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™ 35-Spline 4L80E Transmission Rebuild Kit SUM-705064

Automatic Transmission Rebuild Kit, Gaskets, Seals, Band, Clutches, Filter, Chevy, 4L80E, 35-spline Input, Kit

Part Number: SUM-705064

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

Summit Racing™ 30-Spline 4L60E, 4L65E, 4L70E Transmission Rebuild Kit SUM-705066

Automatic Transmission Rebuild Kit, Gaskets, Seals, Band, Clutches, Filter, Chevy, 04-10, 4L60E, 4L65E, 4L70E, 30-spline Input, Kit

Part Number: SUM-705066

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ 30-Spline 4L60E Transmission Rebuild Kit SUM-705005

Summit Racing™ 30-Spline 4L60E Transmission Rebuild Kit SUM-705005

Automatic Transmission Rebuild Kit, GM, 4L60E, 30-Spline, Kit

Part Number: SUM-705005

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ 30-Spline TH350 Transmission Rebuild Kit SUM-705000

Automatic Transmission Rebuild Kit, GM, TH350, Non-Lockup, 30-Spline, Kit

Part Number: SUM-705000

4.18 out of 5 stars ( 11 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 30-Spline TH400 Transmission Rebuild Kit SUM-705021

Automatic Transmission Rebuild Kit, Kolene Steels, GM, TH400, Non-Lockup, 30-Spline, Kit

Part Number: SUM-705021

4.3 out of 5 stars ( 10 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 30-Spline TH350 Transmission Rebuild Kit SUM-705020

Automatic Transmission Rebuild Kit, Kolene Steels, GM, TH350, Non-Lockup, 30-Spline, Kit

Part Number: SUM-705020

4.43 out of 5 stars ( 28 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 30-Spline 700R4 Transmission Rebuild Kit SUM-705023

Automatic Transmission Rebuild Kit, Kolene Steels, GM, 700R4, Lockup, 30-Spline, Kit

Part Number: SUM-705023

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

Summit Racing™ High Performance 30-Spline 4L60E Transmission Rebuild Kit SUM-705025

Automatic Transmission Rebuild Kit, Kolene Steels, GM, 4L60E, 30-Spline, Kit 93-03

Part Number: SUM-705025

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ 30-Spline 700R4 Transmission Rebuild Kit SUM-705003

Automatic Transmission Rebuild Kit, GM, 700R4, Lockup, 30-Spline, Kit

Part Number: SUM-705003

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 30-Spline 4L60E/4L70E Transmission Rebuild Kit SUM-705026

Automatic Transmission Rebuild Kit, Hi Performance, Kolene Steels, GM, 4L60E/4L70E, 30-Spline, Kit 04 and up

Part Number: SUM-705026

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

FTI Performance Powerglide U-Build It Kits F2547-10

Automatic Transmission Rebuild Kit, U-Build It, Bands, 10 Clutches, Gaskets, Seals, Filter, Chevy, Powerglide, Kit

Part Number: FTI-F2547-10

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

TCI Master Racing Overhaul Kits 379110

Automatic Transmission Rebuild Kit, Master Racing, GM, 4L60E, Kit

Part Number: TCI-379110

4.65 out of 5 stars ( 20 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 31-Spline Ford C6 Transmission Rebuild Kit SUM-705040

Automatic Transmission Rebuild Kit, Kolene Steels, Ford, Lincoln, Mercury, C-6, 31-Spline, Kit

Part Number: SUM-705040

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 30-Spline TH350 Transmission Rebuild Kit SUM-705020-XK

Automatic Transmission Rebuild Kit, HP Standard Steels, GM, TH350, Non-Lockup, 30-Spline, Kit

Part Number: SUM-705020-XK

3.43 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 26-Spline C4 Transmission Rebuild Kit SUM-705029

Automatic Transmission Rebuild Kit, Kolene Steels, Ford, Lincoln, Mercury, C-4, 26-Spline, Kit

Part Number: SUM-705029

3.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

FTI Performance TH400 U-Build It Kits F4019-4

Automatic Transmission Rebuild Kit, U-Build It, Steels, 4 Clutches, Gaskets, Seals, Filter, Chevy, TH400, Kit

Part Number: FTI-F4019-4

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

Ford Performance Parts 8.8 in. Traction-Lok Rebuild Kits for 1986-2014 MUSTANG - M-4700-C

Differential Rebuild Kit, Trac-Lok, Clutch Pack, Clutch Shims, Ford, 8.8 in., Kit

Part Number: FMS-M-4700-C

4.89 out of 5 stars ( 56 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Ford Performance Parts T-5 Transmission Rebuild Kits for 1985-2004 MUSTANG, 1985-1988 THUNDERBIRD - M-7000-A

Transmission Rebuild, T-5, Ford, World Class, Kit

Part Number: FMS-M-7000-A

4.5 out of 5 stars ( 16 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

FTI Performance Gasket and Seal Kits F4053

Automatic Transmission Gaskets and Seals, PTFE Sealing Rings, TH400, Chevy, Kit

Part Number: FTI-F4053

4.73 out of 5 stars ( 15 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Sonnax Sure Cure® Automatic Transmission Rebuild Kits SC-4L60E

Automatic Transmission Rebuild Set, with TV Cable Corrector Kit, Checkballs, etc., GM 4L60-E, Buick, Cadillac, Chevy, Oldsmobile, Pontiac, Kit

Part Number: SOX-SC-4L60E

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ 31-Spline C6 Transmission Rebuild Kit SUM-705010

Automatic Transmission Rebuild Kit, Ford, Lincoln, Mercury, C-6, 31-Spline, Kit

Part Number: SUM-705010

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 31-Spline Ford AOD Transmission Rebuild Kit SUM-705041

Automatic Transmission Rebuild Kit, Kolene Steels, Ford, Lincoln, Mercury, AOD, 31-Spline, Kit

Part Number: SUM-705041

Not Yet Reviewed

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Brinn Transmission Rebuild Kits 70041

Transmission Rebuild Kit, for 70001 & 70010, Kit

Part Number: BRN-70041

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

B&M Transkits 30229

Automatic Transmission Rebuild Kit, TransKit, GM, M38, TH350, TH375B, Kit

Part Number: BMM-30229

4.33 out of 5 stars ( 27 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Summit Racing™ High Performance 17-Spline Powerglide Transmission Rebuild Kit SUM-705022

Automatic Transmission Rebuild Kit, Kolene Steels, GM, Powerglide, Non-Lockup, 17-Spline, Kit

Part Number: SUM-705022

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

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