Your Super Duty does it all—job sites, weekend towing, daily duty. Our Monster E4OD, 4R100, 5R110 and 6R140 builds add clutch capacity, cooler temps, and confident lock-up so your F-250 stays in the fight longer.
F-250s see plows, campers, gear, and bigger tires. We target heat, slip, and hydraulic control with upgraded frictions/steels, purpose-tuned valve bodies, and torque converters matched to how you actually use the truck—so shifts are cleaner and temps stay in check.
For OBS F-250 owners, this is the proven fix for overdrive clutch burn and valve body wear. Built for reliable tow/haul duty with crisp, predictable shifts.
Perfect for 7.3L Power Stroke and V10 gas trucks. More clutch area and smarter line-rise help the 4R100 keep its cool under heavy trailers and hills.
Built for 6.0L/6.4L Power Stroke torque. We tackle converter distress and thermal fade with better hydraulics, cooling, and added clutch count where it matters.
For 6.7L diesel and 6.2L gas F-250s. Our 6R140 updates focus on clutch durability, lock-up control, and thermal stability for long grades and heavy loads.
| Transmission | Engine(s) | Typical Model Years |
|---|---|---|
| E4OD | 7.3L IDI, 7.5L V8, 5.8L/5.0L (Gas) | ~1989 – 1997 |
| 4R100 | 7.3L Power Stroke Diesel; 5.4L/6.8L (Gas) | ~1998 – 2003 |
| 5R110 | 6.0L & 6.4L Power Stroke Diesel | ~2003.5 – 2010 |
| 6R140 | 6.7L Power Stroke Diesel; 6.2L (Gas) | ~2011 – 2019 |
Built for real workloads, validated on the dyno, and backed by people who know Super Duty drivetrains.
Capacity gains and smarter hydraulics keep slip down and fluid happy—key for plows, campers, and long grades.
Line-rise and timing are calibrated for control, so shifts are firm without being harsh.
From tow-friendly single-disc to multi-disc performance, we set stall and lock-up for your combo.
Every unit completes a multi-point test cycle before it ships—install with confidence.
Talk to specialists who build Ford transmissions every day—get the right spec the first time.
Streamlined logistics and a straightforward core return get your F-250 back to work sooner.
Answers to the most common questions we hear from Super Duty owners.
Plan on clearing adaptives and completing a relearn drive cycle—especially on 5R110 and 6R140. It helps the TCM match pressure and timing to the fresh unit.
Yes, it can. Recalibrate the speedometer and strategy after tire/gear changes. Use our Speedometer Calculator to get baseline numbers.
Use the OEM-specified ATF for your unit (e.g., Mercon V/SP/LV as applicable). Fresh, correct fluid plus adequate cooling are critical for longevity.
No—tow ratings are set by the manufacturer. Our builds improve durability and shift quality under load, so your F-250 performs more consistently at its rated capacity.