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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Results 1 - 25 of 2000 +

4x4 Posi-Lok Positive Axle Engagement Systems for 1994-2002 RAM 3500, RAM 2500, 1994-2001 RAM 1500 - 400

Front Axle Actuator, Posi-Lok, Dodge, Pickup, Kit

Part Number: POS-400

4.7 out of 5 stars ( 146 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Summit Racing™ Aluminum 10 Bolt GM 8.5 Inch (truck, front) Differential Cover SUM-730507

Differential Cover, Aluminum, Polished, GM, 8.5 in., 10-Bolt, Front, Kit

Part Number: SUM-730507

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

4x4 Posi-Lok Positive Axle Engagement Systems 600

Front Axle Actuator, Posi-Lok, Chevy, GMC, Kit

Part Number: POS-600

4.52 out of 5 stars ( 60 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Transmission Specialties Powerglide Front Pump Assemblies 2508A

Automatic Transmission Pump, 7-Bolt, Front, GM, Powerglide, Each

Part Number: TOS-2508A

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Spicer Drivetrain Products Front Axle Shafts 10013778

Axle Shaft Assembly, Front Passenger, 35-spline, Steel, 45.960 in. Length, Dana 60, Ford, Each

Part Number: SDH-10013778

4.74 out of 5 stars ( 39 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

TCI Circle Track Automatic Transmission Front Pump Drives 162000

TCI Circle Track Automatic Transmission Front Pump Drives 162000

Front Pump Drive GM TH350/400 Two Piece Neutral Balance

Part Number: TCI-162000

Not Yet Reviewed

Estimated Ship Date: Dec 23, 2025 if ordered today

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Estimated Ship Date: Dec 23, 2025 if ordered today

TCI Circle Track Automatic Transmission Front Pump Drives 745004

Front Pump Drive, Steel, Powerglide, 1-Piece, Chevy, 5.0, 5.7L, Kit

Part Number: TCI-745004

Not Yet Reviewed

Estimated Ship Date: Dec 23, 2025 if ordered today

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Estimated Ship Date: Dec 23, 2025 if ordered today

TCI Circle Track Automatic Transmission Front Pump Drives 745100

Front Pump Drive, Powerglide to Ford, 289, 302, and 351 Windsor, 351 Cleveland, 3-Piece, Neutral Balance, Steel, With/Without Motor Plates, Ford, Kit

Part Number: TCI-745100

Not Yet Reviewed

Estimated Ship Date: Dec 23, 2025 if ordered today

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Estimated Ship Date: Dec 23, 2025 if ordered today

4x4 Posi-Lok Front Axle Engagement Replacement Parts 100

Central Axle Disconnect Fork, Upgrade, Dodge, Jeep, W-Series, Pickup, Trailduster, Each

Part Number: POS-100

4.69 out of 5 stars ( 16 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

4x4 Posi-Lok Positive Axle Engagement Systems 800

Front Axle Actuator, Posi-Lok, Chevy, GMC, Kit

Part Number: POS-800

4.45 out of 5 stars ( 29 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

4x4 Posi-Lok Positive Axle Engagement Systems 500

Front Axle Actuator, Posi-Lok, Chevy, GMC, 4WD, Kit

Part Number: POS-500

4.03 out of 5 stars ( 31 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

4x4 Posi-Lok Positive Axle Engagement Systems 450

Front Axle Actuator, Posi-Lok, Dodge, Kit

Part Number: POS-450

4.47 out of 5 stars ( 30 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

4x4 Posi-Lok Positive Axle Engagement Systems for 1997-2003 F-150, 2004 F-150 HERITAGE - 750

Front Axle Actuator, Posi-Lok, Ford, Kit

Part Number: POS-750

4.84 out of 5 stars ( 25 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Spicer Drivetrain Products Front Axle Shafts 10013781

Axle Shaft Assembly, Front Driver Side, Steel, Dana Super 60, Ford, Each

Part Number: SDH-10013781

4.76 out of 5 stars ( 38 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

4x4 Posi-Lok Perm-Lok Systems 1100

Front Axle Engagement, Perm-Lok, Jeep, Dana 30/44/60, Kit

Part Number: POS-1100

4.21 out of 5 stars ( 14 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Alloy USA Axle Lock Kits for 1994-2004 RAM 1500, RAM 2500 - 450400

Axle Lock Kit, Front, Manual, Hardware, Dodge, Dana 44, Dana 60, 4WD, Kit

Part Number: ALY-450400

4.2 out of 5 stars ( 10 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

RT Off-Road Mechanical Axle Engagement Systems for 1984-1993 CHEROKEE, 1986-1992 COMANCHE, 1987-1995 WRANGLER - RT23003

Front Axle Engagement System, Mechanical, Dana 30, Jeep, Kit

Part Number: RTO-RT23003

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Alloy USA Axle Lock Kits for 1985-1993 RAMCHARGER - 450450

Axle Lock Kit, Front, Manual, Hardware, Dodge, 5 Lug, 4WD, Kit

Part Number: ALY-450450

Not Yet Reviewed

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

Alloy USA Axle Lock Kits for 1997-2003 F-150, 2004 F-150 HERITAGE - 450750

Axle Lock Kit, Front, Manual, Hardware, Ford, 5 Lug, 4WD, Kit

Part Number: ALY-450750

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

Alloy USA Axle Lock Kits 450600

Axle Lock Kit, Front, Manual, Hardware, Chevrolet, GMC, 6 Lug, 4WD, Kit

Part Number: ALY-450600

3.25 out of 5 stars ( 4 )

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

Alloy USA Axle Lock Kits 450500

Axle Lock Kit, Front, Manual, Hardware, Chevy, GMC, GM 7.2 in. IFS, Kit

Part Number: ALY-450500

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

Alloy USA Axle Lock Kits for 1984-1991 CHEROKEE, 1987-1995 WRANGLER - 450900

Axle Lock Kit, Front, Manual, Hardware, Jeep, Dana 30, 4WD, Kit

Part Number: ALY-450900

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

RT Off-Road Mechanical Axle Engagement Systems for 1984-1993 CHEROKEE, 1986-1992 COMANCHE, 1987-1995 WRANGLER - RT23002

Front Axle Engagement System, Mechanical, Dana 30, Jeep, Kit

Part Number: RTO-RT23002

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

4x4 Posi-Lok Perm-Lok Systems 1000

"Perm-Lok" - Positive Axle Engagement System

Part Number: POS-1000

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/17/2025

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Estimated Ship Date: Monday 11/17/2025

Zumbrota Drivetrain 4WD Front Axle Actuator Housings NAA15200680

4WD Front Axle Actuator Housing, Front, Each

Part Number: ZUD-NAA15200680

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

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Estimated Ship Date: Nov 28, 2025 if ordered today

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Zumbrota Drivetrain 4WD Front Axle Actuator Housings NAA15200681

4WD Front Axle Actuator Housing, Front, Each

Part Number: ZUD-NAA15200681

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

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Estimated Ship Date: Nov 28, 2025 if ordered today

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