The 6R140 Stock-Plus transmission is built for Power Stroke owners who want factory drivability with increased reliability under load. This unit is designed to correct common OEM weak points while retaining smooth shift quality, making it ideal for daily-driven trucks that tow, haul, and work hard.
Unlike performance-oriented builds, the Tow Maxx focuses on longevity, heat management, and clutch capacity without harsh shifts or race-style behavior. Every transmission is assembled using new OEM and premium replacement components and is backed by a 3-year unlimited mileage warranty.
3-Year Unlimited Mileage Warranty
New OEM Ford valve body and solenoids to address known failure points
New valve body harness
New coated bushings for reduced wear and extended service life
New bearings throughout
OEM rebuild kit
Exedy clutches and steels
New torque converter
New filter
(Stock-plus upgrades while retaining OEM drivability)
5-Clutch Forward Drum(Factory: 2011–2014 = 5 clutches / 2015–2019 = 4 clutches)
5-Clutch Direct Drum(Factory: 2011–2014 = 5 clutches / 2015–2019 = 4 clutches)
9-Clutch Overdrive with Apply Plate (Factory: 7 clutches)
6-Clutch Intermediate (Factory: 5 clutches)
Stock or lightly modified Power Stroke trucks
Daily-driven work trucks
Owners seeking OEM-like shift quality with improved durability
The 6R140 Stock-Plus delivers the reliability your truck needs without changing the way it drives—stronger where it counts, factory where it matters.
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