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 +

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: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered 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: Feb 4, 2026 if ordered today

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Estimated Ship Date: Feb 4, 2026 if ordered 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: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 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: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 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: Feb 4, 2026 if ordered today

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Estimated Ship Date: Feb 4, 2026 if ordered today

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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Low Range Off-Road Ultimate E-Locker Wiring Harness Kits TDI-ELWH-LP-R

Wiring Harness, Ultimate E-Locker, Low Pinion Style, Rear, Toyota, Each

Part Number: LRO-TDIELWHLPR

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Sonnax Feed Limit Low Valve Kits 105740-54K

Feed Limit Low Valve Kit

Part Number: SOX-105740-54K

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Low Range Off-Road E-Locker Electrical Switches DIY-ELSR

Electrical Switch, E-Locker Switch, Rocker, Momentary On-Off, Plastic, Black, Labeled, Replacement Rear Switch for Low Range Off-Road E-lockers, Each

Part Number: LRO-DIY-ELSR

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Low Range Off-Road End of Story Transfer Case Cradles for 1988-1995 SAMURAI - STC-EOS

Transfer Case Mounts, End Of Story Transfer Case Cradles, Suzuki, Kit

Part Number: LRO-STC-EOS

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Low Range Off-Road Suzuki Samurai Sloppy Shifter Fix Kits for 1986-1989 SAMURAI - SDT-SSK86-89N

Manual Transmission Shifter Bushings and Clips, Sloppy Shifter Fix Kit, Bushing and Bolts for Transmission and Transfer Case, Nylatron, Kit

Part Number: LRO-S0033

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

DRP Performance Premium Low Drag Bearing Kits for 1967-1969 CAMARO, 1967-1978 FIREBIRD - 007 10523SK-BR

Wheel Bearing Spacer, Low Drag, Bearing, Race, Seal, Strange Hub, Steel, Black, Chevrolet, Pontiac, Kit

Part Number: DPR-00710523SKBR

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Low Range Off-Road Differential Master Rebuild Kits for 1986-1995 SAMURAI - SAX-DMR

Ring and Pinion Installation Kit, Master Rebuild Kit, Suzuki, Front, Rear, Kit

Part Number: LRO-SAX-DMR

Not Yet Reviewed

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

DRP Performance Premium Low Drag Bearing Kits 007 10521SK

Wheel Bearing Spacer, Low Drag, #2 GM Metric Hub, Front, Bearing, Seal, Steel, Black, Kit

Part Number: DPR-00710521SK

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

DRP Performance Premium Low Drag Bearing Kits for 1979-1993 MUSTANG - 007 10534K

Wheel Bearing Spacer, Low Drag, Front, Bearing, Seal, Steel, Black, Ford, L4, L6, V6, Each

Part Number: DPR-00710534K

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

DRP Performance Premium Low Drag Bearing Kits for 1979-1993 MUSTANG - 007 10534K-V8

Wheel Bearing Spacer, Low Drag, Front, Bearing, Seal, Steel, Black, Ford, V8, Each

Part Number: DPR-00710534K-V8

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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