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...

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.

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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 )

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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 )

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TransGo Automatic Transmission Reprogramming Kits AOD-HP

Shift Kit, Automatic Type, Ford, AOD, Hi-Rev, Muscle Car Shifts, Each

Part Number: TRG-AOD-HP

4.29 out of 5 stars ( 17 )

Estimated Ship Date: Tomorrow

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TransGo Automatic Transmission Reprogramming Kits RFE-7B-HP

Reprogramming Kit, Auto, Dodge, Jeep, Chrysler, Kit

Part Number: TRG-RFE-7B-HP

Not Yet Reviewed

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TransGo Automatic Transmission Reprogramming Kits for 2006-2007 B9 TRIBECA, 2005-2007 LEGACY, 2008 OUTBACK - 5EAT-HD2

Reprogramming Kit, Auto Trans, Subaru, Kit

Part Number: TRG-5EAT-HD2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

B&M Shift Improver Kits 30262

Shift Improver, Chevy, TH350, Each

Part Number: BMM-30262

4.76 out of 5 stars ( 29 )

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TransGo Automatic Transmission Reprogramming Kits 200-4R-HD2-A

Automatic Transmission Shift Kits, THM 200-4R, 1981-90, Kit

Part Number: TRG-200-4R-HD2-A

Not Yet Reviewed

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TransGo Automatic Transmission Reprogramming Kits TFRE-PRO

Automatic Transmission Shift Kit, Reprogramming, 46RE, 47RE, 48RE, Kit

Part Number: TRG-TFRE-PRO

Not Yet Reviewed

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B&M Shift Improver Kits 70360

Transmission Upgrade Kit, Shift Improver, GM, 4L60E, Each

Part Number: BMM-70360

4.83 out of 5 stars ( 12 )

Estimated Ship Date: Tomorrow

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TransGo Automatic Transmission Reprogramming Kits 5R55W-HD2

Shift Kit, Reprogramming Kit, Ford, 5R55S, 5R55W, Kit

Part Number: TRG-5R55W-HD2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

B&M Shift Improver Kits 70239

Transmission Upgrade Kit, Shift Improver, GM, 700R4, 4L60, Each

Part Number: BMM-70239

4.65 out of 5 stars ( 20 )

Estimated Ship Date: Tomorrow

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B&M Shift Improver Kits 20260

Transmission Upgrade Kit, Shift Improver, GM, TH400, TH375, TH475, Each

Part Number: BMM-20260

4.82 out of 5 stars ( 17 )

Estimated Ship Date: Tomorrow

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TransGo High-Pressure Tuneless Kits for 2019-2024 RAM 3500, RAM 2500, 2023 RAM 1500 - RFE-HP-19UP

Shift Kit, Automatic Type, Ram, RFE, Forward/Standard Shift Pattern, Kit

Part Number: TRG-RFE-HP-19UP

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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B&M Shift Improver Kits 35265

Transmission Upgrade Kit, Shift Improver, GM, 200-4R, Each

Part Number: BMM-35265

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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B&M Shift Improver Kits 10225

Shift Improver, Chrysler, 727, A-904, Each

Part Number: BMM-10225

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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B&M Shift Improver Kits 40262

Transmission Upgrade Kit, Shift Improver, Ford, C-6, Each

Part Number: BMM-40262

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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B&M Shift Improver Kits 10226

Shift Improver, Chrysler, 727, A-904, Each

Part Number: BMM-10226

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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B&M Shift Improver Kits 20261

Transmission Upgrade Kit, Shift Improver, GM, TH400, TH475, Each

Part Number: BMM-20261

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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B&M Shift Improver Kits 50260

Transmission Upgrade Kit, Shift Improver, Ford, C-4, Each

Part Number: BMM-50260

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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B&M Shift Improver Kits 50262

Transmission Upgrade Kit, Shift Improver, Ford, C-4, Each

Part Number: BMM-50262

2.33 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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