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Transmission & Drivetrain

Performance & Replacement Transmission & Drivetrain Parts

Performance & Replacement Transmission & Drivetrain Parts

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic...

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.

Individual Parts

Results 1 - 25 of 2000 +

Automatic Transmission, TH400 Level 4, Remanufactured, 3 Gears, Deep Pan, Reverse Shift Pattern, SFI 4.1/30.1, Chevrolet, THM400, Each

Part Number: FTI-TH400-4S

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission Package, TH400 level 4, Dipstick & Tube, Cooler Lines, Cooler, FTI ATF Fluid, SST89-0 Racing Billet Stall Converter, Kit

Part Number: FTI-TH400-4K21

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission, Level 4, TH400, Trans-Brake, Chevy Ultrabell, Each

Part Number: FTI-TH400-4UB

4.29 out of 5 stars ( 7 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission, 3-Speed, Ultra-Bell Bellhousing, Reverse Shift Pattern, Full Manual Valve Body, GM, TH400, Each

Part Number: FTI-TH400-45UB

Not Yet Reviewed

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission, Level 3, TH400, Forward Shift, Ultra Bell, Chevy, Each

Part Number: FTI-TH400-3UB

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission, TH400 Level 4, Remanufactured, 3 Gears, Deep Pan, Torque Converter, Chevrolet, THM400, Kit

Part Number: FTI-TH400-4K51

Not Yet Reviewed

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission, Level 4, TH400, Trans-Brake, Chevy, Cut For Ultrabell, Each

Part Number: FTI-TH400-4UBC

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Automatic Transmission, Level 3, TH400, Forward Shift, Cut for Ultra Bell, Chevy, Each

Part Number: FTI-TH400-3UBC

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Automatic Transmission, Level 3, TH400, Reverse Shift, Ultra Bell, Chevy, Each

Part Number: FTI-TH400-3RUB

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Automatic Transmission, 3-Speed, Ultra-Bell Bellhousing, Reverse Shift Pattern, Full Manual Valve Body, ER310 Input Shaft Material, GM, TH400, Each

Part Number: FTI-TH400-5UB

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Automatic Transmission, Level 3, TH400, Reverse Shift, Cut for Ultra Bell, Chevy, Each

Part Number: FTI-TH400-3RUBC

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

GM TH400 RACING Trans, CUT FOR ULTRA BELL,SHORT SHAFT,1100HP RATED, BILLET REVERSE PATTERN TRANSBRAKE VALVE BODY, BILLET ALUMINUM DRUM

Part Number: FTI-TH400-45UBC

Not Yet Reviewed

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission, TH400, Full Manual Valve Body, ATI SuperCase, Trans-brake, Chevy, Reverse, Each

Part Number: ATI-401603SC

Not Yet Reviewed

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

Automatic Transmission Tailhousing, Aluminum, Natural, GM, TH400, Each

Part Number: REI-SH400HR

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

GM TH400 RACING Trans, CHEVY ULTRA BELL,SHORT SHAFT, 1800HP RATED, BILLET REVERSE PATTERN TRANSBRAKE W/ENGINE BRAKING , BILLET PRO MOD ALUMINUM DRUM

Part Number: FTI-TH400-5EB2

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

GM TH400 RACING Trans, CUT FOR ULTRA BELL,SHORT SHAFT,1100HP RATED, BILLET REVERSE PATTERN TRANSBRAKE W/ENGINE BRAKING, BILLET ALUMINUM DRUM

Part Number: FTI-TH400-45EB2

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

GM TH400 RACING Trans, 2 SPEED,1.48 LOW,CHEVY ULTRA BELL,SHORT SHAFT, 2000HP RATED, 2 SPEED FORWARD PATTERN TRANSBRAKE VALVE BODY

Part Number: FTI-TH400-52SPUB

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

LVL-5 TH400 W/O BELLHOUSING

Part Number: FTI-TH400-5UBC

Not Yet Reviewed

Estimated Ship Date: Sep 3, 2025 if ordered today

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Estimated Ship Date: Sep 3, 2025 if ordered today

Automatic Transmission Controllers, Kickdown Switches, Buick, Chevy, GMC, Oldsmobile, Pontiac, TH400, Kit

Part Number: BMM-20297

4.3 out of 5 stars ( 43 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission Rebuild Kit, U-Build It, Steels, 4 Clutches, Gaskets, Seals, Filter, Chevy, TH400, Kit

Part Number: FTI-F4019-4

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission Valve Body, Trans-Brake Valve Body, Full Manual, Billet Aluminum, Chevy, TH400, Reverse Shift Pattern, Each

Part Number: TOS-4009N

Not Yet Reviewed

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission Rebuild Kit, U-Build It, Steels, 5 Clutches, Gaskets, Seals, Filter, Chevy, TH400, Kit

Part Number: FTI-F4019-5

Not Yet Reviewed

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission Pumps, High Volume, Cast Iron, Cast-In, 8-Bolt, GM, TH400, Each

Part Number: FTI-F404581

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Automatic Transmission Rebuild Kit, U-Build It, Steels, 3 Clutches, Gaskets, Seals, Filter, Chevy, TH400, Kit

Part Number: FTI-F4019

2.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

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