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Transmission & Drivetrain

Performance & Replacement Transmission & Drivetrain Parts

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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.

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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Individual Parts

Results 1 - 25 of 57

Shift Kit, Automatic Type, Includes .500 in. Boost Valve, GM, 4L60E, Each

Part Number: TRG-4L60E-HD2

4.75 out of 5 stars ( 59 )

Estimated Ship Date: Today

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Shift Improver Performance Pack, 4L60E, 4L65E, 4L70E, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: SOX-HP-4L60E-01

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Shift Kit, Shift Improvement, ISO-CON Valve, GM, 4L60E, 4L65E, 4L70E, 4L75E, Each

Part Number: TRG-SK4L60E

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Automatic Transmission, Up to 500 hp/500 ft. lbs, Max, Level 3, Two Piece Case, 4L60E, RWD, 2,200 - 2,400 Stall, Chevrolet, Kit

Part Number: GES-GS4L60E2L3

Not Yet Reviewed

Estimated Ship Date: Today

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

Part Number: TRG-4L60E-PRO

5.0 out of 5 stars ( 4 )

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Boost Valve and Bushing, .500 in., 236 psi Forward Pressure, Small/Big Blocks, 4L60E, Kit

Part Number: TRG-4L60E-BOOST

4.67 out of 5 stars ( 15 )

Estimated Ship Date: Today

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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

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Shift Kit, Stick Type, GM, 4L60E 1993-2005, Competition, Off-Road, Pro-Street, Each

Part Number: TRG-4L60E-3

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Pressure Booster, Hydraulic Line, TV Boost Valve, GM, 4L60E, 4L65E, 4L70E, Late Pump, 1.810 in. Long, Kit

Part Number: SOX-4L60E-LB2

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Pressure Booster, Hydraulic Line, TV Boost Valve, GM, 4L60E, 4L65E, 4L70E, Early Pump, 1.907 in. Long, Kit

Part Number: SOX-4L60E-LB1

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Specialty Components, 4L60E Oversized actuator feed limit valve and spring

Part Number: TRG-4L60E-AFL-OS

Not Yet Reviewed

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Specialty Components, 4L60E, 4L65E, 4L70E Drop-in Pressure Regulator Valve

Part Number: TRG-4L60E-PR

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Specialty Components, 4L60E, 4L65E, 4L70E, 4L75E Oversized PR Valve (tool not included)

Part Number: TRG-4L60E-PR-OS

Not Yet Reviewed

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Specialty Components, 4L60E, 4L65E, 4L70E Reamer/Guide for Oversize Pressure Regulator Valve

Part Number: TRG-4L60E-PR-TK

Not Yet Reviewed

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Automatic Transmission Reluctor Ring, VSS 40-pulse Sensor, Clamp-on Tone Ring, Hardware, Instructions, for Stock GM Output Shaft, GM, 4L60E, Kit

Part Number: ADD-716073E

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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SHIFT KIT Valve Body Repair Kit, 4T60E 1991-99 SHIFT KIT® Jr. Valve Body Repair Kit

Part Number: TRG-SK4T60E-JR

Not Yet Reviewed

Estimated Ship Date: Apr 23, 2026 if ordered today

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Estimated Ship Date: Apr 23, 2026 if ordered today

4L60EHIGH STALL -2400-2700 RPMS

Part Number: TOS-124L60E

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Axle Assembly, 60 Crate Axle, Bolt-In, High-Pinion, 60.50 in. Overall Length, E-locker, 4.88:1 Ratio, Jeep, Rear, Kit

Part Number: CUR-CE-JR6304E48

Not Yet Reviewed

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JK - EXTREME LP 60 REAR - FULL-FLOAT - 70" WIDTH - 40 SPLINE - ELECTRIC LOCKER - 5.38 GEAR RATIO - 8 ON 6.5" - 9/16" STUDS - JT BRAKES

Part Number: CUR-CE-KR6153E53

Not Yet Reviewed

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LP60 REAR AXLE – JL RUBICON - 68" WIDE SEMI-FLOAT 40-SPLINE - 5X5 PATTERN - ELECTRIC LOCKER, 4.88 GEAR, SATIN BLACK

Part Number: CUR-CE-LR6100E48

Not Yet Reviewed

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LP60 REAR AXLE – JK WRANGLER - 65.375" WIDE SEMI-FLOAT 40-SPLINE - 5X5 PATTERN - ELECTRIC LOCKER - 5.38 GEAR, SATIN BLACK

Part Number: CUR-CE-KR6100E53

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

Axle Assembly, Extreme 60 JL/JT Front Axle, 8X6.5, 9/16" studs, 70" WMS, Eaton Elocker - 5.38 ratio

Part Number: CUR-CE-LF6503E53

Not Yet Reviewed

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Axle Assemblies, Extreme 60 JK Front Axle, 8X6.5, 9/16" studs, 70" WMS, Eaton Elocker - 5.38 ratio

Part Number: CUR-CE-KF6503E53

Not Yet Reviewed

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Boost Valve, .490 in. Diameter, GM, 4L60E/4L65E, Each

Part Number: TCI-374420

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today