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 319

Valair Performance NV5600 Flywheel To Crank Spacers 580SPACER

Flywheel To Crank Spacer, Billet Steel, Designed for Use with A NV5600 Flywheel In A G56 Application, Dodge, Ram, Each

Part Number: VAI-580SPACER

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Sonnax Clutch Hub Shims 34006-05

Clutch Hub Shims, 4L80E, 4L85E, TH400, TH425, Set of 10

Part Number: SOX-34006-05

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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RAM Pressure Plate Shim Kits 550

RAM Pressure Plate Shim Kits 550

Pressure Plate Shims, Steel, Kit

Part Number: RAM-550

5.0 out of 5 stars ( 2 )

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Hays Hydraulic Clutch Release Bearing Shims 82-117

Throwout Bearing Replacement Components, Hydraulic Clutch Release Bearing Shims, 0.50 in. Thick, T-56, Tremec TR6060, Each

Part Number: HAY-82-117

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Hays Hydraulic Clutch Release Bearing Shims 82-118

Throwout Bearing Shim, .625 in. Thick, T-56, TR-6060, Each

Part Number: HAY-82-118

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Clutch Hub Shims 28304-30

SHIM, CLTCH HUB.032 THK, BAG/3 POWERGLIDE

Part Number: SOX-28304-30

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Yukon Gear & Axle Differential Clutch Sets YPKF9-P-31-REB

Differential Carrier Rebuild Kit, Traction-Lok, Clutch Pack, Clutch Shims, Roll Pin, Rear, Ford 9 in., Kit

Part Number: YGA-16027

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

SPEC Super Twin Multi-Disc Clutch and Flywheel Kits for 2008-2016 CHALLENGER - SD80ET

Clutch Kit, Super Twin, E-Trim, Sintered Iron, Full Face/Unsprung Hub, Dodge, Challenger, Kit

Part Number: SXC-SD80ET

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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SPEC Super Twin Multi-Disc Clutch and Flywheel Kits for 1984-1988 CORVETTE - SC35SST

Clutch Kit, Super Twin, SS-Trim, Carbon Composite/Kevlar®, Full Face/Unsprung Hub, Chevy, Corvette, Kit

Part Number: SXC-SC35SST

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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SPEC Super Twin Multi-Disc Clutch and Flywheel Kits for 1992-1997 SC300, 1993-1998 SUPRA - ST85SST

Clutch Kit, Super Twin, SS-Trim, Carbon Composite/Kevlar®, Full Face/Sprung Hub, Lexus, Toyota, Supra, Kit

Part Number: SXC-ST85SST

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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SPEC Super Twin Multi-Disc Clutch and Flywheel Kits SN26PT

Clutch Kit, Super Twin, P-Trim, Carbon Composite, 6-Paddle/Unsprung Hub, for Nissan, Skyline, Pull-Type, Kit

Part Number: SXC-SN26PT

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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SPEC Super Twin Multi-Disc Clutch and Flywheel Kits SN23ET

Clutch Kit, Super Twin, E-Trim, Sintered Iron, Full Face/Unsprung Hub, for Nissan, Skyline, Kit

Part Number: SXC-SN23ET

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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McLeod Racing Clutch Kit Replacement Components 655512

STAND KIT, BOLT, NUT, SHIM 2-DISC

Part Number: MCL-655512

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

PRW Power Flywheel and Flexplate Shims and Spacers 1694553

Clutch Flywheel Spacer

Part Number: PQX-1694553

Not Yet Reviewed

Estimated Ship Date: Jun 22, 2026 if ordered today

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Estimated Ship Date: Jun 22, 2026 if ordered today

Yukon Gear & Axle Super Carrier Shims YPKF9-PC-SHIMS

Differential Clutch, Steel Pack, Rear, Open, Ford, 9.75 in., Set

Part Number: YGA-16030

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

Motive Gear Differential Shims 2021288

POWER LOCK CLUTCH PACK KIT

Part Number: MGR-2021288

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

Ford Performance Parts 8.8 in. Traction-Lok Rebuild Kits for 1986-2014 MUSTANG - M-4700-C

Differential Rebuild Kit, Trac-Lok, Clutch Pack, Clutch Shims, Ford, 8.8 in., Kit

Part Number: FMS-M-4700-C

4.89 out of 5 stars ( 57 )

Estimated Ship Date: Tomorrow

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ACDelco GM Genuine Parts Flywheel and Flexplate Spacers 12563532

Flexplate Spacer, Steel, Use When Installing Early GM Transmission to an LS Engine, Each

Part Number: ADO-12563532

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Ford Performance Parts 8.8 in. Traction-Lok Rebuild Kits for 1986-2014 MUSTANG - M-4700-B

Differential Rebuild Kit, Traction-Lok, Clutch Pack, Clutch Shims, Friction Modifier, Ford, 8.8 in., Kit

Part Number: FMS-M-4700-B

4.85 out of 5 stars ( 27 )

Cannot be shipped Internationally

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Cannot be shipped Internationally

Spicer Drivetrain Products Differential Inner Gear Kits 2003857

Differential Carrier Rebuild Kit, Trac-Lok, 35-spline, Clutch Pack, Clutch Shims, Rear, Dana 80, Kit

Part Number: SDH-2003857

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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EPI Performance Secondary Clutch Rebuild Kits 53-2251

Clutch Rebuild Kit, Secondary, Kit

Part Number: ERL-CX400030

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

EPI Performance Primary Clutch Spider Rebuild Kits 53-22482

Spider Rebuild Kit, Primary Clutch Component, Polaris, Kit

Part Number: ERL-CX400014

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

EPI Performance Primary Clutch Rebuild Kits 53-2241

Clutch Rebuild Kit, Primary, Kit

Part Number: ERL-CX400001

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

EPI Performance Primary Clutch Rebuild Kits 53-22442

Clutch Rebuild Kit, Primary, Polaris, Kit

Part Number: ERL-CX400013

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

EPI Performance Primary Clutch Rebuild Kits 53-22444

Clutch Rebuild Kit, Primary, Polaris, Kit

Part Number: ERL-CX400015

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

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