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.

Individual Parts

Part Groups

Results 1 - 25 of 311

Spicer Drivetrain Products Builder Axle Front Axle Shafts for 2007-2017 WRANGLER, 2018 WRANGLER JK - 10004054

Chromoly Axle Shaft Assembly Front Right Dana 60 SPL70 Builder Axle Compatible

Part Number: SDH-10004054

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Summit Racing™ Automatic Transmission Thrust Washer Kits SUM-705416

Thrust Washer Kit, Automatic Transmission, GM TH350

Part Number: SUM-705416

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Alloy USA Dana 60 Builders Shafts for 1997-2006 WRANGLER - 10671

Axle, Direct Fit, Front, 4340 Chromoly, 35-Spline, Jeep, Dana 60, Each

Part Number: ALY-10671

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Spicer Drivetrain Products Builder Axle Front Axle Shafts for 2007-2017 WRANGLER, 2018 WRANGLER JK - 10004053

Chromoly Axle Shaft Assembly Front Left Dana 60 SPL70 Builder Axle Compatible

Part Number: SDH-10004053

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Yukon Gear & Axle Bearing Kits for 2011-2018 1500, 2010 RAM 1500 - BK C9.25ZF

Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking t

Part Number: YGA-11125

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

ATI Performance Products Torque Converters ATI408850K

BUILDER KIT - 8 - BOLT TOGETHER - COMPLETE KIT LESS CONVERTER CORE

Part Number: ATI-408850K

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

ATI Performance Products Automatic Transmission Rebuild Components ATI206450

PG, INTERNAL, CONV PRESS DUMP KIT, BUILDER INSTALL ONLY

Part Number: ATI-ATI206450

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Trail-Gear Rock Assault Front Axle Housings 306558-KIT

Axle Housing , Fabricated Front Axle Builder Kit - 8-inch, 1/4-inch Wall

Part Number: TGI-306558-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Front Axle Housings 306559-KIT

Axle Housing , Fabricated Front Axle Builder Kit - 8-inch, 3/8-inch Wall

Part Number: TGI-306559-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Front Axle Housings 306560-KIT

Axle Housing , Fabricated Front Axle Builder Kit - 8-inch, E-Locker 1/4-inch Wall

Part Number: TGI-306560-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Custom Axle Housings 306561-KIT

Axle Housing , Fabricated Front Axle Builder Kit - 8-inch, E-Locker 3/8-inch Wall

Part Number: TGI-306561-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Front Axle Housings 306562-KIT

Axle Housing , Fabricated Front Axle Builder Kit - 8.4-inch, 1/4-inch Wall

Part Number: TGI-306562-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Front Axle Housings 306563-KIT

Axle Housing , Fabricated Front Axle Builder Kit - 8.4-inch, 3/8-inch Wall

Part Number: TGI-306563-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306063-KIT

Axle Housing, 8" Fabricated Housing Builder Kit 1/4" Wall With 79-95 Flanges

Part Number: TGI-306063-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306065-KIT

Axle Housing, 8" Fabricated Housing Builder Kit 1/4" Wall With 05+ Flanges

Part Number: TGI-306065-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306066-KIT

Axle Housing, 8" Elocker Fabricated Housing Builder Kit 1/4" Wall With 79-95 Flanges

Part Number: TGI-306066-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306068-KIT

Axle Housing, 8" Elocker Fabricated Housing Builder Kit 1/4" Wall With 05+ Flanges

Part Number: TGI-306068-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306069-KIT

Axle Housing, 8.4" Fabricated Housing Builder Kit 1/4" Wall With 79-95 Flanges

Part Number: TGI-306069-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306071-KIT

Axle Housing, 8.4" Fabricated Housing Builder Kit 1/4" Wall With 05+ Flanges

Part Number: TGI-306071-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306072-KIT

Axle Housing, 8" Fabricated Housing Builder Kit 3/8" Wall With 79-95 Flanges

Part Number: TGI-306072-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306074-KIT

Axle Housing, 8" Fabricated Housing Builder Kit 3/8" Wall With 05+ Flanges

Part Number: TGI-306074-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306075-KIT

Axle Housing, 8" Elocker Fabricated Housing Builder Kit 3/8" Wall With 79-95 Flanges

Part Number: TGI-306075-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306077-KIT

Axle Housing, 8" Elocker Fabricated Housing Builder Kit 3/8" Wall With 05+ Flanges

Part Number: TGI-306077-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306078-KIT

Axle Housing, 8.4" Fabricated Housing Builder Kit 3/8" Wall With 79-95 Flanges

Part Number: TGI-306078-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Trail-Gear Rock Assault Rear Axle Housings 306080-KIT

Axle Housing, 8.4" Fabricated Housing Builder Kit 3/8" Wall With 05+ Flanges

Part Number: TGI-306080-KIT

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Dana Spicer Drivetrain Products Ring and Pinion Gears 25334X

DIFFERENTIAL RING AND PINION - DANA 60 - BUILDER AXLE COMPATIBLE - 4.88 RATIO

Part Number: SDH-25334X

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

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