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Transmission & Drivetrain

Performance & Replacement Transmission & Drivetrain Parts

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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.

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Individual Parts

Results 1 - 25 of 165

Automatic Transmission, Plus, Forward Shift Pattern, Automatic Valve Body, Triple Torque Converter, Chevy, GMC, Allison 1000, 6.6L Diesel, Each

Part Number: BDD-1064754BM

Not Yet Reviewed

Estimated Ship Date: Nov 5, 2026 if ordered today

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Estimated Ship Date: Nov 5, 2026 if ordered today

Transmission Control Module, Upgrade Kit, 2WD, 6.6L Duramax, Allison LCT1000, Chevy GMC, Kit

Part Number: APF-6019204368

Not Yet Reviewed

Estimated Ship Date: Nov 6, 2026 if ordered today

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Estimated Ship Date: Nov 6, 2026 if ordered today

Transmission Controller, Co-Pilot Transmission Controller, Chevy, GMC, Allison 1000, Diesel, Each

Part Number: APF-6019244248

Not Yet Reviewed

Estimated Ship Date: Nov 6, 2026 if ordered today

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Estimated Ship Date: Nov 6, 2026 if ordered today

Transmission Control Module, Upgrade Kit, 2WD, 6.6L Duramax, Allison LCT1000, Chevy GMC, Kit

Part Number: APF-6019204344

Not Yet Reviewed

Estimated Ship Date: Nov 6, 2026 if ordered today

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Estimated Ship Date: Nov 6, 2026 if ordered today

Automatic Transmission Controller, TapShifter, Chevy, GMC, Allison 1000, Kit

Part Number: FLE-S0053

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 25, 2026 if ordered today

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Estimated Ship Date: Nov 25, 2026 if ordered today

Automatic Transmission Controller, Tap Shifter, Chevy, GMC, Allison 1000, Kit

Part Number: BDD-1031360

Not Yet Reviewed

Estimated Ship Date: Nov 4, 2026 if ordered today

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Estimated Ship Date: Nov 4, 2026 if ordered today

Automatic Transmission Controller, TapShifter, Chevy, GMC, Allison 1000, Kit

Part Number: FLE-S0054

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 30, 2026 if ordered today

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Estimated Ship Date: Nov 30, 2026 if ordered today

Automatic Transmission Controller, TapShifter, Chevy, GMC, Allison 1000, Kit

Part Number: FLE-S0072

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

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Estimated Ship Date: Nov 30, 2026 if ordered today

Allison LCT1000 Co-Pilot Transmission Controller Kit, 2006- Early 2007 GM 6.6L Duramax

Part Number: APF-6019244308

Not Yet Reviewed

Estimated Ship Date: Nov 6, 2026 if ordered today

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Estimated Ship Date: Nov 6, 2026 if ordered today

Transmission Control Module, Upgrade Kit, 2WD, 6.6L Duramax, Allison LCT1000, Chevy GMC, Kit

Part Number: APF-6019204416

Not Yet Reviewed

Estimated Ship Date: Nov 6, 2026 if ordered today

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Estimated Ship Date: Nov 6, 2026 if ordered today

Transmission Pan, Ram-Air, Deep, Aluminum, Black, Finned, Allison 1000 Transmission, Chevy, GMC, Each

Part Number: GBE-35146-B

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

2001 - 2010 3 CLUTCH, EXTRA LOW STALL, ALLISON DC1000, DC2000, BILLET COVER

Part Number: FTI-DC1000BA3XLS

Not Yet Reviewed

Estimated Ship Date: Nov 20, 2026 if ordered today

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Estimated Ship Date: Nov 20, 2026 if ordered today

Transmission Pan, Ram-Air, Deep, Aluminum, Black, Finned, Allison 10L1000 Transmission, Chevy, GMC, Each

Part Number: GBE-35148-B

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

2001 - 2010 3 CLUTCH, LOW STALL, ALLISON DC1000, DC2000, BILLET COVER

Part Number: FTI-DC1000BA3

Not Yet Reviewed

Estimated Ship Date: Nov 20, 2026 if ordered today

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Estimated Ship Date: Nov 20, 2026 if ordered today

Torque Converter, Performance, Chevy, Allison 1000, Each

Part Number: BDD-1030230

Not Yet Reviewed

Estimated Ship Date: Nov 5, 2026 if ordered today

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Estimated Ship Date: Nov 5, 2026 if ordered today

Torque Converter, Heavy-Duty Diesel, Chevy, GMC, Allison 1000 Transmission, Each

Part Number: HUP-29BLXFM

Not Yet Reviewed

Estimated Ship Date: Nov 16, 2026 if ordered today

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Estimated Ship Date: Nov 16, 2026 if ordered today

Flexplate, Billet Steel, Duramax 6.6L L5P, Allison LCT1000 Transmission, SFI 29.3, Each

Part Number: APF-3059004440

Not Yet Reviewed

Estimated Ship Date: Nov 6, 2026 if ordered today

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Estimated Ship Date: Nov 6, 2026 if ordered today

BCBS Triple Disc "K" Converter GM Allison - Black 2500-2700

Part Number: PPE-128010326

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Flexplate, Billet Steel, Duramax 6.6L LML, Allison LCT1000 Transmission, SFI 29.3, Each

Part Number: APF-3059004368

Not Yet Reviewed

Estimated Ship Date: Nov 6, 2026 if ordered today

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Estimated Ship Date: Nov 6, 2026 if ordered today

Transmission Pan, Aluminum, Natural Finish, Deep, Extra 4 Qt., Filter, Chevy, GMC, Allison 1000, 2000, 2400, Each

Part Number: PPE-128051000

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

BCBS Triple Disc "E" Converter GM Allison - Black 1800-2200

Part Number: PPE-128010322

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Triple Disc Converter GM Allison - Black 2600-2700

Part Number: PPE-128010320

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Transmission Pan, Aluminum, Black/Brushed Finish, Deep, Extra 4 Qt., Filter, Chevy, GMC, Allison 1000, 2000, 2400, Each

Part Number: PPE-128051010

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Transmission Filter, Gasket, Chevy, GMC, Hummer, Allison 1000, Each

Part Number: WIX-57701

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Automatic Transmission Modular Plugs, Pacific Performance, EPC Blocker, for Allison 1000, Easy Installation, GMC, 2500HD, 3500HD, Savana, 6.6L, Each

Part Number: PPE-128041119

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today