boost valve, pump shim and gaskets
Installation Guide: Coming Soon

Kits vary by quantity, thickness and material based on your specific transmission needs. Call to discuss your transmission project to ensure you get the most from your build.

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