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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Summit Racing™ Pro LS 3,000-3,200 Stall Torque Converter SUM-700344

Summit Racing™ Pro LS 3,000-3,200 Stall Torque Converter SUM-700344

Torque Converter, Pro LS, 11 in. Diameter, Chevy, 6L80E/6L90E, 3,000-3,200 Stall, Each

Part Number: SUM-700344

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ Pro LS 3,000-3,200 Stall Torque Converter SUM-700342

Torque Converter, Pro LS, 11 in. Diameter, Chevy LS, 4L80E, 2.650 in. Hub Height, 3,000-3,200 Stall, Each

Part Number: SUM-700342

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

TransGo Automatic Transmission Reprogramming Kits 6L80-TOW&PRO

Automatic Transmission Shift Kits, Reprogramming Kit, Performance/Tow/Haul, GM, 6L45, 6L50, 6L80, 6L90, Kit

Part Number: TRG-6L80-TOW-PRO

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

TransGo Performance Shift Kits 400-PRO

Shift Kit, Performance, Gaskets, Pro-Race, Heavy Duty, Super Show Off, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, TH400, Kit

Part Number: TRG-400-PRO

4.95 out of 5 stars ( 21 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

B&M Magnum Grip Pro Stick Shifters 81104

Shifters, Automatic, Magnum Grip Pro Stick, Pistol Grip Knob, 7.00 in. Shifter Stick Length, Dual Button Grip, Chevrolet, Chrysler, Dodge, Ford, Each

Part Number: BMM-81104

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

TransGo Automatic Transmission Shift Kits 4L60E-PRO

Performance Shift Kit, 4L60E, 4L65E, 4L70E, Kit

Part Number: TRG-4L60E-PRO

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Eddie Marine Pro-X Control Cables PRO-33C12

Control Cable, Marine Pro-X, 33C, Black Polyethylene Jacket, Threaded/Threaded Ends, 10-32 End Size, 12.00 ft. Length, Each

Part Number: EDM-PRO-33C12

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

TransGo Automatic Transmission Reprogramming Kits TFRE-PRO

Automatic Transmission Shift Kit, Reprogramming, 46RE, 47RE, 48RE, Kit

Part Number: TRG-TFRE-PRO

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 1-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 1, 28/28 Teeth, Set

Part Number: SGB-1-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 25-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 25, 20/22 Teeth, Set

Part Number: SGB-25-PRO

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

SCS Gearbox 6-Spline Professional Series Quick-Change Gears 625-PRO

Quick Change Gears, Professional, 6-Spline, E 9310 Steel, Set 625, 18/24 Teeth, Set

Part Number: SGB-625-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 6-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 6, 23/25 Teeth, Set

Part Number: SGB-6-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 6-Spline Professional Series Quick-Change Gears 610-PRO

Quick Change Gears, Professional, 6-Spline, E 9310 Steel, Set 610, 22/32 Teeth, Set

Part Number: SGB-610-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 6-Spline Professional Series Quick-Change Gears 62A-PRO

Quick Change Gears, Professional, 6-Spline, E 9310 Steel, Set 62A, 19/20 Teeth, Set

Part Number: SGB-62A-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 6-Spline Professional Series Quick-Change Gears 66-PRO

Quick Change Gears, Professional, 6-Spline, E9310 Steel, Set 66, 21/27 Teeth, Set

Part Number: SGB-66-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 7K-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 7K, 21/24 Teeth, Set

Part Number: SGB-7K-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 12-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 12, 26/29 Teeth, Set

Part Number: SGB-12-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 14K-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 14K, 20/28 Teeth, Set

Part Number: SGB-14K-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 6-Spline Professional Series Quick-Change Gears 618-PRO

Quick Change Gears, Professional, 6-Spline, E 9310 Steel, Set 618, 20/34 Teeth, Set

Part Number: SGB-618-PRO

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

SCS Gearbox 6-Spline Professional Series Quick-Change Gears 630-PRO

Quick Change Gears, Professional, 6-Spline, E 9310 Steel, Set 630, 18/36 Teeth, Set

Part Number: SGB-630-PRO

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 14-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 14, 23/32 Teeth, Set

Part Number: SGB-14-PRO

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 15-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 15, 19/20 Teeth, Set

Part Number: SGB-15-PRO

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 15K-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 15K, 15/16 Teeth, Set

Part Number: SGB-15K-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 33-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 33, 17/29 Teeth, Set

Part Number: SGB-33-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox 10-Spline Professional Series Quick-Change Gears 5-PRO

Quick Change Gears, Professional, 10-Spline, E 9310 Steel, Set 5, 24/25 Teeth, Set

Part Number: SGB-5-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

SCS Gearbox Quick Change Differential Gears 610A-PRO

6 SPLINE PROFESSIONAL QUICK CHANGE GEARS

Part Number: SGB-610A-PRO

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

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