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.

Showing In Stock Items. Show All 107 Items.

Not Showing Customizable Items. View Customizable Items.

Individual Parts

Part Groups

Results 1 - 25 of 73

EPI Performance Primary Clutch Springs 53-2561

clutch spring SPRING- BLU PRIMRY SKIDOO SPRING- BLU PRIMRY SKIDOO

Part Number: ERL-SDPS-1

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

EPI Performance Primary Clutch Springs 53-2568

EPI SPRING

Part Number: ERL-SDPS-3

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

...Loading

Estimated Ship Date: May 11, 2026 if ordered today

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

FTI Performance SR Series 3,000-3,200 Stall Torque Converter SR0082

Torque Converter, SR Series, 3,000-3,200 rpm Stall, 10.750/11.500 in. Bolt Circle, 9.5 in. Dia., 1.703 in. Crank Pilot, Chevy, TH350/TH400, Each

Part Number: FTI-SR0082

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

FTI Performance MR Series 3,500 Stall Torque Converter MR6082

Torque Converters, MR Series, 1.703 in. Crank Pilot Diameter, 30-spline, 9.500 in. Diameter, Race Usage, TH350, TH400, Each

Part Number: FTI-MR6082

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

FTI Performance SR Series 2,800-3,200 Stall Torque Converter SR3082

GM NON LOCK-UP TH350, TH400 2800-3000 STALL

Part Number: FTI-SR3082

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

FTI Performance MR Series 4,000 Stall Torque Converter MR8082

Torque Converters, MR Series, Hard Hitting, 1.703 in. Crank Pilot Diameter, 30-spline, 9.500 in. Diameter, Race Usage, TH350, TH400, Each

Part Number: FTI-MR8082

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

ATP Automatic Transmission Selector Shaft Seals SO-19

Automatic Transmission Shift Shaft Seal, Steel/Rubber, Chevy, GMC< Buick, Pontiac, Cadillac, Jeep, Bentely, Isuzu, Each

Part Number: ATP-SO19

4.64 out of 5 stars ( 11 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Lokar Hi-Tech Kickdown Kits KD-2400U

Automatic Transmission Kickdown Cable, Hi-Tech, Black Vinyl, Natural Aluminum Fittings, GM, TH400, Kit

Part Number: LOK-KD-2400U

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

FTI Performance SR Series 4,000 Stall Torque Converter SR8082

GM NON LOCK-UP TH350, TH400 3800-4000 STALL

Part Number: FTI-SR8082

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

FTI Performance SR Series 2,600-2,800 Stall Torque Converter SR3380

TORQUE CONVERTER

Part Number: FTI-SR3380

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

...Loading

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Page 1 of 3
Next