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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Sonnax C Ratio Servo Kits K13259C-1

Servo Kit, Billet Aluminum, Ford, C4, C5, Kit

Part Number: SOX-K13259C-1

5.0 out of 5 stars ( 1 )

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Summit Racing™ Ring and Pinion Sets SUM-741001 GM 8.5/8.6 in. 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: SUM-741001

4.28 out of 5 stars ( 36 )

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Sonnax 2nd Gear Corvette Ratio Servo Kits 77701-04K

Servo Piston, 2nd Gear Type, Billet Aluminum, Piston D-rings, Housing, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77701-04K

5.0 out of 5 stars ( 2 )

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Tremec TKX Manual Transmissions TCET17765

Manual Transmission, TKX, 5 Gears, 1.125 in. - 26-spline Input, 31-spline Output, 2.87:1 First Gear Ratio, Aluminum Case, Tremec TKX, Ford, Each

Part Number: REM-TCET17765

5.0 out of 5 stars ( 6 )

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TCI Super StreetFighter TH400 Transmission 211095

TCI Super StreetFighter TH400 Transmission 211095

Automatic Transmission, Remanufactured, Super StreetFighter, 30-spline Input, 2.48 First Gear Ratio, Chevy, TH400, Each

Part Number: TCI-211095

4.43 out of 5 stars ( 7 )

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Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.5/8.6 Inch YDGGM8.5-3-30-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.5/8.6 in., 30 Spline, 2.73 Up Ratio, Each

Part Number: YGA-26016

4.23 out of 5 stars ( 35 )

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Currie 9 in. Third Members CE-9CT370S50

Third Member, 3.70:1 Gear Ratio, Currie TwinTrac, 31-Spline, Nodular Iron Case, Big Bearing Pinion Support, 1350 Yoke, Each

Part Number: CUR-CE-9CT370S50

5.0 out of 5 stars ( 2 )

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Currie 9 in. Third Members CE-9CT350S50

Third Member Complete Assembly, Ford 9 in., 3.50:1 Gear Ratio, TwinTrac, 31-Spline, Nodular Iron Case, Big Bearing Pinion Support, 1350 Yoke, Each

Part Number: CUR-CE-9CT350S50

5.0 out of 5 stars ( 1 )

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Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.5 Inch YDGGM8.5-3-28-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.5 in., 28 Spline, 2.73 Up Ratio, Each

Part Number: YGA-26015

4.64 out of 5 stars ( 11 )

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Tremec TKX Manual Transmission for Ford - TCET18086

Manual Transmission, TKX, 5 Gears, 1.063 in. - 10-spline Input, 31-spline Output, 3.27:1 First Gear Ratio, Aluminum Case, Tremec TKX, Ford, Each

Part Number: REM-TCET18086

5.0 out of 5 stars ( 3 )

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Mopar Replacement Differential Assemblies for 2016-2021 CHALLENGER, 2015-2021 CHARGER - 68427796AA

Independent Suspension Differential Assembly, Rear, 3.09 Gear Ratio, with Ring/Pinion, Bearings, Seals, 230mm Axle, Dodge, Each

Part Number: MOP-68427796AA

4.94 out of 5 stars ( 17 )

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Tremec T-56 Manual Transmissions TUET11010

Manual Transmission, T-56, 6 Gears, 1.125 in. - 26-spline Input, 31-spline Output, 2.66:1 First Gear Ratio, Aluminum Case, T-56, Ford, Each

Part Number: REM-TUET11010

5.0 out of 5 stars ( 1 )

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Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.875 Inch (12-bolt) YDGGM12P-3-30-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.875 in., 30 Spline, 3.08 to 3.90 Ratio, Each

Part Number: YGA-26011

5.0 out of 5 stars ( 6 )

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Tremec Magnum-F Manual Transmissions for 1998-2002 CAMARO, FIREBIRD - TUET17638

Manual Transmission, Magnum-F, 6 Gears, 1.125 in. - 26-spline, 31-spline Output, 2.97:1 First Gear Ratio, Tremec Magnum, Chevrolet, Pontiac, Each

Part Number: REM-TUET17638

5.0 out of 5 stars ( 1 )

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Ford Performance Parts Ring and Pinion Sets M-4209-88373 Ford 8.8 in. 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, Ford, 8.8 in., Set

Part Number: FMS-M-4209-88373

4.85 out of 5 stars ( 48 )

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Tremec TKX Manual Transmission for Ford - TCET18084

Manual Transmission, TKX, 5 Gears, 1.125 in. - 26-spline Input, 31-spline Output, 2.87:1 First Gear Ratio, Aluminum Case, Tremec TKX, Ford, Each

Part Number: REM-TCET18084

5.0 out of 5 stars ( 1 )

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Eaton Detroit Truetrac 30 Spline Differential GM 10.5 Inch (14-bolt) 915A545

Differential, Eaton Detroit Truetrac, 30-Spline, GM, 10.5 in. Ring Gear, 4.10 and Lower Ratios, Each

Part Number: ETN-915A545

4.62 out of 5 stars ( 13 )

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Currie 9 in. Third Members CE-9CT389S50

Third Member, 3.89:1 Gear Ratio, Currie TwinTrac, 31-Spline, Nodular Iron Case, Big Bearing Pinion Support, 1350 Yoke, Each

Part Number: CUR-CE-9CT389S50

5.0 out of 5 stars ( 1 )

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Ford Performance Parts 8.8 in. IRS Loaded Differential Housings for 2015-2025 MUSTANG - M-4001-88355B

Independent Suspension Differential Assembly, Traction-Lok, 3.55:1 Ratio, Ford, Mustang, Each

Part Number: FMS-M400188355B

3.0 out of 5 stars ( 3 )

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Tremec T-56 Manual Transmissions TUET11012

Manual Transmission, T-56, 6 Gears, 1.125 in. - 26-spline, 31-spline Output, 2.97:1 First Gear Ratio, Buick, Cadillac, Chevy, Olds, Pontiac, Each

Part Number: REM-TUET11012

5.0 out of 5 stars ( 1 )

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Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.2 Inch YDGGM8.2-3-28-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.2 in., 28 Spline, 3.08 Up Ratio, Each

Part Number: YGA-26021

5.0 out of 5 stars ( 4 )

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Motive Gear Ring and Pinion Sets GM10-411A GM 8.5/8.6 in. 4.11 Gears

Ring and Pinion Gears, 4.11:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-411A

4.67 out of 5 stars ( 6 )

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Sonnax Input Carrier Kits 77284-K

Automatic Transmission Gears, Input Carrier Kits, Front Carrier, Steel, 2.84:1 First Gear Ratio, 1.55:1 Second Gear, 1.00:1 Third Gear, GM, Kit

Part Number: SOX-77284-K

5.0 out of 5 stars ( 5 )

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Ford Performance Parts Tremec 6-Speed Transmissions for 1999-2004 MUSTANG - M-7003-M6266

Manual Transmission, Tremec, 6-speed, Aluminum Case, 26-spline Input, 2.66:1 First Gear Ratio, Ford, Each

Part Number: FMS-M-7003-M6266

5.0 out of 5 stars ( 2 )

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FTI Performance 700R4 Level 2 Transmissions FT7R4-2H

Automatic Transmission, 700R4 Level 2, 4 Gears, Automatic Valve Body, Forward Shift Pattern, 3.06 First Gear Ratio, Chevy, THM700-R4/4L60/MD8, Each

Part Number: FTI-FT7R4-2H

1.0 out of 5 stars ( 1 )

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