Tier One's Stage 2 68RFE Transmission Features:
- Built 68RFE Transmission designed for aggressive tuning, turbo upgrades, heavy towing, sled pull, and drag strip use
- Handles up to 750 horsepower from powerful Cummins tuning, upgraded turbos, larger injectors, and bolt-on mods
- Complete, drop-in transmission for your 2007.5-2018 Ram 6.7L Cummins
- Includes a billet triple-disc torque converter, billet input shaft, billet input clutch drum, billet 4C retainer, billet 2C piston, rollerized sprag, billet high-pressure valve body, deep transmission pan, & performance rebuild kit
- Fixes common 68RFE problems while letting you stack on serious power in aggressive towing, off-roading, or racing applications
- Black finish for a great look under your truck
- Valve bodies are both leak-checked and dyno-tested prior to install
- All transmissions are thoroughly checked on our in-house transmission dyno
- Backed by a 2-year, unlimited mileage warranty
- Requires additional core charge and freight shipping
- If you have questions or want a custom 68RFE build, contact Tier One or call 602-399-5484!
- Tier One's most popular 68RFE transmission option
Built 68RFE Transmission that Handles Huge Horsepower and Extremely Aggressive Applications on the Road, in the Dirt, or at the Track
It's not hard to get the 6.7L Cummins under the hood of your awesome 2007.5-2018 Ram 2500 or 3500 churning out a ton more horsepower and torque with the right combination of tuning, turbo upgrades, injectors, and other bolt-on performance parts. However, the stock 68RFE transmission helping to power your truck already struggles to handle stock power. Tier One's Stage 2 68RFE transmission is our most popular 68RFE transmission option and comes with all of the upgraded components necessary to let your 6.7L Cummins Ram hit huge levels of power and dominate your competition on the street, at the track, or off the beaten path. The Tier One Stage 2 built 68RFE transmission can hold up to 750 horsepower, making it capable of holding power from all put the most aggressive tuning and performance upgrades. On top of improved power handling, we here at Tier One also include all the hardware and components necessary to fix common issues with the 68RFE so that your truck gets clean shifting and reliable operation, even when it's making massive power and torque. The Stage 2 68RFE transmission is the perfect choice for 6.7L Cummins Rams that are pushing out serious power while also towing heavy, rocking big tires for off-roading, hitting the sled pulls, or even killing it at the Run-What-You-Brung drag nights at your local track. The Stage 2 comes with both high-strength internal components, extremely strong external parts, and new replacement items that all work together to ensure your truck can safely make a ton of power and use that power whenever and wherever you need.
Includes a Full Suite of Billet Components and Performance Transmission Parts to Reliably Hold Big-Time Horsepower
The Tier One Stage 2 Transmissions are built with care with technicians that have decades of combined experience in the performance transmission market. Each Stage 2 68RFE starts its life as factory 68RFE core that's fully disassembled, cleaned, and thoroughly inspected for damage before being repurposed for a Stage 2 68RFE transmission build. We include a SunCoast billet triple-disc torque converter that's resistant to warp and whose three discs provide a ton of surface area for holding power and load. Replacing the stock input shaft is a Sonnax billet input shaft made out of 300M steel that can handle and hold huge power in extremely aggressive applications. The Stage 2 68RFE transmission comes standard with a billet steel input clutch drum that solidly holds the clutch packs in place and resists warping and shifting even under extreme levels of power and torque. Tier One includes a billet 4C spring retainer that helps prevent gear walkout and premature failures at elevated levels of power. The Stage 2 comes with a billet steel 2C piston that handles the strain of extra horsepower better than stock. Each Tier One Stage 2 transmission includes a rollerized sprag that handles high-powered lockups and aggressive shifting much more effectively than stock. The heart of the Stage 2 68RFE is its Tier One Billet High Pressure Valve Body that features a billet aluminum construction that resists flex under load and utilizes deep worm tracks for increased fluid flow and cooling. The valve body also features a bonded separator plate that better seals the work tracks and prevents cross-leaks. Each transmission comes with a deep transmission pan that holds more fluid than stock to improve cooling. The Stage 2 transmission is also fitted with a high-performance rebuild kit that includes new wearable parts with 14 overdrive clutches, 4 2C clutches, and 4 4C clutches. Tier One throws in a new OEM solenoid pack and OEM line sensor to ensure proper operation. Each Stage 2 68RFE transmission is topped off with new seals and gaskets before being air-checked for leaks.
Fully Overhauled 68FRE Transmission for Excellent Reliability
During our build of your 68RFE Stage 2 transmission, we here at Tier One go over every millimeter of its internal components to guarantee excellent function and reliability. All parts are disassembled and cleaned from our OEM cores to ensure your new 68RFE transmission is free from contaminants and other debris. We carefully inspect your transmission's planetary gear train for damage before fully speccing all bearings and washers for endplay. The original transmission pump is flat-sanded, checked for proper clearances, and vacuum-tested. The valve body is likewise flat-sanded and its solenoids thoroughly inspected for better than OEM function, and we replace the OEM accumulator plate to avoid potential codes and issues down the road. Each transmission is also fitted with a TIG-welded planetary pinions. The performance rebuild kit includes new Borg Warner clutches, seals, gaskets, and sealing rings to replace all the wearable parts of the transmission before it's installed on your Ram 2500 or Ram 3500.
