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 126

Hughes Performance Competition 40 Series 4,000 Stall Torque Converter 41-40

Hughes Performance Competition 40 Series 4,000 Stall Torque Converter 41-40

Torque Converter, Competition 40 Series, 26-Spline, Ford, C-4, Each

Part Number: HUP-41-40

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

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Estimated Ship Date: Feb 13, 2026 if ordered today

GMB U-Joints 230-4140

Universal Joint

Part Number: GMB-230-4140

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Quadboss Wheel and Carrier Bearing and Seal Kits 414090

Wheel Bearing and Seal, 1-Wheel, Polaris, Kit

Part Number: QDB-41-4090

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Quadboss Differential Carrier Bearings 414045

QBOSS REAR CARRIER BEARING

Part Number: QDB-41-4045

Not Yet Reviewed

Estimated Ship Date: Feb 4, 2026 if ordered today

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Estimated Ship Date: Feb 4, 2026 if ordered today

Quadboss Differential Bearing and Seal Kits 414081

Powersports Drivetrain Bearing and Seal Kits, Differential, Steel, Bombardier, Can-Am, Kit

Part Number: QDB-41-4081

Not Yet Reviewed

Estimated Ship Date: Feb 4, 2026 if ordered today

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Estimated Ship Date: Feb 4, 2026 if ordered today

Quadboss Differential Bearing and Seal Kits 414082

Powersports Drivetrain Bearing and Seal Kits, Differential, Steel, Can-Am, Rear, Kit

Part Number: QDB-41-4082

Not Yet Reviewed

Estimated Ship Date: Feb 4, 2026 if ordered today

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Estimated Ship Date: Feb 4, 2026 if ordered today

Quadboss Differential Seal Kits 414096

Differential Seals, Rubber, Bombardier, Can-Am, Kit

Part Number: QDB-41-4096

Not Yet Reviewed

Estimated Ship Date: Feb 4, 2026 if ordered today

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Estimated Ship Date: Feb 4, 2026 if ordered today

Hughes Performance Competition 40 Series 4,000 Stall Torque Converter 41-40HD

Torque Converter, Competition 40 Series, 26-Spline, Ford, C-4, Each

Part Number: HUP-41-40HD

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

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Estimated Ship Date: Feb 13, 2026 if ordered today

Quadboss Differential Seal Kits 414094

Differential Bearing and Seal, Arctic Cat, Kymco, Kit

Part Number: QDB-41-4094

Not Yet Reviewed

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

Quadboss Carrier Bearing Upgrade Kits 414046

Bearing Upgrade, Carrier, Yamaha, Rear, Kit

Part Number: QDB-41-4046

Not Yet Reviewed

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

Quadboss Differential Bearing and Seal Kits 414083

Differential Bearing and Seal, for use on Honda®, ATV, Rear, Kit

Part Number: QDB-41-4083

Not Yet Reviewed

Estimated Ship Date: Feb 6, 2026 if ordered today

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Estimated Ship Date: Feb 6, 2026 if ordered today

LuK Clutch Replacement Clutch Forks 4140205100

Clutch Fork, OE Replacement, Steel, Black, Dodge, RAM, Each

Part Number: LUK-LF9923

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Sonnax Heavy-Duty Automatic Transmission Clutch Hubs 74574-HD

Automatic Transmission Clutch Hub, Heavy-Duty, Overrun Position, Forged 4140 Steel, GM, 4L60, 4L60E, 4L65E, 4L70E, Each

Part Number: SOX-74574HD

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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TCI Forged Steel Clutch Hubs 228300

Clutch Hub, 4140 Steel, GM TH400, 4L80E, Each

Part Number: TCI-228300

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Motive Gear Ten Factory Axle Shafts for 1976-1982 CJ5, CJ7, 1981-1982 SCRAMBLER - MG22125

Axle Shafts, Direct Fit, 4140 Chromoly, 29-Spline, 26.250 in./23.250 in. Length, Jeep, Kit

Part Number: MGR-MG22125

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Alloy USA Grande Rear Axle Shafts 21109

Axle, Direct Fit, 4140 Chromoly, 28-Spline, Jeep, Dana 35, Each

Part Number: ALY-21109

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Alloy USA Performance Rear Axle Shafts for 1976-1979 CJ7 - 21104

Axle Shaft, Rear Passenger Side, 29-spline Inner, Bolt-in, 4140 Chromoly, 19.00 in. Length, AMC Model 20, Jeep

Part Number: ALY-21104

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Alloy USA Performance Rear Axle Shafts for 1976-1979 CJ7 - 21105

Axle Shaft, Rear Driver Side, 29-spline Inner, Bolt-in, 4140 Chromoly, 30.438 in. Length, AMC Model 20, Jeep

Part Number: ALY-21105

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Alloy USA Performance Rear Axle Shafts for 2007-2018 WRANGLER - 21204C

Axle, Direct Fit, Rear, 4140 Chromoly, 30 Spline, Jeep, Dana 44, Each

Part Number: ALY-21204C

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Motive Gear Ten Factory Axle Shafts for 1993-1997 CAMARO, 1990-1996 FIREBIRD - MG22104

Axle Shafts, Direct Fit, Rear, 4140 Chromoly, Chevy, 28-Spline, 32.00 Length, Kit

Part Number: MGR-MG22104

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Motive Gear Ten Factory Axle Shafts for 1983 CJ5, 1983-1986 CJ7, 1983-1985 SCRAMBLER - MG22126

Axle Shafts, Direct Fit, 4140 Chromoly, 29-Spline, 28.310 in./25.310 in. Length, Jeep, Kit

Part Number: MGR-MG22126

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Motive Gear Ten Factory Axle Shafts for 1987-2006 WRANGLER - MG22135

Axle Shaft, Ten Factory, Rear, Dana 44, 4140 Chromoly, Jeep, Kit

Part Number: MGR-MG22135

3.86 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Motive Gear Ten Factory Axle Shafts for 2007-2018 WRANGLER - MG22157

Axle Shaft, Ten Factory, Rear, Dana 44, 4140 Chromoly, Jeep, Kit

Part Number: MGR-MG22157

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Motive Gear Ten Factory Driveshafts for 1997-2006 WRANGLER - TFF1310-2148

Driveshaft, 2-Piece, Front, 4140 Chromoly, Jeep, Each

Part Number: MGR-TFF1310-2148

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Yukon Gear & Axle Cut-to-Fit Axle Shafts YA WD44-30-32.0

Axle Shaft, Cut to Fit, Rear, 4140 Chromoly, 30 Spline, 32.000 in. Length, Bolt In, for 2.75 in. Brake Offset, Dana 44, Jeep, Each

Part Number: YGA-21703

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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