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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.

Individual Parts

Results 1 - 18 of 18

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

Part Number: TRG-4L80E-HD2

4.63 out of 5 stars ( 57 )

Estimated Ship Date: Today

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

Part Number: SOX-HP-4L80E-01

Not Yet Reviewed

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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 ( 3 )

Estimated Ship Date: Today

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Automatic Transmission Shift Set, Performance, with EPC Boost Pressure Relief Valve System, for 4L80E, 4L85E, Kit

Part Number: TRG-SK4L80E

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

Part Number: TRG-4L60E-HD2

4.75 out of 5 stars ( 59 )

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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: Today

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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: Today

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

Part Number: TRG-4L60E-PRO

5.0 out of 5 stars ( 4 )

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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: Today

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Transmission Upgrade Kit, Trans-Scat, Chevy, GMC, Bentley, Hummer, Jaguar, Rolls Royce, 4L80E, Each

Part Number: TCI-276005

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered today

Conversion Kit, 1968-70 Chevelle 4-Spd Automatic Reverse Valve Body Factory Shifter Conversion Kit 4L80E, 4L85E

Part Number: SIW-SC2252-RVB

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Transmission Upgrade Kit, Trans-Scat, Chevy, GMC, Bentley, Hummer, Jaguar, Rolls Royce, 4L80E, Each

Part Number: TCI-276000

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Conversion Kit, 1968-69 Impala 4-Spd Automatic Reverse Valve Body Factory Shifter Conversion Kit 4L80E, 4L85E

Part Number: SIW-SC225-RVB

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Conversion Kit, 1971-72 Chevelle 4-Spd Automatic Reverse Valve Body Factory Shifter Conversion Kit 4L80E, 4L85E

Part Number: SIW-SC2253-RVB

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

ATP Automatic Transmission Upgrade Kit

Part Number: ATP-SK3

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

VALVE BODY KIT

Part Number: PIO-765003

Not Yet Reviewed

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VALVE BODY KIT

Part Number: PIO-765023

Not Yet Reviewed

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ATP Automatic Transmission Upgrade Kit

Part Number: ATP-SK2

Not Yet Reviewed

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