E4OD 4R100 89-04 Heavy Duty Truck/Van TRANSGO Shift Kit category_scratch-and-dent-used-parts Higher boost in the PSD

Higher boost in the PSD can stretch the limits of a saturated set of factory boots and could blow your boots right off

Type: Push-Pull Style

Let us guess — the rear window barely crawls up

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What’s Included in the Kit

E4OD 4R100 89-04 Heavy Duty Truck/Van TRANSGO Shift Kit category_scratch-and-dent-used-parts Higher boost in the PSDTransGo 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