Maximize your transmission's power potential! TCI sprag and drum assemblies are designed to reduce rotating mass without compromising drum integrity. They will hold up to five clutches and are hard coated for improved wear characteristics.

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TCI TH400 HD Forward Drum Assembly.

TCI TH400 HD Forward Drum Assembly.

$1,090.04

ATI Performance Products Drum Assy, Alum Direct w/ 6 Clutches, Billet Piston, 34 Element Sprag, Loaded, T400 400

ATI Performance Products Drum Assy, Alum Direct w/ 6 Clutches, Billet Piston, 34 Element Sprag, Loaded, T400 400

$1,392.81

TCI C4 High Gear Clutch Piston for 743910.

TCI C4 High Gear Clutch Piston for 743910.

$61.73

TCI 700R4/4L60E Forward 29-Element Sprag

TCI 700R4/4L60E Forward 29-Element Sprag

$206.63

ATI Performance Products Sprag, Intermediate (OEM)

ATI Performance Products Sprag, Intermediate (OEM)

$55.05

TCI 5R55S Overdrive Sprag

TCI 5R55S Overdrive Sprag

$180.09