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Revmax Signature Series 850 Transmission Package | 07.5-23 6.7L Cummins


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These units are built to the most stringent tolerances by one expert technician from beginning to end, and each unit is signed by the technician when finished. This unit is rated at 850HP and has undergone over a year of rigorous R&D and performance testing. We don’t just say we have pride in our transmission, we literally put our name on it.  This transmission features the following:

** Trucks with tires that are larger than 35″ will not be covered under warranty unless proof of a differential gear change is provided **


Disassembly Process and Cleaning

  • Complete disassembly of the entire transmission, all wearable “soft parts” are discarded.
  • Casing and housings are washed in our 190-degree hot wash tank.
  • Hard parts are thoroughly inspected and then either discarded or hand washed
  • Casing is thoroughly checked for any cracks or damage



  • Revmax billet STEEL inner input clutch housing
  • Revmax Signature 850 Anodized Outer Billet Input Clutch Housing
  • Billet Direct Oiling Input Shaft (patent pending)
  • 68RFE 300M One Piece FORGED Billet Overdrive Clutch Hub and Shaft Assembly
  • Billet SFI flexplate
  • Billet RevMax Center Support and 4th Clutch Housing w\ 5 Clutches
  • Revmax zeroflex 6061 billet valve body channel plate with filter cutout
  • RevMax leak free bonded separator plate that is 2.5x thicker than OEM.
  • Billet Stage 5 Triple Disc 68RFE Torque Converter
  • 5 clutch 2nd clutch with GPZ clutches and kolene steels, custom machined pressure plate.
  • Billet 2nd clutch piston assembly
  • 5 clutch 4th Clutch pack with GPZ clutches
  • Billet 2nd Clutch Piston Assembly
  • Billet 4th Clutch Piston Assembly
  • High Energy Low /Reverse Clutches
  • High Energy Reverse Clutches
  • Revmax High-Pressure Pump
  • Revmax High-Pressure Valve Body
  • Brand New Internal Solenoid Pack
  • Custom calibrated Revmax performance valve body, fully tested on our computerized valve body dyno
  • Extra deep 4.5-quart additional cast aluminum pan with drain plug
  • Billet Filter Screw
  • 2-year unlimited mileage warranty


The 2019 68rfe requires a PI Curve Relearn that must be done along with the quick learn before driving the vehicle

Additional information

Weight 350 lbs


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