Reprogramming Kit GM TH200-4R

The TRANSGO Reprogramming Kit GM TH200-4R is designed for builders and mechanics looking to enhance the performance of GM TH200-4R automatic transmissions. This kit is ideal for those restoring classic vehicles, upgrading performance engines, or recalibrating high-mileage transmissions. It addresses the soft-shift characteristics of the TH200-4R, ensuring a more responsive driving experience.

This comprehensive valve body reprogramming kit includes precision-engineered valve bodies, springs, spacers, shims, separator plates, gaskets, and extended hardware. These components work together to modify the internal valve body geometry and spring rates, resulting in reduced shift delays and increased line pressure application. This leads to firmer and faster gear engagement across all ranges, enhancing the overall durability of the transmission.

Technicians and enthusiasts rebuilding TH200-4R transmissions for street rods, restomod trucks, and performance applications will find this kit invaluable. It preserves OEM compatibility while delivering the controlled aggression needed for increased engine output or upgraded driveline components. The kit ensures proper installation without requiring custom machining or external modifications to the transmission case.