Check the listing for details. TransGo Valve Body Reprogramming Shift Kit 6L80-TOW&PRO*. Condition: New. Listed at 219.00 USD. Transgo Shift Kit (6L80-TOW&PRO) Transgo Shift Kit (6L80-TOW&PRO) Transgo Shift Kit (6L80-TOW&PRO) TRANSGO SHIFT KITAlso includes Valuable Tech Data This is the same kit that Professional Transmission Rebuilders use Includes all items shown6L80-TOW&PRO_______ A Must for Performance _______ Fits 6L45, 6L50, 6L80, 6L90 2006-2020Drive. Tow. Race.Available now— The first and only 6L80 performance kit for trucks and performance applications.With increased max main line pressure as well as a more aggressive pressure curve, this performance kit includes valve body and pump components calibrated to maintain factory shift feel at light-to-medium throttle with progressively firmer upshifts through WOT.FeaturesQuick, clean, firm shifts with increased holding capacityMaintains factory shift feel at light to medium throttle with progressively firmer upshifts through WOTProduces faster line rise when adding throttlePatent-pending technology reworks the 2-6, 3-5-R and 4-5-6 clutch regulator and boost valves to produce faster and cleaner shifts with increased holding capacity without any bumps, clangs, bangs or software tuningStreet show-off options with HP tuners or EFI Live (Must be used in conjunction with #6L80-TOW&PRO)1-2 & 2-3 hard-throttle tire chirping shiftsSimple computer tuning of shift time tables________________________________________Save a bundle here over the cost from a dealership. Buy with confidence * Check out our feedbackAll of our items listed are in stock and ready to ship We Quick-Ship Every Day !