Ford • 4R100

Quality by Design. Monster by Nature.

RoadReady 4R100 transmission
Starting at$2,699

RoadReady 4R100

  • OEM-spec reman with critical updates for daily use
  • New clutches/steels, bushings, seals & shift solenoids as required
  • Matched lockup converter for stock power levels
  • Warranty: 6 Year • Unlimited Miles
  • Horsepower: Stock
StreetMonster 4R100 transmission with converter
Starting at$3,999

StreetMonster 4R100

  • Recalibration to improve line pressure & clutch holding
  • Upgraded clutch packs & band materials for heavier loads
  • HD lockup converter to reduce slip & heat
  • Warranty: 5 Year • Unlimited Miles
  • Horsepower: 100 over Stock
SportMonster 4R100 transmission with converter
Starting at$5,699

SportMonster 4R100

  • Increased clutch count for big torque
  • Upgraded intermediate/overdrive components for towing abuse
  • Performance converter (multi-disc options available)
  • Warranty: 6 Year • Unlimited Miles
  • Horsepower: 500

Why Choose Monster for YOUR 4R100?

  • Tailored builds (RoadReady → SportMonster) for daily drivers to heavy tow rigs.
  • Converter options matched to 5.4L/6.8L V10 and 7.3L Power Stroke use cases.
  • Updates that address EPC/shift concerns and common diode/clutch failures.
  • Thermal focus: reduced slip, better cooler flow; deep-pan options available.
  • Dyno-tested remans with long-term coverage—drive and tow with confidence.

Which build should I choose for my F-250/F-350?

Daily/light tow → RoadReady. Frequent tow/loaded work truck → StreetMonster. Big torque/tunes or commercial duty → SportMonster.

Is a torque converter included?

Yes—each unit ships with a matched lockup converter (multi-disc options on SportMonster).

What fluid should I run?

Use MERCON V (or your product page’s specified ATF). Always flush/replace cooler & lines at install.

Do I need any relearns after install?

Clear adaptives and perform the PCM relearn/drive cycle for best shift quality.

What are common 4R100 weak points you address?

Diode/overdrive failures, clutch pack wear under heavy tow, and EPC/shift pressure issues—handled via updated components and calibration.

*Axle ratio, tire size, tune, and real-world tow weight affect build choice.