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 5R55S Overdrive Sprag

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ATI Performance Products Sprag, Intermediate, Heavy Duty, 34-Element, 65-71, Bwa

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TCI C4 High Gear Clutch Piston for 743910.

TCI C4 High Gear Clutch Piston for 743910.

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ATI Performance Products Sprag, Roller Type, Steel, for GM TH400 Automatic Transmission (1966 and Later), Each

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ATI Performance Products Sprag, Reverse (OEM), Bwa

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TCI 700R4/4L60E Forward 29-Element Sprag

TCI 700R4/4L60E Forward 29-Element Sprag

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