Thorough Testing of the Valve Body and Entire Transmission Before Shipping
We here at Tier One take pride in every built 68RFE transmission we manufacture for the Ram 6.7L Cummins trucks. To make sure that you get a transmission that's as tough as your truck, Tier One puts both the valve bodies and the entire assembled transmission through rigorous testing to ensure you get the reliability you need for heavy towing and hauling applications with your 6.7L Cummins diesel. Before the assembly of the valve body, it goes through flat-sanding vacuum-testing. All valve body solenoids are carefully tested to ensure flawless operation. After assembly of the valve body, it goes through rigorous dyno-testing to ensure proper fluid flow, line pressures, and solenoid operation. After final assembly of the transmission itself, we put it through a complete air-check to find potential leaks before putting the entire transmission on our in-house transmission dyno to ensure proper operation, performance, and power-holding.
Specifications:
- Vehicle fitment: 2007.5-2018 Ram 2500 or 3500 6.7L Cummins
- Transmission Type: Chrysler 68RFE
- Power Rating: up to 750hp
- Torque Converter: Billet triple-disc
- Flex Plate: OEM
- Input Shaft: Sonnax 300M Billet Steel
- Transmission Pan: deep pan with increased capacity
- Valve body: Billet High-Pressure
- Intermediate shaft: OEM
- Clutches: Borg Warner. Additional Overdrive, 2C, & 4C clutch packs
- Clutch Drum: Billet Steel
- Output shaft: OEM
- Geartrain: OEM
- Spring Retainers: Billet 4C/OEM
- Pistons: Billet 2C/OEM
- Sprag: Rollerized
- Clutch Hub: OEM
For 2007.5-2018 Ram 6.7L Cummins only: this transmission will only fit 2007.5-2018 Ram 6.7L Cummins 2500 & 3500 trucks with 68RFE transmissions. If you have a newer 6.7L Cummins Ram, please check out our
2019-2024 Ram 6.7L Cummins Stage 2 68RFE Transmission. If you have a 2013-2024 Ram 6.7L Cummins 3500, 4500, or 5500 with an Aisin AS69RC transmission, please see our
2013-2024 Ram 6.7L Cummins Stage 2 AS69RC transmission.
2007 Ram Model Year Note: this transmission is only meant for 6.7L Cummins trucks built after July 2007. They will not fit early 2007 models with 5.9L Cummins diesels. If you have an early 2007 Ram 2500 or Ram 3500 with a 5.9L Cummins, check out our
48RE Transmission options.
Flex Plate strongly recommended: if your truck is pushing beyond 600 crankshaft horsepower, Tier One strongly recommends using a billet flex plate in conjunction with this transmission. Check out our selection of
2007.5-2018 Ram 6.7L Cummins Flex Plates!
2-Year, Unlimited Mile Warranty: each Tier One built transmission comes backed by a 2-year, unlimited mile warranty. Please see our
Warranty Terms and Conditions here.
Optional Upgrades: the following upgrades are optional, but are available if you’re looking for even better reliability and power-holding:
- Billet OD Clutch Hub: offers increased strength over the two-piece clutch hub to improve reliability at high power levels
- Bypass upgrade: deletes the stock thermal control valve to improve fluid flow through your transmission for better cooling.
- Auxiliary Cooler Kit: adds a secondary transmission cooler to your truck to further improve cooling during heavy towing and racing applications.
Tuning Notes:
- This transmission can be ran with factory tuning
- For smooth shifts, please do not use max idle transmission line pressures. Line pressures should increase smoothly with throttle input until 225psi is reached before 1/4 throttle
- We strongly recommend keeping the factory lockup sequence to prevent harsh shifting and broken shafts
- Low/reverse sprag holdout is required on this transmission to prevent major gear train damage
Recommended gearing: the following gearing is recommended for the following tire sizes, and is required for Tier One to honor your warranty:
- 35" Tire: 4.10 gears or higher
- 37" Tire: 4.30 gears or higher
- +38" Tire: 4.56 gears or higher
Transmission Break-in: in order to maintain your warranty, this transmission requires a 300-mile break-in and a 100-mile relearn. Please check out
Tier One's Break-In Procedure & Policy here.
Core charge: this transmission includes a $2000.00 core charge that will be refunded upon receipt of your stock transmission. Tier One can also defer your core charge if you create an account our site and save your credit/debit card information. Your card will only be charged if your core is not returned or if there's damage to your core's critical components. For more information on our deferred core charge program, check out our
Deferred Core Terms and Conditions. If you you select "deferred core" from our drop-down, but fail to create an account and save your credit card information, you will be charged a $5.99 deferred core fee. For information on sending in your stock core or any other questions you may have, please give us a call directly at 602-399-5484!
Freight Shipping: this transmission ships via freight. Please carefully inspect your transmission before signing your Bill of Lading. If your transmission arrives damaged, please call us directly at 602-399-5484.
Shopping CartItems0
