GM TH400 Direct Clutch Assembly w/ Direct Clutch Hub - Racing or better known to mechanics

or better known to mechanics as the IAC

867 in diameter

20 gearset are assembled with Torrington bearings to replace the factory spec thrust washers

These Speedmaster piston oil ring spacers are used in applications where the piston oil ring groove intersects the pinhole

Speedmaster valve locks are wider-angled 10 degree locks

GM TH400 Direct Clutch Assembly w/ Direct Clutch Hub - Racing or better known to mechanicsSpeedmaster direct drums are designed to prevent slippage and are able to withstand strong shifts on high horsepower applications. These kits include high carbon steel plates, a pressure plate, and a direct clutch hub.