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.

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Results 1 - 25 of 81

B&M Tork Master 2,300-2,500 Stall Torque Converter 20404

Torque Converter, Tork Master, 2,300-2,500 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20404

4.44 out of 5 stars ( 39 )

Estimated Ship Date: Today

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B&M Tork Master 1,900-2,100 Stall Torque Converter 20400

Torque Converter, Tork Master, 1,900-2,100 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20400

4.34 out of 5 stars ( 79 )

Estimated Ship Date: Today

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B&M Holeshot 2,900-3,200 Stall Torque Converter 20483

Torque Converter, Holeshot, 2,900-3,200 rpm Stall Range, GM, THM350/THM400, Each

Part Number: BMM-20483

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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B&M Holeshot 1,800-2,200 Stall Torque Converter 20416

Torque Converter, Holeshot, 1,800-2,200 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20416

4.42 out of 5 stars ( 19 )

Estimated Ship Date: Today

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B&M Tork Master 2,800-3,200 Stall Torque Converter 20402

Torque Converter, Tork Master, 2,800-3,200 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20402

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Lokar Hi-Tech Kickdown Kits KD-2400HT

Lokar Hi-Tech Kickdown Kits KD-2400HT

Automatic Transmission Kickdown Cable, Hi-Tech, Natural Braided Stainless Steel, Natural Aluminum Fittings, GM, TH400, Kit

Part Number: LOK-KD2400HT

4.65 out of 5 stars ( 20 )

Estimated Ship Date: Today

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B&M Holeshot 2,300-2,500 Stall Torque Converter 20412

Torque Converter, Holeshot, 2,300-2,500 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20412

3.8 out of 5 stars ( 15 )

Estimated Ship Date: Today

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Timken Pinion Bearings M88048

Bearing, Pinion, 1.312 in. Inside Diameter, Each

Part Number: TMK-M88048

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Today

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B&M Nitrous Holeshot 2,300-2,500 Stall Torque Converter 20480

Torque Converter, Nitrous Holeshot, 2,300-2,500 rpm Stall Range, THM350/THM400, Each

Part Number: BMM-20480

4.0 out of 5 stars ( 12 )

Estimated Ship Date: Today

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TCI Full Manual Valve Bodies 221201

Transmission Valve Body, Full Manual, Reverse Shift Pattern, Engine Braking, Chevy, TH400, Each

Part Number: TCI-221201

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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TCI Full Manual Valve Bodies 221200

Valve Body, Cast Iron, Full Manual, Forward Pattern, Engine Braking, Chevy, TH400, Each

Part Number: TCI-221200

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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B&M Nitrous Holeshot 3,200-3,500 Stall Torque Converter 20484

Torque Converter, Nitrous Holeshot, 3,200-3,500 rpm Stall, GM, THM350/THM400, Each

Part Number: BMM-20484

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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TCI Trans-Brake Valve Body Kits 221500

Valve Body, Full Manual, Reverse Pattern, Chevy, TH400, Each

Part Number: TCI-221500

4.57 out of 5 stars ( 7 )

Estimated Ship Date: Today

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FAG USA Wheel Bearing Seals SS2577

Wheel Bearing Seals, Austin, Checker, Dodge, Ford, GM, International, Jeep, Mercury, MG, Plymouth, Each

Part Number: FWB-SS2577

Not Yet Reviewed

Estimated Ship Date: May 26, 2026 if ordered today

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Estimated Ship Date: May 26, 2026 if ordered today

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SKF Bearings Wheel Seals 15142

5 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Moog Premium U-Joints 534G

Universal Joint, S44/GM 3RL Style, Greasable, Steel, Each

Part Number: MOG-534G

4.25 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Lokar Midnight Series Stainless Steel Hi-Tech Kickdown Kits XKD-2400HT

Automatic Transmission Kickdown Cable, Midnight Series Hi-Tech, Black Braided Stainless Steel, Black Aluminum Fittings, GM, TH400, Kit

Part Number: LOK-XKD-2400HT

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Timken Pinion Bearing Races M88010

Bearing Race, Differential Pinion, 2.687 in. Outside Diameter, Each

Part Number: TMK-M88010

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Mr. Gasket Automatic Transmission Oil Pans 9796BMRG

Transmission Pan, Stock, Aluminum, EDP Coated Black, GM TH400, Each

Part Number: MRG-9796BMRG

3.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Moog Super Strength U-Joints 235

Universal Joint, Super Strength, 1344 Style, Greasable, Steel, Each

Part Number: MOG-235

4.34 out of 5 stars ( 44 )

Estimated Ship Date: Today

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Timken Wheel Seals 51098

Wheel Bearing Seal, Buick, Checker, Ford, Lincoln, Mercury, Each

Part Number: TMK-51098

4.14 out of 5 stars ( 7 )

Estimated Ship Date: Today

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B&M Nitrous Holeshot 3,500-3,800 Stall Torque Converter 20485

Torque Converter, Nitrous Holeshot, 3,500-3,800 rpm Stall Range, 30-spline, THM350/THM400, Each

Part Number: BMM-20485

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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TCI Replacement Steel Transmission Pans 228011

Automatic Transmission Pan, Stock, Steel, Chrome, GM TH400, Each

Part Number: TCI-228011

4.62 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Moog Super Strength U-Joints 234

Universal Joint, Super Strength, 1344 Style, Solid, Steel, Each

Part Number: MOG-234

4.42 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Yukon Gear & Axle U-Joints YUJ1435

U-Joint, Spicer 1350-1410 Style, Steel, Each

Part Number: YGA-42006

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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TCI Full Manual Valve Bodies 221100

Valve Body, Full Manual, Reverse Pattern, Chevy, TH400, Each

Part Number: TCI-221100

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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