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 542

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

4.05 out of 5 stars ( 37 )

Estimated Ship Date: Today

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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: Today

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American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits COFO-M1EX

Transmission Combo, ProFit, Tremec TKX, 5-Speed, 2.87:1 First Gear, 0.68:1 Fifth Gear, Ford, Cougar, Mustang 1965-73, Kit

Part Number: AWR-COFO-M1EX

Not Yet Reviewed

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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

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American Powertrain Hydramax Hydraulic Throwout Bearings CAFO-30005HM

Throwout Bearing, Hydraulic, 3650, T-45, T-5, T-56, Tremec TKO, Ford, Each

Part Number: AWR-CAFO30005HM

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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American Powertrain Hydramax Hydraulic Clutch Release Systems HMFO02601G

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

Part Number: AWR-HMFO02601G

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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American Powertrain Manual Transmission Bellhousings BHCV-10002K

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

Part Number: AWR-BHCV-10002K

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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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: Today

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American Powertrain Hydramax Hydraulic Clutch Release Systems HMFO02603G

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

Part Number: AWR-HMFO02603G

2.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

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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: Today

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American Powertrain Hydramax Hydraulic Clutch Release Systems HMFO02503G

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

Part Number: AWR-HMFO02503G

Not Yet Reviewed

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American Powertrain Hydramax Hydraulic Clutch Release Systems 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: Today

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American Powertrain Transmission Yokes DSUN-10001

Yoke, Nodular Iron, 1330, Tremec, TKO's, Magnum's, Each

Part Number: AWR-DSUN-10001

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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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: Today

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American Powertrain Hydramax Hydraulic Clutch Release Systems HMGM40015

Hydraulic Throwout Bearing Conversion Kits, Hydramax Hydraulic Clutch Release Systems, Blue Aluminum Slave Cylinder, Reservoir, Chevy, Pontiac, Kit

Part Number: AWR-HMGM40015

Not Yet Reviewed

Estimated Ship Date: Mar 24, 2025 if ordered today

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Estimated Ship Date: Mar 24, 2025 if ordered today

American Powertrain X-Factor Crossmembers XFGM-10101M

Transmission Crossmember, X-Factor, Aluminum, Black Powdercoated, Tremec TKO, Chevy, Pontiac, Each

Part Number: AWR-XFGM10101M

4.56 out of 5 stars ( 9 )

Estimated Ship Date: Today

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American Powertrain Transmission Tunnels SMGM-10001

Patch Panel, Transmission Tunnel, Steel, Natural, GM, A-Body, Each

Part Number: AWR-SMGM10001

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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American Powertrain Transmission Rear Seals TRUN-10001

Seal, Transmission Rear Seal, Dust Seal, TKO, Each

Part Number: AWR-TRUN-10001

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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American Powertrain Speedometer Cable Plugs SPUN-10004B

Transmission Speedometer Plug, Aluminum, Natural, T-56, T-45, Tremec TKO, Tremec 3550, T56 Super Magnum, Each

Part Number: AWR-SPUN-10004B

4.46 out of 5 stars ( 13 )

Estimated Ship Date: Today

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American Powertrain Hydramax Hydraulic Clutch Release Systems HMFO30006G

Hydraulic Throwout Bearing Conversion Kits, Hydramax Hydraulic Clutch Release Systems, Blue Aluminum Slave Cylinder, Aluminum Reservoir, Ford, Kit

Part Number: AWR-HMFO30006G

Not Yet Reviewed

Estimated Ship Date: Mar 24, 2025 if ordered today

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Estimated Ship Date: Mar 24, 2025 if ordered today

American Powertrain Speedometer Gears SPUN-10021

Speedometer Gear, Driven, 21-Tooth, Plastic, Red, Each

Part Number: AWR-SPUN-10021

4.4 out of 5 stars ( 15 )

Estimated Ship Date: Today

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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: Today

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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: Mar 20, 2025 if ordered today

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Estimated Ship Date: Mar 20, 2025 if ordered today

American Powertrain Speedometer Cable Adapters SPGM-10006

Speedometer Cable Adapter, Steel, Female Threads, 7/8-18 in. Cable Thread Size, 6 in. Cable, Chevy, Olds, Each

Part Number: AWR-SPGM-10006

Not Yet Reviewed

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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: Mar 24, 2025 if ordered today

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Estimated Ship Date: Mar 24, 2025 if ordered today

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