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 547

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

3.97 out of 5 stars ( 38 )

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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Estimated Ship Date: Tomorrow

American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits 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: May 27, 2025 if ordered today

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Estimated Ship Date: May 27, 2025 if ordered today

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 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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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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Estimated Ship Date: Tomorrow

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

Estimated Ship Date: May 27, 2025 if ordered today

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Estimated Ship Date: May 27, 2025 if ordered today

American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits 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: May 27, 2025 if ordered today

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Estimated Ship Date: May 27, 2025 if ordered today

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: Tomorrow

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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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain ProFit Tremec TKX Manual Transmission and Installation Kits COGM-F3FX

Transmission Combo, ProFit, Tremec TKX, 5-Speed, 2.87:1 First Gear, 0.68:1 Fifth Gear, GM, F-Body, 1975-81, Kit

Part Number: AWR-COGM-F3FX

Not Yet Reviewed

Estimated Ship Date: May 27, 2025 if ordered today

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Estimated Ship Date: May 27, 2025 if ordered today

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: 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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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

Estimated Ship Date: Tomorrow

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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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Apr 7, 2025 if ordered today

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Estimated Ship Date: Apr 7, 2025 if ordered today

American Powertrain Transmission Tunnels SMGM-10005

Floor Panels, Transmission Tunnel Patch, Fiberglass, Black, Designed To Clearance Tremec TKO and T56 Transmissions, Chevy, Each

Part Number: AWR-SMGM-10005

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain Manual Transmissions COGM-X1BX

ProFit TKX Combo Kit for 1962-67 Chevy Nova/Chevy II .72 OD

Part Number: AWR-COGM-X1BX

Not Yet Reviewed

Estimated Ship Date: Apr 28, 2025 if ordered today

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Estimated Ship Date: Apr 28, 2025 if ordered today

American Powertrain Hydramax Hydraulic Clutch Release Systems HMGM01105G

Hydraulic Throwout Bearing Conversion Kits, Hydramax Hydraulic Clutch Release Systems, Remote Reservoir, Hoses, Tremec, Chevrolet, Pontiac, Kit

Part Number: AWR-HMGM-01105G

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 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 Manual Transmission Bellhousings BHCH-10004

New Chrysler Big Block CNC Aluminum Bellhousing, 130t/143t applications, TKO, All A-833, includes bell, preci

Part Number: AWR-BHCH10004

4.11 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

American Powertrain X-Factor Crossmembers 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

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