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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B&M Shift Improver Kits 30262

Shift Improver, Chevy, TH350, Each

Part Number: BMM-30262

4.73 out of 5 stars ( 26 )

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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 )

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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 )

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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 )

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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 )

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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 )

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B&M Shift Improver Kits 20261

Transmission Upgrade Kit, Shift Improver, GM, TH400, 3L80, Each

Part Number: BMM-20261

5.0 out of 5 stars ( 5 )

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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 )

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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 )

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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 )

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B&M Transpak Kits 70235

Transmission Upgrade Kit, Transpak, GM, 700R4, 4L60, Each

Part Number: BMM-70235

4.88 out of 5 stars ( 8 )

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B&M Transpak Kits 10228

Shift Kit, Transpak, Chrysler, 727, A-904, Each

Part Number: BMM-10228

5.0 out of 5 stars ( 1 )

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B&M Transpak Kits 20228

Transmission Upgrade Kit, Transpak, GM, TH400, TH375, M40, Each

Part Number: BMM-20228

3.67 out of 5 stars ( 3 )

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B&M Transpak Kits 40227

Transmission Upgrade Kit, Transpak, Ford, AOD, Each

Part Number: BMM-40227

5.0 out of 5 stars ( 1 )

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B&M Transpak Kits 40228

Transmission Upgrade Kit, Transpak, Ford, C-6, Each

Part Number: BMM-40228

5.0 out of 5 stars ( 1 )

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B&M Transpak Kits 30235

Transmission Upgrade Kit, Transpak, GM, TH350C, Each

Part Number: BMM-30235

Not Yet Reviewed

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B&M Transpak Kits 50229

Transmission Upgrade Kit, Transpak, Ford, C-4, Each

Part Number: BMM-50229

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Pioneer Automotive Automatic Transmission Shift Kits 765009

Automatic Transmission Shift Kit, Exact-Fit, Mid-70s/80s Ford, Mercury, Kit

Part Number: PIO-765009

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

TransGo Performance Shift Kits 45-01

Shift Kit, Automatic Type, Ford 1965-66, C-4, Towing, Competition, Heavy Duty, Each

Part Number: TRG-45-01

5.0 out of 5 stars ( 15 )

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TransGo Performance Shift Kits 47-2

Shift Kit, Automatic Type, Ford 1967-69, C-4, Towing, Competition, Heavy Duty, Each

Part Number: TRG-47-2

4.5 out of 5 stars ( 10 )

Estimated Ship Date: Today

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TransGo Performance Shift Kits 47-1

Shift Kit, Automatic Type, Ford 1967-69, C-4, Towing, Street, Heavy Duty, Each

Part Number: TRG-47-1

4.67 out of 5 stars ( 3 )

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TransGo Automatic Transmission Valve Body Repair Kits SK C5

Automatic Transmission Shift Kits, Valve Body Repair, C4, C5, Kit

Part Number: TRG-SKC5

Not Yet Reviewed

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

TransGo Automatic Transmission Valve Body Repair Kits SK 4-71

Automatic Transmission Shift Kits, Valve Body Repair, C4, Kit

Part Number: TRG-SK4-71

Not Yet Reviewed

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

Pioneer Automotive Automatic Transmission Shift Kits 765003

VALVE BODY KIT

Part Number: PIO-765003

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

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