E4OD 4R100 89-04 Heavy Duty Truck/Van TRANSGO Shift Kit

TransGo 4R100-HD2 Tugger Shift Kit | Heavy-Duty Transmission Reprogramming Kit

Upgrade your 4R100 transmission for towing, hauling, and commercial use with the TransGo 4R100-HD2 Tugger Shift Kit. Designed specifically for heavy-duty trucks and vans, this kit improves clutch holding power, enhances lubrication and cooling, and delivers firmer, more controlled shifts under load.

Whether you're towing heavy trailers, running an exhaust brake, or simply looking to improve transmission reliability, the 4R100-HD2 Tugger provides the hydraulic upgrades needed to help your transmission perform in demanding conditions.

Features

• Designed for heavy-duty trucks and vans equipped with the 4R100 transmission
• Increases low clutch holding pressure in 1st gear
• Improves downhill engine braking performance
• Allows high-speed pull-into 1st gear operation
• Compatible with exhaust brake applications
• Firmer, more positive shift feel
• Improves transmission cooling and lubrication
• Increases torque converter feed and oil capacity
• Helps improve transmission durability under heavy loads

Benefits

The TransGo 4R100-HD2 Tugger Shift Kit is an excellent upgrade for work trucks, tow rigs, RVs, and fleet vehicles that demand maximum reliability from their transmission. By improving hydraulic control and oil flow, this kit helps reduce clutch slippage, lower operating temperatures, and extend transmission life while providing the crisp shifts needed for towing and heavy hauling.

Fitment

• Ford 4R100 Automatic Transmission
• Heavy-duty truck and van applications