Sonnax heavy duty forward drum 34554-01 is a lightweight upgrade for GM TH400 high performance applications. Significant weight was removed behind the forward piston, leaving a larger fluid apply volume. This larger fluid apply volume does not significantly affect clutch apply and release times, but some sensitive applications may benefit from reduced volume with Sonnax clutch volume spacer kit 34554-11K. The optional spacer is manufactured from billet aluminum.

Reduce clutch fill time when used with heavy duty forward drum 34554-01
Billet aluminum spacer is lighter and more affordable than the OE steel it replaces

More From This Category

Sonnax Friction Ring, Nissan, 9.500in. X 8.250in. X .066", Hte Material, Each

Sonnax Friction Ring, Nissan, 9.500in. X 8.250in. X .066", Hte Material, Each

$18.02

Sonnax Friction Ring, Subaru, 9.250in. X 8.312in. X .045", Each

Sonnax Friction Ring, Subaru, 9.250in. X 8.312in. X .045", Each

$15.52

Sonnax Balance Weight, 150G, W/ Holes

Sonnax Balance Weight, 150G, W/ Holes

$48.09

Sonnax Friction Ring, Mitsubishi, 9.625in. X 8.375in. X .045", Hts Material, Each

Sonnax Friction Ring, Mitsubishi, 9.625in. X 8.375in. X .045", Hts Material, Each

$20.80

Sonnax Thrust Washer, 6T70/75, 6F50/55, Tf-80/81Sc, Oth, Each

Sonnax Thrust Washer, 6T70/75, 6F50/55, Tf-80/81Sc, Oth, Each

$10.92

Sonnax Balance Weight, 80G, W/ Holes

Sonnax Balance Weight, 80G, W/ Holes

$39.47