4R100 Performance Pack, Every 4R100’s Dream Package Sonnax Number HP-4R100-01

$ 98.00

SKU: SX SC-4R100HD (THIS PART IS NOW HP-4R100-01), Categories: , Tags: , ,


HP-4R100-01, was SC-4R100HD. Formally a popular Sure Cure option, this heavy duty kit for the 4R100 units has been even further refined to become the new standard for Performance packs!

Every unit has inherent issues that seem to be seen over time. Every Builder has seen them again and again. We have all cut our teeth on problem transmissions only to come out much wiser and smarter in the end. Well let us now cut our losses beforehand and take care of these known issues before they end back up on our bench repeatable times. Here is some extra insurance.

This new state of the art kit offers an innovative, heavy-duty  calibration for a firmer shift load without sacrificing low-speed drivability. These precision components upgrade the 4R100 for maximum performance and durability by recalibrating pressures and shift accumulation. These much more durable and improved parts provided solutions for known trouble areas in this unit with a combined approach. This is the ultimate fix for your heavy duty 4R100 Transmission.

Benefits include:

  • Recalibrated shift accumulation with greater tuneability

  • Upgraded accumulator valves for greater clutch durability

  • Upgraded pump components to minimize cross-leaking

  • TCC performance and lube

  • Upgraded one piece case bushing

  • SURE LOCK overdrive spiral snap ring

Additional information

Weight 1.5 lbs
Dimensions 8 × 8 × 3 in


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