American Powertrain Parts and Accessories

When it’s time to upgrade your transmission, turn to the torque transfer pros at American Powertrain! They specialize in Tremec 5- and 6-speed gearboxes and also...

When it’s time to upgrade your transmission, turn to the torque transfer pros at American Powertrain! They specialize in Tremec 5- and 6-speed gearboxes and also build a full line of accessories and installation kits designed to make your next swap go like clockwork. Summit Racing offers American Powertrain transmissions, transmission installation kits, crossmembers, flywheels, clutch pedal assemblies, and more—everything you need to convert your muscle car to modern drivetrain technology. Make the shift to American Powertrain—shop now!

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Results 1 - 25 of 541

American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits for 1967-1969 CAMARO, FIREBIRD - COGM-F1FX

Transmission Combo, ProFit, Tremec TKX, 5-Speed, 2.87:1 First Gear, 0.68:1 Fifth Gear, GM, F-Body, 1967-69, Kit

Part Number: AWR-COGM-F1FX

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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American Powertrain Hydramax Hydraulic Throwout Bearings CAGM-30001P

Throwout Bearing, Hydraulic, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: AWR-CAGM30001P

3.8 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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American Powertrain Science Friction 180-Tooth Flywheel FWFO-10013

SCIENCE FRICTION Billet Steel 180T Flywheel for 351M/400M.

Part Number: AWR-FWFO10013

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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American Powertrain X-Factor Crossmembers XFGM-10101M

Transmission Crossmember, X-Factor, Steel, Black Powdercoated, Manual, Automatic, Chevy, Pontiac, Each

Part Number: AWR-XFGM10101M

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits for 1963-1967 CORVETTE - COGM-C2FX

Transmission Combo, ProFit, Tremec TKX, 5-Speed, 2.87:1 First Gear, 0.68:1 Fifth Gear, Chevy, Corvette, 1963-67, Kit

Part Number: AWR-COGM-C2FX

Not Yet Reviewed

Estimated Ship Date: Sep 30, 2025 if ordered today

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Estimated Ship Date: Sep 30, 2025 if ordered today

American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits for 1969-1974 NOVA, 1971-1974 VENTURA - COGM-X2FX

Transmission Combo, ProFit, Tremec TKX, 5-Speed, 2.87:1 First Gear, 0.68:1 Fifth Gear, Chevy, Pontiac, Nova, Ventura, 1968-74, Kit

Part Number: AWR-COGM-X2FX

Not Yet Reviewed

Estimated Ship Date: Sep 30, 2025 if ordered today

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Estimated Ship Date: Sep 30, 2025 if ordered today

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: Tomorrow

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American Powertrain Hydramax Master Cylinder Kits HMGM-30001G

Clutch Master Cylinder, Hydramax, Cast Aluminum, Black, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: AWR-HMGM30001SR

2.88 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain Manual Transmission Bellhousings BHCV-10004K

Bellhousings, New, Aluminum, Natural, Manual, Chevrolet, LS III/IV, Each

Part Number: AWR-BHCV-10004K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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American Powertrain Hydramax Hydraulic Clutch Release Systems HMCH01101G

Throwout Bearing Conversion, Hydraulic, Hydramax, Mopar, A-833, 23-Spline Input Shaft, Kit

Part Number: AWR-HMCH01101G

3.8 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain Manual Transmission Bellhousings BHCV-10002K

Bellhousings, New, Aluminum, Natural, Manual, Chevrolet, Each

Part Number: AWR-BHCV-10002K

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain ISO-X Transmission Mounts ISGM-20002L

Transmission Mount, ISO-X, Low Profile, Polymer, Black, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: AWR-ISGM-20002L

4.18 out of 5 stars ( 11 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits for 1970-1974 CAMARO, FIREBIRD - COGM-F2FX

Transmission Combo, ProFit, Tremec TKX, 5-Speed, 2.87:1 First Gear, 0.68:1 Fifth Gear, GM, F-Body, 1970-74, Kit

Part Number: AWR-COGM-F2FX

Not Yet Reviewed

Estimated Ship Date: Sep 30, 2025 if ordered today

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Estimated Ship Date: Sep 30, 2025 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems for 1965-1966 MUSTANG - HMFO02503G

Throwout Bearing Conversion, Hydraulic, Hydramax, Ford, Toploader, 1 1/16 in. x 10-Spline, Kit

Part Number: AWR-HMFO02503G

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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American Powertrain Hydramax Hydraulic Clutch Release Systems HMGM01201G

Throwout Bearing Conversion, Hydraulic, Hydramax, GM, Magnum/GM LS T-56/Viper T-56, Kit

Part Number: AWR-HMGM01201SR

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain X-Factor Crossmembers for 1965-1973 MUSTANG - XFFO-10101

Transmission Crossmember, X-Factor, Steel, Black Powdercoated, Ford, Each

Part Number: AWR-XFFO10101

2.85 out of 5 stars ( 13 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain Reverse Lockout Modules ELUN-10013

Reverse Lockout Module, Ford/Chevy T-56, Tremec Magnum, 6-Speed, Each

Part Number: AWR-ELUN-10013

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain Hydramax Hydraulic Clutch Release Systems HMGM40007

Hydraulic Throwout Bearing Conversion Kits, Hydramax Hydraulic Clutch Release Systems, Slave Cylinder, Remote Reservoir, Muncie, Tremec, Chevy, Kit

Part Number: AWR-HMGM40007

Not Yet Reviewed

Estimated Ship Date: Sep 30, 2025 if ordered today

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Estimated Ship Date: Sep 30, 2025 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems HMGM40020

Throwout Bearing Conversion, Hydraulic, Hydramax, Chevrolet, Buick, Pontiac, Oldsmobile, Kit

Part Number: AWR-HMGM40020

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Sep 30, 2025 if ordered today

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Estimated Ship Date: Sep 30, 2025 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems HMGM40003

Hydraulic Clutch , 5-Speed Hydramax Hydraulic Clutch kit for 1960-66 Chevy C10

Part Number: AWR-HMGM40003

Not Yet Reviewed

Estimated Ship Date: Sep 30, 2025 if ordered today

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Estimated Ship Date: Sep 30, 2025 if ordered today

American Powertrain Hydraulic Throwout Bearing Conversion Kits HMFO30009G

64-66 Ford Mustang Hydraulic kit for 5-speed 4-speed and 6-speed..Kit Includes:..Concentric Slave Bearing - Pre-bled, Dual line, double width seals..P

Part Number: AWR-HMFO30009G

Not Yet Reviewed

Estimated Ship Date: Sep 30, 2025 if ordered today