SKU: TCI227900
UPC: 788120002813
MPN: 227900
The TH400 Racing Sprag by TCI is specifically designed for drag racing and high-performance street applications where transmission durability is crucial. This sprag replaces the factory one-way clutch mechanism in TH400 transmissions, making it an essential upgrade for racers and performance builders who need reliability during hard launches and sustained acceleration.
Engineered to withstand shock loads and repetitive stress cycles, the racing sprag utilizes premium materials and tighter tolerances compared to OEM designs. It functions as a mechanical overrunning clutch, preventing back-rotation of the transmission drum under engine braking and load reversal conditions. This component works with the transmission's planetary gearset to maintain positive drive engagement during launch, reducing slip and maximizing power transfer to the wheels.
Dedicated drag racers, bracket racers, and street performance enthusiasts with supercharged or nitrous-assisted TH400 transmissions will benefit most from this upgrade. It is recommended for applications producing 600+ horsepower, ensuring that serious racers can rely on its performance under extreme conditions.
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