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Automatic Transmission Shift Kits
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Automatic Transmission Shift Kits

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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 307 Items.

Individual Parts

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Results 1 - 25 of 244

TransGo Performance Shift Kits 4L80E-HD2

TransGo Performance Shift Kits 4L80E-HD2

TransGo Performance Shift Kits 4L80E-HD2

Shift Kit, Automatic Type, GM, 4L80E, 4L85E, Forward/Standard Shift Pattern, Each

Part Number: TRG-4L80E-HD2

4.63 out of 5 stars ( 56 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Sonnax Zip Kits 6L45-6L90-ZIP

Sonnax Zip Kits 6L45-6L90-ZIP

Sonnax Zip Kits 6L45-6L90-ZIP

Shift Kit, Zip Kit, Chevy, Kit

Part Number: SOX-6L45-6L90ZIP

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits 4L60EHD2

TransGo Performance Shift Kits 4L60EHD2

TransGo Performance Shift Kits 4L60EHD2

Shift Kit, Automatic Type, Includes .500 in. Boost Valve, GM, 4L60E, Each

Part Number: TRG-4L60E-HD2

4.75 out of 5 stars ( 59 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Sonnax Shift Improver Performance Packs HP-4L60E-01

Sonnax Shift Improver Performance Packs HP-4L60E-01

Sonnax Shift Improver Performance Packs HP-4L60E-01

Shift Improver Performance Pack, 4L60E, 4L65E, 4L70E, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: SOX-HP-4L60E-01

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Sonnax Shift Improver Performance Packs HP-4L80E-01

Sonnax Shift Improver Performance Packs HP-4L80E-01

Sonnax Shift Improver Performance Packs HP-4L80E-01

Automatic Transmission Valve Body, GM 4L80-E, 4L85-E, Performance, Each

Part Number: SOX-HP-4L80E-01

Not Yet Reviewed

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits SK 6L80

TransGo Performance Shift Kits SK 6L80

TransGo Performance Shift Kits SK 6L80

Automatic Shift Kit, 6L80, 6L80E, 6L90, 6L90E, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Kit

Part Number: TRG-SK6L80

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Automatic Transmission Reprogramming Kits 6L80-TOW&PRO

TransGo Automatic Transmission Reprogramming Kits 6L80-TOW&PRO

TransGo Automatic Transmission Reprogramming Kits 6L80-TOW&PRO

Automatic Transmission Shift Kits, Reprogramming Kit, Performance/Tow/Haul, GM, 6L45, 6L50, 6L80, 6L90, Kit

Part Number: TRG-6L80-TOW-PRO

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits 350-1&2

TransGo Performance Shift Kits 350-1&2

TransGo Performance Shift Kits 350-1&2

Shift Kit, Performance, Buick, Chevy, Oldsmobile, Pontiac, GMC, TH350, 1969-81, Kit

Part Number: TRG-350-1-2

4.41 out of 5 stars ( 56 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits 400-PRO

TransGo Performance Shift Kits 400-PRO

TransGo Performance Shift Kits 400-PRO

Shift Kit, Performance, Gaskets, Pro-Race, Heavy Duty, Super Show Off, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, TH400, Kit

Part Number: TRG-400-PRO

4.95 out of 5 stars ( 21 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits 400-1&2

TransGo Performance Shift Kits 400-1&2

TransGo Performance Shift Kits 400-1&2

Shift Kit, Performance, Buick, Chevy, Oldsmobile, Pontiac, GMC, TH400, 1965-95, Kit

Part Number: TRG-400-1-2

4.76 out of 5 stars ( 21 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits 4L60E-3

TransGo Performance Shift Kits 4L60E-3

TransGo Performance Shift Kits 4L60E-3

Shift Kit, Stick Type, GM, 4L60E 1993-2005, Competition, Off-Road, Pro-Street, Each

Part Number: TRG-4L60E-3

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

B&M Shift Improver Kits 20260

B&M Shift Improver Kits 20260

B&M Shift Improver Kits 20260

Transmission Upgrade Kit, Shift Improver, GM, TH400, TH375, M40, Each

Part Number: BMM-20260

4.81 out of 5 stars ( 16 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Automatic Transmission Shift Kits 4L60E-PRO

