Trans Go Performance
E40D, 4R100 Reprogramming Kit (Tugger)
SKU: T09L 4R100-HD2
Description
Part #: 4R100-HD2
The most popular valve body performance kit available for Ford E40D and 4R100 transmissions. The TransGo Tugger Reprogramming Kit prevents downhill clutch burnup and doubles low clutch holding pressure in manual first gear for downhill compression braking.
Fitment
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Specifications
| Brand | Trans Go Performance |
| Part Number | T09L 4R100-HD2 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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