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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 417

Torque Converters, Twister 3/4 Race, Street/Strip, 2,800-3,200 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevy THM400, Buick, Chevy, Each

Part Number: HAY-97-1D28Q

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

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Estimated Ship Date: Oct 6, 2025 if ordered today

Torque Converters, Twister 3/4 Race, 1.703 in. Crank Pilot Diameter, 30-spline, 9.600 in. Diameter, TH350, 2,400 rpm Advertised Flash Stall, Each

Part Number: HAY-97-1B24Q

Not Yet Reviewed

Estimated Ship Date: Today

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Torque Converters, Twister 3/4 Race, 1.703 in. Crank Pilot Diameter, 30-spline, 9.600 in. Diameter, 2,400 rpm Advertised Flash Stall, TH400, Each

Part Number: HAY-97-1D24Q

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

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Estimated Ship Date: Oct 6, 2025 if ordered today

Torque Converters, Twister 3/4 Race, 1.703 in. Crank Pilot Diameter, 30-spline, 9.600 in. Diameter, TH350, 2,800 rpm Advertised Flash Stall, Each

Part Number: HAY-97-1B28Q

Not Yet Reviewed

Estimated Ship Date: Today

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Torque Converters, Twister 3/4 Race, Street/Strip, 2,800-3,200 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, THM350C, Chevy, Each

Part Number: HAY-97-1C28Q

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 6, 2025 if ordered today

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Estimated Ship Date: Oct 6, 2025 if ordered today

Clutch Kit, 1.250 in. Diameter Shaft, 14-Spline, 9.843 in. Diameter Disc, 6-Paddle, Toyota, Kit

Part Number: ACL-TS4-HDG6

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

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Estimated Ship Date: Sep 29, 2025 if ordered today

Clutch Kit, Sport, Performance, Single Disc, 0.938 in. - 21-spline, 8.300 in. Ceramic Disc Diameter, Pressure Plate, Scion, Toyota, Kit

Part Number: ACL-TS6-SPR4

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

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Estimated Ship Date: Sep 29, 2025 if ordered today

Clutch Kit, 1.125 in. Diameter Shaft, 21-Spline, 9.448 in. Diameter Disc, 4-Paddle, Toyota, Kit

Part Number: ACL-TS2-HDR4

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

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Estimated Ship Date: Sep 29, 2025 if ordered today

Clutch Kit, 1.125 in. Diameter Shaft, 21-Spline, 9.448 in. Diameter Disc, 4-Paddle, Toyota, Kit

Part Number: ACL-TS2-XTR4

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

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Estimated Ship Date: Sep 29, 2025 if ordered today

Clutch Kit, .937 in. Diameter Shaft, 21-Spline, 8.346 in. Diameter Disc, 4-Paddle, Scion, Toyota, Kit

Part Number: ACL-TS6-HDG4

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

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Estimated Ship Date: Sep 29, 2025 if ordered today

Clutch Kit, .937 in. Diameter Shaft, 21-Spline, 8.346 in. Diameter Disc, 4-Paddle, Scion, Toyota, Kit

Part Number: ACL-TS6-HDR4

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

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Estimated Ship Date: Sep 29, 2025 if ordered today

Clutch Kit, Sport, Performance, Single Disc, 0.938 in. - 21-spline, 8.300 in. Ceramic Disc Diameter, Pressure Plate, Scion, Toyota, Kit

Part Number: ACL-TS6-SPG4

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

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Estimated Ship Date: Sep 29, 2025 if ordered today

U-Joint, Greaseable, 4-Grooved, Steel, Each

Part Number: ALB-19-1003

Not Yet Reviewed

Estimated Ship Date: Sep 29, 2025 if ordered today

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Estimated Ship Date: Sep 29, 2025 if ordered today

U Joint, Greasable, 4 Grooved Cap Style, Steel, Arctic Cat, Suzuki, Yamaha, Each

Part Number: QDB-41-7802

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

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Estimated Ship Date: Oct 3, 2025 if ordered today

U Joint, Greasable, 4 Grooved Cap Style, Steel, Arctic Cat, Kawasaki, Suzuki, Each

Part Number: QDB-41-7783

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

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Estimated Ship Date: Oct 3, 2025 if ordered today

Gear, Ring and Pinion, 4.11:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-79-0099-1

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Gear, Ring and Pinion, 4.88:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-79-0064-1

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.56:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-79-0072-1

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.33:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-79-0074-1

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Rag Joint, Steering, 3/4 in. 30-spline, 3/4 in. without Splines, Steel, Natural, Each

Part Number: DSR-090205DS

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Transmission Bearing and Seal, Muncie-4 Transmission Bearing/Seal Kit w/Synchro Rings Buick/Chevy/Oldsmobile/Pontiac/Bizzarrini Cars

Part Number: SPZ-72143

Not Yet Reviewed

Estimated Ship Date: Today

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Gear, Ring and Pinion, 5.14:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-79-0027-1

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.33:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-6903781

Not Yet Reviewed

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Gear, Ring and Pinion, 5.14:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-6900341

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.88:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-6900331

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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