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 +

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: Tomorrow

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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: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered 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: Tomorrow

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Longfield Drivetrain Transfer Case Low Range Kits 302882-3-KIT

1991-1998 Suzuki Sidekick 4WD 1991-2001 Geo Tracker 4WD 1991-2001 Chevy Tracker 4WD 1995-1997 Suzuki x90 4WD 1

Part Number: LSA-302882-3-KIT

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 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: Tomorrow

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Sonnax Externally Adjustable Low/Reverse Servo Kits 34914-28K

Servo, Externally Adjustable Low/Reverse, Aluminum, Blue Anodized, GM, 4L80-E, 4L85-E, Kit

Part Number: SOX-34914-28K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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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: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered today

Trail Gear Transfer Case Low Range Kits 303925-3-KIT

Suzuki Jimny JA11/JA12/JA72

Part Number: TGI-303925-3-KIT

Not Yet Reviewed

Estimated Ship Date: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered today

Trail Gear Transfer Case Low Range Kits 304957-3-KIT

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

Part Number: TGI-304957-3-KIT

Not Yet Reviewed

Estimated Ship Date: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered 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: Tomorrow

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Sonnax Externally Adjustable Low/Reverse Servo Kits 34914-20K

Servo, Externally Adjustable Low/Reverse, Aluminum, Blue Anodized, GM, TH400, Kit

Part Number: SOX-34914-20K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Trail Gear Transfer Case Low Range Kits 303924-3-KIT

Suzuki Jimny JA11/JA12/JA71

Part Number: TGI-303924-3-KIT

Not Yet Reviewed

Estimated Ship Date: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 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: Tomorrow

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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: Jun 3, 2026 if ordered today

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Estimated Ship Date: Jun 3, 2026 if ordered today

Sonnax Feed Limit Low Valve Kits 105740-54K

Feed Limit Low Valve Kit

Part Number: SOX-105740-54K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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DRP Performance Premium Low Drag Bearing Kits 007 10581BR

Wheel Bearings, Premium Low Drag, Steel Roller Bearing, Bearing Races, Front, Rear, Kit

Part Number: DPR-00710581BR

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Low Range Off-Road Wheel Bearings TAX-RBKU

Wheel Bearing, Rear Axle, Outer, Toyota, Pickup, 4Runner, Kit

Part Number: LRO-TAX-RBKU

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

DRP Performance Premium Low Drag Bearing Kits 007 10581

Wheel Bearings, Premium Low Drag, Steel Roller Bearing, Front, Rear, Kit

Part Number: DPR-00710581

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Low Range Off-Road German (F.A.G.) Toyota King Pin Trunnion Bearings 140192-1

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

Part Number: LRO-140192-1

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Low Range Off-Road Clutch Kits for 1986-1995 SAMURAI - STM-HC

Clutch Kit, Stage 3, Ceramic, 6-Paddle, Sprung Hub, Diaphragm, Suzuki, Samurai, Kit

Part Number: LRO-STM-HC

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

DRP Performance Premium Low Drag Bearing Kits for 1970-1973 MUSTANG, 1974-1978 MUSTANG II, 1971-1980 PINTO - 007 10531K

Wheel Bearing Spacer, Low Drag, Bearing, Seal, Front, Mustang II/Pinto Spindle, Steel, Black, Ford, Kit

Part Number: DPR-00710531K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sikky Manufacturing Low-Profile T56 Reverse Lamp Sensors RS-T56

Low Profile Reverse Lamp Sensor for GM T56 Transmission

Part Number: SKM-RS-T56

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Low Range Off-Road Front Axle Truss With Gusset Kits for 1986-1995 SAMURAI - SAX-FGK

Axle Housing Brace, Front Axle Truss with Gusset Kit, Steel, Natural, LR Logo, Welding Required, Suzuki, Each

Part Number: LRO-SAX-FGK

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

DRP Performance Premium Low Drag Bearing Race Kits 007 10553

Wheel Bearing Races, Low Drag, Premium, Wide 5, Steel, Kit

Part Number: DPR-00710553

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Low Range Off-Road CV Boot Kits LROR-309391

CV Boot Kit, Neoprene, Front Inner, Chevrolet, Geo, Suzuki, Kit

Part Number: LRO-LROR-309391

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

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