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.

Showing In Stock Items. Show All 187 Items.

Individual Parts

Part Groups

Results 1 - 25 of 134

The Right Stuff Axle Shafts, Direct Fit ZA05

5-Lug Axles **Convert 4 lug to 5 lug**

Part Number: RSD-ZA05

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 27, 2026 if ordered today

Trick Flow® C-4 Pan Fill Conversion Kits TFS-1006-PFK

Trick Flow® C-4 Pan Fill Conversion Kits TFS-1006-PFK

Transmission Dipstick Conversion, Brass, 1/2 in. NPT, Ford, Lincoln, Mercury, C-4, Each

Part Number: TFS-1006-PFK

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

American Powertrain Hydraulic Throwout Bearing Conversion Kits HMGM40016A

70-81 GM F-body Camaro/Firebird for cars converting from auto to manual only Hydraulic kit for 5-speed and GM 4-speed. TKX/TKO/Muncie..Kit Includes:..

Part Number: AWR-HMGM40016A

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 6, 2026 if ordered today

American Powertrain Hydraulic Throwout Bearing Conversion Kits HMGM40076A

1969-70 Chevy Impala for converting from auto to manual only Hydraulic kit for 5-speed and GM 4-speed. TKX/TKO/Muncie..Kit Includes:..Concentric Slave

Part Number: AWR-HMGM40076A

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 6, 2026 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems for 1979-1993 MUSTANG - HMFO30004G

Throwout Bearing Conversion, Hydraulic, Hydramax, Ford, Tremec TKO/TKX/T-5/Ford 6-Speed, Kit

Part Number: AWR-HMFO30004G

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 6, 2026 if ordered today

Hurst Axle Conversion Kits 02-121

Axle Conversion, Rear, 5 x 5.00 in. Bolt Circle, Chevy, GMC, Kit

Part Number: HUU-02-121

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Hurst Axle Conversion Kits 02-110

Axle Conversion, Rear, 5 x 5.00 in. Bolt Circle, Chevy, GMC, Kit

Part Number: HUU-02-110

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 27, 2026 if ordered today

Hurst Axle Conversions With Limited Slip Differentials 02-123

Axle Conversion, Rear, With Limited Slip Differential, 3.73 and Up ratio, 5 x 5.00 in. Bolt Circle, GM, Kit

Part Number: HUU-02-123

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 27, 2026 if ordered today

Hurst Conversion Axles 02-119

Axle Conversion, Rear, 5 x 5.00 in. Bolt Circle, GM, Each

Part Number: HUU-02-119

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 27, 2026 if ordered today

Hurst Axle Conversions With Limited Slip Differentials 02-122

Axle Conversion, Rear, With Limited Slip Differential, 3.42 and Down ratio, 5 x 5.00 in. Bolt Circle, GM, Kit

Part Number: HUU-02-122

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

...Loading

Estimated Ship Date: Feb 27, 2026 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems HMGM01101G

Throwout Bearing Conversion, Hydraulic, Hydramax, GM, TKO/TKX/Muncie/Saginaw/Richmond/Lenco, Kit

Part Number: AWR-HMGM01101SR

3.9 out of 5 stars ( 41 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Detroit Speed Wheel Hub Conversion Kits 030603DS

Wheel Hubs, Black, 6-Lug to 5-Lug, Chevrolet, GMC, Pair.

Part Number: DSR-030603DS

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Classic Performance Rear Axle Conversion Kits 70RACK

Axle Shafts, Rear Axle Conversion, 6-lug To 5-lug, C-clip, 5 x 5.00 in. Wheel Stud Pattern, Chevy, GMC, Kit

Part Number: CLP-70RACK

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

American Powertrain Hydramax Hydraulic Clutch Release Systems for 1965-1966 MUSTANG - HMFO02501G

Throwout Bearing Conversion, Hydraulic, Hydramax, Ford, TKO/Magnum/T-56/Richmond/TR 3650, Kit

Part Number: AWR-HMFO02501G

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Classic Performance Rear Axle Conversion Kits for 1965-1969 C10 PICKUP, K10 PICKUP - 6569RACK

Axle Conversion, Rear, 5 x 5.00 in. Bolt Circle, Chevy, Pair

Part Number: CLP-6569RACK

4.93 out of 5 stars ( 30 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

American Powertrain Hydramax Hydraulic Clutch Release Systems for 1967-1970 MUSTANG - HMFO02601G

Throwout Bearing Conversion, Hydraulic, Hydramax, Ford, TKO/Magnum/T-56/Richmond/TR 3650, Kit

Part Number: AWR-HMFO02601G

3.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Classic Performance Rear Axle Conversion Kits for 1963-1969 C10 PICKUP, K10 PICKUP - 6369RAC-5

Axle Conversion, Rear, 5 x 5.00 in. Bolt Circle, Chevy, Pair

Part Number: CLP-6369RAC-5

4.56 out of 5 stars ( 18 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

American Powertrain Hydramax Hydraulic Clutch Release Systems for 1968-1972 CHEVELLE - HMGM40012

Throwout Bearing Conversion, Hydraulic, Hydramax, Chevrolet, Kit

Part Number: AWR-HMGM40012

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 6, 2026 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems HMFO01101G

Throwout Bearing Conversion, Hydraulic, Hydramax, Ford, Tremec, Kit

Part Number: AWR-HMFO01101G

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 6, 2026 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems HMFO01101SR

Throwout Bearing Conversion, Hydraulic, Hydramax, Ford, TKO/Magnum/T-56/Richmond/TR 3650, Kit

Part Number: AWR-HMFO-01101SR

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

American Powertrain Hydramax Hydraulic Clutch Release Systems HMGM01104G

Throwout Bearing Conversion, Hydraulic, Hydramax, GM, Tremec, Richmond, Muncie, Saginaw, Doug Nash, Kit

Part Number: AWR-HMGM01104G

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 6, 2026 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems for 1971-1973 MUSTANG - HMFO02101G

Throwout Bearing Conversion, Hydraulic, Hydramax, Ford, TKO/Magnum/T-56/Richmond/TR 3650, Kit

Part Number: AWR-HMFO02101G

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 6, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 6, 2026 if ordered today

Classic Performance Rear Axle Conversion Kits for 1970 C10 PICKUP, K10 PICKUP - 70RAC-5

Axle Shafts, Rear Axle Conversion, C-clip Type, Steel, GM 8.875 in. Truck, Chevy, Pair

Part Number: CLP-70RAC-5

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Yukon Gear & Axle Differential and Axle Combo Kits for 1999-2004 MUSTANG - YA FMUST-4-31

'99-'04 Mustang Axle kit, 31 Spline, 5 Lug Axles w/ DuraGrip positraction

Part Number: YGA-21559

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 6, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 6, 2026 if ordered today

UMI Performance 1978-88 GM G-Body Brake Conversion Kits 304647

Brake hub, Aluminum, C5/C6 Brake Conversion Hubs, Bearings, Brackets, Kit

Part Number: UPI-304647

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

...Loading

Estimated Ship Date: Monday 2/9/2026

Page 1 of 6
Next