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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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 )

Estimated Ship Date: Today

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Ford Performance Parts Super-Duty T-5 Transmissions for 1979-1993 MUSTANG - M-7003-Z

Transmission, Manual, Super Duty T-5, Ford, Small Block, Each

Part Number: FMS-M-7003-Z

4.3 out of 5 stars ( 33 )

Estimated Ship Date: Today

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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 )

Estimated Ship Date: Today

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Dorman Driveshafts for 2008-2013 SIERRA 1500, SILVERADO 1500 - 936-623

Driveshaft, Balanced, Assembled, Rear, Aluminum, Length 79.375 in., Diameter 4.000 in., Chevrolet, GMC, Each

Part Number: RNB-936-623

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

TCI Maximizer 4x4 Transmissions 311600

TCI Maximizer 4x4 Transmissions 311600

Automatic Transmission, Remanufactured, Forward Shift Pattern, Automatic Valve Body, Chevy, TH350, 4WD, Each

Part Number: TCI-311600

2.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Automatic Transmission, Remanufactured, Forward Shift Pattern, Automatic Valve Body, Chevy, 700R4, 4WD, Each

Part Number: TCI-371403

Not Yet Reviewed

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TCI Maximizer 4x4 Transmissions 211100

Automatic Transmission, Remanufactured, Forward Shift Pattern, Automatic, Manual Valve Body, Lockup, Chevy, TH400, Replaces TH350 4WD, Kit

Part Number: TCI-211100

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Hughes Performance Street and Strip Transmissions 34-1HD

Automatic Transmission, Street and Strip, Automatic/Manual Valve Body Style, Chevy, TH400, Each

Part Number: HUP-34-1HD

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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TCI Super StreetFighter Transmissions 311005

Automatic Transmission, Remanufactured, Forward Shift Pattern, Automatic/Manual Valve Body, Chevy, TH350, Each

Part Number: TCI-311005

4.0 out of 5 stars ( 19 )

Estimated Ship Date: Today

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TCI Super StreetFighter Transmissions 311105

Automatic Transmission, Remanufactured, Forward Shift Pattern, Automatic/Manual Valve Body, Buick, Oldsmobile, Pontiac, TH350

Part Number: TCI-311105

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits for 1956-1962 CORVETTE - COGM-C1FX

Transmission Combo, ProFit, Tremec TKX, 5-Speed, 2.87:1 First Gear, 0.68:1 Fifth Gear, Chevy, Corvette, 1956-62, Kit

Part Number: AWR-COGM-C1FX

Not Yet Reviewed

Estimated Ship Date: Jun 4, 2026 if ordered today

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Estimated Ship Date: Jun 4, 2026 if ordered today

Dorman Driveshafts for 2007-2013 SIERRA 1500, SILVERADO 1500 - 936-305

Driveshaft, One-Piece, Alumnium, Rear, Chevy, GMC, Each

Part Number: RNB-936-305

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits for 1968-1976 CORVETTE - COGM-C3FX

Transmission Combo, ProFit, Tremec TKX, 5-Speed, 2.87:1 First Gear, 0.68:1 Fifth Gear, Chevy, Corvette, 1968-76, Kit

Part Number: AWR-COGM-C3FX

Not Yet Reviewed

Estimated Ship Date: Jun 4, 2026 if ordered today

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Estimated Ship Date: Jun 4, 2026 if ordered today

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