TransGo Automatic Transmission Shift Kits 4L60E-PRO

TransGo Automatic Transmission Shift Kits 4L60E-PRO

Performance Shift Kit, 4L60E, 4L65E, 4L70E, Kit

Part Number: TRG-4L60E-PRO

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

B&M Shift Improver Kits 30262

B&M Shift Improver Kits 30262

B&M Shift Improver Kits 30262

Shift Improver, Chevy, TH350, Each

Part Number: BMM-30262

4.72 out of 5 stars ( 25 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits SK 4L60E

TransGo Performance Shift Kits SK 4L60E

TransGo Performance Shift Kits SK 4L60E

Shift Kit, Shift Improvement, ISO-CON Valve, GM, 4L60E, 4L65E, 4L70E, 4L75E, Each

Part Number: TRG-SK4L60E

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits 700-2&3

TransGo Performance Shift Kits 700-2&3

TransGo Performance Shift Kits 700-2&3

Shift Kit, Automatic, Full Manual, GM, 700R4, Towing, Competition, Pro Sreet, Each

Part Number: TRG-700-2-3

4.32 out of 5 stars ( 25 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

BD Diesel Valve Body Electronics Upgrade Kits for 2000-2007 RAM 2500, RAM 3500 - 1060605

BD Diesel Valve Body Electronics Upgrade Kits for 2000-2007 RAM 2500, RAM 3500 - 1060605

BD Diesel Valve Body Electronics Upgrade Kits for 2000-2007 RAM 2500, RAM 3500 - 1060605

Valve Body Electronics Upgrade Kit, 47RE, 48RE, Dodge, Kit

Part Number: BDD-1060605

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Sonnax Zip Kits 6R140-ZIP

Sonnax Zip Kits 6R140-ZIP

Sonnax Zip Kits 6R140-ZIP

Automatic Transmission Shift Kits, Zip Kit, with Boost Valve, O-Ring Plugs, Accumulator Pistons, Spring, Sleeves, Ford, 6R140, Kit

Part Number: SOX-6R140-ZIP

Not Yet Reviewed

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

B&M Transpak Kits 30228

B&M Transpak Kits 30228

B&M Transpak Kits 30228

Transmission Upgrade Kit, Transpak, GM, TH350, TH375B, M38, Each

Part Number: BMM-30228

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits TF-2

TransGo Performance Shift Kits TF-2

TransGo Performance Shift Kits TF-2

Shift Kit, Automatic Type, Chrysler, Torqueflite, 3 Speed, Full Race Shifts, Each

Part Number: TRG-TF-2

4.77 out of 5 stars ( 26 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits AODE-HD2

TransGo Performance Shift Kits AODE-HD2

TransGo Performance Shift Kits AODE-HD2

Shift Kit, Automatic Type, Ford, AODE, 4R70W, Towing, Competition, Heavy Duty, Pro-Street, Each

Part Number: TRG-AODE-HD2

4.71 out of 5 stars ( 21 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits 67-1&2

TransGo Performance Shift Kits 67-1&2

TransGo Performance Shift Kits 67-1&2

Shift Kit, Automatic Type, Ford, C-6, Towing, Competition, Heavy Duty, Gas Engines, Each

Part Number: TRG-67-1-2

4.82 out of 5 stars ( 17 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Sonnax Zip Kits 10L80-G1-10R80-ZIP

Sonnax Zip Kits 10L80-G1-10R80-ZIP

Sonnax Zip Kits 10L80-G1-10R80-ZIP

ZIP KIT

Part Number: SOX-S0002

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Automatic Transmission Reprogramming Kits 4R100-HD2

TransGo Automatic Transmission Reprogramming Kits 4R100-HD2

TransGo Automatic Transmission Reprogramming Kits 4R100-HD2

Shift Kit, Tugger Type, Ford, E4OD, 4R100, Towing, Off-Road, Heavy Duty, Each

Part Number: TRG-4R100-HD2

4.95 out of 5 stars ( 20 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

TransGo Performance Shift Kits 4L80E-3

TransGo Performance Shift Kits 4L80E-3

TransGo Performance Shift Kits 4L80E-3

Shift Kit, Stick Type, Full Manual, GM, 4L80E, Competition, Off-Road, Pro-Street, Each

Part Number: TRG-4L80E-3

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

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