68RFE Stage 4 Transmission

The Randy's Transmissions 68RFE Stage 4 is engineered to meet the demands of high-performance driving and is rated for over 1,000 HP, making it suitable for both track use and demanding job requirements. This transmission is built to handle extreme power levels while ensuring durability and reliability for heavy-duty applications. The build specifications for this stage 4 transmission are extensive, featuring a Babymaker 1000 Valve Body with a billet channel plate, Transgo SSV valves, billet accumulators, and a reinforced cover. It also includes an OE Mopar Solenoid Block for precise shifting, and Randy's in-house crafted triple disc billet converter for maximum performance. Components like the Sonnax Input Shaft, Randy's XHD Input Drum, and a 2C power-packed billet piston enhance strength and power handling. Additional upgrades include 14 low/reverse clutches for increased holding power, bonded pistons, a low/reverse roller sprag, a tig-welded low reverse planet, Randy's billet 4th clutch hub, and a custom-machined steel center support with 5 4C clutches and a billet piston. The build also incorporates new Sonnax bearings and specified bushings, OE Mopar line pressure and speed sensors, a steel spin-on filter adapter with a new spin-on filter, and a new push-on filter, along with Randy's HD injection moulded aluminum deep pan for extra capacity and cooling. The company highlights its American-made excellence, commitment to durability, and extensive real-world testing and development since 2008. The transmission comes with a 1-year, 12,000-mile warranty, offering peace of mind. For tuning, specific parameters are provided: line pressure set to 225 PSI above 30% throttle angle, 100 PSI resting pressure, no lockup until 4th gear, low/reverse sprag holdout, and for 2019+ models, the underdrive pulse test must be turned off. This transmission is designed for 2007.5-2018 Dodge/Ram 6.7L Cummins models. A separate Stage 4 transmission is available for 2019+ models. A refundable core charge of $2500 applies. Financing options through Affirm are available for online purchases.