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Automatic Transmission Shift Kits
Instead of replacing your automatic transmission’s whole valve body, you can get better performance out of your stock valve body with a transmission shift kit....
Instead of replacing your automatic transmission’s whole valve body, you can get better performance out of your stock valve body with a transmission shift kit. Different manufacturers use different components and techniques, but they all modify the way transmission fluid is routed through the valve body. Some kits are made for racing and performance driving, while others are for towing and heavy-duty hauling. Whatever your application demands, Summit Racing Equipment has the shift kit you need.
Top Brands
When it comes to the complexities of your automatic valve body, you want a manufacturer you can trust. Summit...
Instead of replacing your automatic transmission’s whole valve body, you can get better performance out of your stock valve body with a transmission shift kit. Different manufacturers use different components and techniques, but they all modify the way transmission fluid is routed through the valve body. Some kits are made for racing and performance driving, while others are for towing and heavy-duty hauling. Whatever your application demands, Summit Racing Equipment has the shift kit you need.
Top Brands
When it comes to the complexities of your automatic valve body, you want a manufacturer you can trust. Summit only carries transmission shift kits from top name brands, including TransGo, TCI Auto, B&M, Sonnax, and Performance Automatic.
Showing In Stock Items. Show All 105 Items.
Shift Kit, Performance, Gaskets, Pro-Race, Heavy Duty, Super Show Off, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, TH400, Kit
Part Number: TRG-400-PRO
Estimated Ship Date: Today
Estimated Ship Date: Today
Automatic Transmission Shift Kit, Gaskets, Jeep, Toyota, Kit
Part Number: TRG-340-HD2
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Filter, Gaskets, for TH350 or TH350C, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Kit
Part Number: ATP-SK1
Not Yet Reviewed
Estimated Ship Date: Mar 11, 2026 if ordered today
Estimated Ship Date: Mar 11, 2026 if ordered today
Transmission Upgrade Kit, AMC, Chrysler, A-904, Each
Part Number: TCI-122600
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Transmission Upgrade Kit, Performance Improver, Buick, Chevy, Oldsmobile, Pontiac, Powerglide, 1967-73, Kit
Part Number: TCI-626300
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Transmission Upgrade Kit, Shift Improver, Chrysler, Dodge, Plymouth, Torqueflite 727, Each
Part Number: TCI-122500
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Upgrade Kit, Performance Improver, Chevy, 700R4, Kit
Part Number: TCI-376500
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Transmission Upgrade Kit, Performance Improver, Ford, Lincoln, Mercury, C-4, Kit
Part Number: TCI-526100
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Transmission Upgrade Kit, Trans-Scat, Chevy, Buick, Oldsmobile, Pontiac, GMC, TH250C, TH350C, Each
Part Number: TCI-326300
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Shift Kit, Automatic Type, GM, 4L80E, 4L85E, Forward/Standard Shift Pattern, Each
Part Number: TRG-4L80E-HD2
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Upgrade Kit, Performance Improver, Ford, E4OD, 4R100, Kit
Part Number: TCI-496500
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Shift Kit, Automatic Type, Includes .500 in. Boost Valve, GM, 4L60E, Each
Part Number: TRG-4L60E-HD2
Estimated Ship Date: Today
Estimated Ship Date: Today
Automatic Transmission Shift Kits, Reprogramming Kit, Performance/Tow/Haul, GM, 6L45, 6L50, 6L80, 6L90, Kit
Part Number: TRG-6L80-TOW-PRO
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Performance, Buick, Chevy, Oldsmobile, Pontiac, GMC, TH350, 1969-81, Kit
Part Number: TRG-350-1-2
Estimated Ship Date: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Upgrade Kit, Shift Improver, GM, TH400, TH375, M40, Each
Part Number: BMM-20260
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Automatic Type, Chrysler, Torqueflite, 3 Speed, Full Race Shifts, Each
Part Number: TRG-TF-2
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Performance, Buick, Chevy, Oldsmobile, Pontiac, GMC, TH400, 1965-95, Kit
Part Number: TRG-400-1-2
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Automatic Type, Ford, C-6, Towing, Competition, Heavy Duty, Gas Engines, Each
Part Number: TRG-67-1-2
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Automatic, Full Manual, GM, 700R4, Towing, Competition, Pro Sreet, Each
Part Number: TRG-700-2-3
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Upgrade Kit, Transpak, GM, TH350, TH375B, M38, Each
Part Number: BMM-30228
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Upgrade Kit, Shift Improver, GM, 700R4, 4L60, Each
Part Number: BMM-70239
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Automatic Type, Ford 1965-66, C-4, Towing, Competition, Heavy Duty, Each
Part Number: TRG-45-01
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Stick Type, GM, 4L60E 1993-2005, Competition, Off-Road, Pro-Street, Each
Part Number: TRG-4L60E-3
Estimated Ship Date: Today
Estimated Ship Date: Today
Shift Kit, Automatic Type, Ford, AOD, Hi-Rev, Muscle Car Shifts, Each
Part Number: TRG-AOD-HP
Estimated Ship Date: Today
Estimated Ship Date: Today
