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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Chevrolet Performance SuperMatic 6L80-E Transmissions 19417102

Automatic Transmission, SuperMatic 6L80-E, 3000-3400 Stall Converter, 650 lb. ft. Torque, Controller, Harness, Chevrolet, LS/LSX Crate Engines, Kit

Part Number: NAL-19417102

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today if shipped by air

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Chevrolet Performance SuperMatic 6L80-E Transmission Kits 19366637

Automatic Transmission Package, SuperMatic 6L80E, 2,400-2,800 Stall Converter, Chevrolet, LSX Engines, RWD, Kit

Part Number: NAL-19366637

Not Yet Reviewed

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Chevrolet Performance T-56 Super Magnum 6-Speed Transmissions 19352208

Manual Transmission, T-56 Super Magnum 6-Speed, 1.125 in. - 26-spline Input, 31-spline Output, Aluminum Case, Chevy, Each

Part Number: NAL-19352208

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today if shipped by air

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Chevrolet Performance Automatic Transmissions 19432680

Automatic Transmission Package, SuperMatic 6L80E, 2,400-2,800 Stall Converter, Chevrolet, LT1/LT4 Engines, 4WD, Kit

Part Number: NAL-19432680

Not Yet Reviewed

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McLeod RST Street Twin Clutch Kits 6405807

Clutch Kit, RXT 1200 Twin Disc, 26 Spline, 1.125 in. Input Shaft, 9.688 in. Disc Diameter, Organic Disc, Kit

Part Number: MCL-6405807

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today if shipped by air

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TCI Forged 168-Tooth Flexplate 399973

Flexplate, 168-Tooth, External Balance, 1-Piece Rear Main Seal, SFI 29.1, Chevy, 454/7.4L, Each

Part Number: TCI-399973

4.65 out of 5 stars ( 20 )

Estimated Ship Date: Today if shipped by air

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TCI Forged 168-Tooth Flexplate 399873

Flexplate, 168-Tooth, External Engine Balance, 1-Piece Rear Main Seal, SFI 29.1, Chevy 454/7.4L, Each

Part Number: TCI-399873

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Today if shipped by air

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Chevrolet Performance SuperMatic 2,400-2,800 Stall Torque Converter 19299802

Torque Converter, 2,400-2,800 Stall, 4L60/65/70/75-E, Late LS V-8 trans. Mates to LS V-8, Single Bolt Pattern, 11.063 in., Each

Part Number: NAL-19299802

Not Yet Reviewed

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Chevrolet Performance 168-Tooth Flexplate 12561217

Flexplate, 168-Tooth, Internal Engine Balance, 1-Piece Rear Main Seal, Chevy, Big Block, 572, Each

Part Number: NAL-12561217

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today if shipped by air

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RAM Billet Steel 168-Tooth Flywheel 1532

RAM Billet Steel 168-Tooth Flywheel 1532

Flywheel, Billet Steel, 168-Tooth, External 41.7 oz. Engine Balance, 33.000 lbs., 1-Piece Rear Main Seal, SFI 1.1, Chevy, 502, Each

Part Number: RAM-1532

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today if shipped by air

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RAM Billet Steel 168-Tooth Flywheel 1558F

Flywheel, Billet Steel, 168-Tooth, Internal Engine Balance, 27.000 lbs., 1-Piece Rear Main Seal, SFI 1.1, Chevy, LSX, V8, Each

Part Number: RAM-1558F

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today if shipped by air

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Chevrolet Performance 168-Tooth Flexplate 19125597

Flexplate, 168-Tooth, Internal Engine Balance, Chevy, 6.2L, 8-Bolt, Each

Part Number: NAL-19125597

Not Yet Reviewed

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Chevrolet Performance 168-Tooth Flywheel 12582964

Flywheel, Iron, 168-Tooth, 14 in. Outside Diameter, 11.5 in. Clutch, Chevy, 572, Crate Engine, Each

Part Number: NAL-12582964

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today if shipped by air

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Lakewood Bellhousing Adapters 15901LKW

Bellhousing Adapter, Chevy LS, LT to Conventional, Kit

Part Number: LAK-15901LKW

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today if shipped by air

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Chevrolet Performance Transmission Installation Kits 19329416

Flexplate, Transmission Installation, 168-tooth, Steel, Internal Engine Balance, 8-Bolt, Flexplate Covers, Chevy, Kit

Part Number: NAL-19329416

Not Yet Reviewed

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McLeod Steel 168-Tooth Flywheel 460538

Flywheel, 168-tooth, Internal Engine Balance, Steel, 30 lbs., SFI 1.1, Cadillac, Chevy, 6.2L, 7.4L, Each

Part Number: MCL-460538

Not Yet Reviewed

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Chevrolet Performance 168-Tooth Flexplate 10185034

Flexplate, 168-Tooth, External Engine Balance, 1-Piece Rear Main Seal, Chevy, Big, Block, 454/ 7.4L, Each

Part Number: NAL-10185034

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today if shipped by air

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ATP 168-Tooth Flexplate Z-231

Flexplate, 168-tooth, Steel, External Balance, Chevy, GMC, 7.4L, Each

Part Number: ATP-Z231

3.5 out of 5 stars ( 4 )

Estimated Ship Date: Today if shipped by air

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RAM Billet Aluminum 168-Tooth Flywheel 2552

Flywheel, 168-Tooth, 14 in. Diameter, Internal Engine Balance, 16.000 lbs., 1-Piece Rear Main Seal, SFI 1.1, Billet Aluminum, Chevy, V8, LS, Each

Part Number: RAM-2552

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

Centerforce Billet Steel 168-Tooth Flywheel 700160

Flywheel, Billet Steel, 168-Tooth, 35.7 lb., External Engine Balance, SFI 1.1, Chevy, 4.3, 5.0, 5.7L, Each

Part Number: CTF-700160

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today if shipped by air

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Chevrolet Performance SuperMatic 3,000-4,000 Stall Torque Converter 19299803

Torque Converter, 3,000-3,400 Stall, 4L60/65/70/75-E, Late LS V-8 trans. Mates to LS V-8, Single Bolt Pattern, 11.063 in., Each

Part Number: NAL-19299803

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today if shipped by air

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Chevrolet Performance SuperMatic 2,400-2,800 Stall Torque Converter 19299800

Torque Converter, 2,400-2,800 Stall, 4L60/65/70/75-E, Late LS V-8 trans. Mates to Early Gen 1 SBC/BBC, Dual Bolt Pattern, 10.75 and 11.50 in. Each

Part Number: NAL-19299800

Not Yet Reviewed

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Chevrolet Performance SuperMatic Transmission Control Systems 19332775

Automatic Transmission Controller, SuperMatic, GM, 4L60E, Kit

Part Number: NAL-19332775

Not Yet Reviewed

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Chevrolet Performance SuperMatic 2,400-2,800 Stall Torque Converter 19431972

Torque Converter, 2400-2800 Stall, 6L80E, Mate to LS Engine, Extended pilot, Single Bolt Pattern 11.063, Each

Part Number: NAL-19431972

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

American Powertrain Science Friction 168-Tooth Flywheel FWCV-10007

SCIENCE FRICTION Billet Steel 168t Flywheel, 1-piece main seal 91-up 454, 11" clutch.

Part Number: AWR-FWCV10007

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

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