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 2000 +

TeraFlex 2WD Low-Range Kits for 1987-1997 CHEROKEE, 1989-1992 COMANCHE, 1993-1995 GRAND CHEROKEE - 2204000

Transfer Case, Low-Range, 2WD, New Process 231J, Jeep, Kit

Part Number: TMI-2204000

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Nov 24, 2025 if ordered today

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Estimated Ship Date: Nov 24, 2025 if ordered today

Trail-Gear Reduction Gears for 1986-1995 SAMURAI - 105004-3-KIT

Reduction Gears, 6.5 T-Case Gear, Suzuki Samurai, Kit

Part Number: TGI-105004-3-KIT

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Trail-Gear Transfer Case Gear Sets for 1986-1995 SAMURAI - 303761-3-KIT

Samurai 4.90:1 T-Case Gear Set

Part Number: TGI-303761-3-KIT

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Trail-Gear Reduction Gears 105000-1-KIT

Trail-Creeper T-Case Reduction Gear Kit, 4.7 Creeper Gear, 21 Spline, Toyota

Part Number: TGI-105000-1-KIT

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Trail-Gear Reduction Gears 105001-1-KIT

Trail-Creeper T-Case Reduction Gear Kit, 4.7 Creeper Gear, 23 Spline, Toyota

Part Number: TGI-105001-1-KIT

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Trail-Gear Reduction Gears for 1986-1995 SAMURAI - 303760-3-KIT

Transfer Case Reduction Gear, 4.16: 1, Suzuki, Samurai, Kit

Part Number: TGI-303760-3-KIT

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Trail-Gear Reduction Gears for 1990-2007 LAND CRUISER, 1996-1997 LX450, 1998-2007 LX470 - 303846-1-KIT

Reduction Gears, 3.116:1 T-Case Gears, Toyota, Lexus, Kit

Part Number: TGI-303846-1-KIT

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Trail-Gear Reduction Gears 302882-3-KIT

Transfer Case Reduction Gear, 4.24: 1, Suzuki, Samurai, Kit

Part Number: TGI-302882-3-KIT

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Trail Gear Transfer Case Low Range Kits 304956-3-KIT

Transfer Case Components, Suzuki Jimny Transfer Case Gear Set, Chain Drive, Manual (Planetary Only)

Part Number: TGI-304956-3-KIT

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Trail Gear Transfer Case Low Range Kits 304088-3-KIT

T-Case Gear Set

Part Number: TGI-304088-3-KIT

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Trail Gear Transfer Case Low Range Kits 304087-3-KIT

Transfer Case Components, Suzuki Jimny Transfer Case Gear Set, Chain Drive, Manual (Full Gear Set)

Part Number: TGI-304087-3-KIT

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Advance Adapters Low-Range Gear Sets 420315

Transfer Case Low Range Gears, 3.15:1 Ratio, Dana 18, Dana 20, International, Jeep, Kit

Part Number: ADD-420315

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

TeraFlex Transfer Case Low Range Kits 2266900

2WD LOW RANGE KIT 241OR

Part Number: TMI-2266900

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Advance Adapters Transfer Case Low Range Kits 48-4900

GEAR SET-SUZUKI 4.90 LOW

Part Number: ADD-48-4900

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Advance Adapters Transfer Case Low Range Kits 48-6400

GEAR SET-SUZUKI 6.40 LOW

Part Number: ADD-48-6400

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Trunnion Bearing, Toyota King Pin, Toyota, Truck, Each

Part Number: LRO-140192-1

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

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