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 140

Hooker Transmission Crossmember Extension Brackets BHS5181

Transmission Crossmember Extension Bracket, Bolt-on, Steel, Black, Buick, Chevy, GMC, Oldsmobile, Pontiac, LS, 10L80, 10L90, Each

Part Number: HOK-BHS5181

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Advance Adapters Jeep Crossmember Mount Kits for 1987-1995 WRANGLER - 716008

Advance Adapters Jeep Crossmember Mount Kits for 1987-1995 WRANGLER - 716008

Transfer Case Mounts, NP231, Universal, Pair

Part Number: ADD-716008

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1967-1969 CAMARO, FIREBIRD - EFKF1TKX

Manual Transmission and Installation Kit Combo, EasyFit Tremec TKX, 5 Gears, 1.125 in. - 26-spline, 31-spline Output, Crossmember, Chevy, Pontiac, Kit

Part Number: IST-EFKF1TKX

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1963-1972 C10 PICKUP - EFKC10TKX

Manual Transmission and Installation Kit Combo, EasyFit Tremec TKX, 5 Gears, 1.125 in. - 26-spline, 31-spline Output, Crossmember, Mount, Chevy, Kit

Part Number: IST-EFKC10TKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1965-1966 MUSTANG - EFKM1TKX

Manual Transmission and Installation Kit Combo, EasyFit Tremec TKX, 5 Gears, 1.125 in. - 26-spline, 31-spline Output, Crossmember, Mount, Ford, Kit

Part Number: IST-EFKM1TKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1975-1981 CAMARO, FIREBIRD - EFKF2CLTKX

Manual Transmission and Installation Kit Combo, EasyFit Tremec TKX, 5 Gears, 1.125 in. - 26-spline, 31-spline Output, Crossmember, Chevy, Pontiac, Kit

Part Number: IST-EFKF2CLTKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1967-1970 MUSTANG - EFKM23TKX

Manual Transmission and Installation Kit Combo, EasyFit Tremec TKX, 5 Gears, 1.125 in. - 26-spline, 31-spline Output, Crossmember, Mount, Ford, Kit

Part Number: IST-EFKM23TKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1968-1979 CORVETTE - EFKC3ETKX

Manual Transmission and Installation Kit Combo, EasyFit Tremec TKX, 5 Gears, 1.125 in. - 26-spline, 31-spline Output, Crossmember, Mount, Chevy, Kit

Part Number: IST-EFKC3ETKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

California Pony Cars T-5 Conversion Installation Kits for 1964-1966 MUSTANG - TRA-656-532

Manual Transmission Installation Kit, T-5 Conversion, Crossmember Included, Yoke Included, Ford, Mustang, Kit

Part Number: CPO-TRA-656-532

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits EFKA1TKX

Manual Transmission and Installation Kit Combo, EasyFit Tremec TKX, 5 Gears, 1.125 in. - 26-spline, 31-spline Output, Mount, Buick, Chevy, Olds, Kit

Part Number: IST-EFKA1TKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Advance Adapters Jeep AX15 Transmission Bellhousing Adapters for 1989-1993 CHEROKEE, WRANGLER, 1989-1992 COMANCHE - 712590-IR

Bellhousing, External Hydraulic Upgrade, Release Bearing and Lever, Slave Cylinder, Bearing Retainer, Hardware, Jeep, AX15, Kit

Part Number: ADD-712590-IR

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Advance Adapters Mopar NV4500 Transmission Bell Housing Adapters for 1994-2003 RAM 2500, RAM 3500 - 712586A

Bellhousing Adapter, Aluminum, Natural, Mopar NV4500, Dodge, 5.9L Diesel, Kit

Part Number: ADD-712586A

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1968-1972 CHEVELLE - EFKA2TKX

Silver Sport EasyFit TREMEC TKX Install Kit ONLY 68-72 GM Chevelle / Malibu

Part Number: IST-EFKA2TKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Trail-Gear Trail-Link 3-Link Tacoma Solid Axle Swap C Kits for 1996-2004 TACOMA - 301008-1-KIT

Trail-Link 3, Front SAS Kit "C", Tacoma, 3.4L, DETROIT, 4.88, 1996-2004

Part Number: TGI-301008-1-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

Silver Sport EasyFit Tremec TKX Transmission Kits EFKMETKX

Silver Sport EasyFit TREMEC TKX Install Kit Mopar 70-74 E-Body, 71-74 B-Body

Part Number: IST-EFKMETKX

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

Silver Sport EasyFit Tremec TKX Transmission Kits for 1980-1982 CORVETTE - EFKC3LTKX

Silver Sport EasyFit TREMEC TKX Install Kit 80-82 Corvette

Part Number: IST-EFKC3LTKX

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

Silver Sport EasyFit Tremec TKX Transmission Kits for 1955-1962 CORVETTE - EFKC1TKX

Silver Sport EasyFit TREMEC TKX Install Kit 55-62 Corvette

Part Number: IST-EFKC1TKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1970-1974 CAMARO, FIREBIRD - EFKF2CETKX

Silver Sport EasyFit TREMEC TKX Install Kit 70-74 GM F-Body w/console

Part Number: IST-EFKF2CETKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Silver Sport EasyFit Tremec TKX Transmission Kits for 1955-1957 BEL AIR - EFKBFOTKX

Manual Transmission and Installation Kit Combo, EasyFit Tremec TKX, 5 Gears, 1.125 in. - 26-spline, 31-spline Output, Shifter, Mount, Chevrolet, Kit

Part Number: IST-EFKBFOTKX

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Tremec Magnum XL 6-Speed Transmissions TUET18131

Manual Transmission, Magnum XL, 6-Speed, 1 1/8 in. 26-Spline, 2.66 First Gear, 0.63 Overdrive, Each

Part Number: REM-TUET18131

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Silver Sport EasyFit Tremec TKX Transmission Kits for 1967-1976 DART, VALIANT, 1970-1976 DUSTER - EFKMA2TKX

Silver Sport EasyFit TREMEC TKX Install Kit 67-76 Mopar A-Body

Part Number: IST-EFKMA2TKX

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

Tremec Magnum XL 6-Speed Transmissions TUET18132

Manual Transmission, Magnum XL, 6-Speed, 1 1/8 in. 26-Spline, 2.97 First Gear, 0.63 Overdrive, Each

Part Number: REM-TUET18132

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Hooker Blackheart Transmission Adapter Plates BHS565

Transmission Adapter Plates, Steel, Black Painted, T-56 Transmission, Chevy, GMT-400 Platform, Gen III/IV LS Engines, Each

Part Number: HOK-BHS565

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

Trail-Gear Transfer Case Mounts for 1985-1995 4RUNNER, 1979-1995 PICKUP, 1995 TACOMA - 105003-1

Transfer Case Mount, Toyota

Part Number: TGI-105003-1

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

Silver Sport EasyFit Tremec TKX Transmission Kits for 1963-1964 CHEVY II, 1962-1964 SKYLARK - EFKX1ETKX

Silver Sport EasyFit TREMEC TKX Install Kit 62-64 GM X-Body

Part Number: IST-EFKX1ETKX

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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