TH400 Aluminum Steel Combo Forward Drum

4340/7075 Billet COMBO Forward Drum

The EXtreme Automatics™  COMBO Forward Drum offers the best of both materials.

The center Hub is 4340 when the splines contact the drum while the Clutch Basket is 7075 Hard Anodized Aluminum.

This drum is used in applications from stock to 2000HP, and features The Vasco Max® 1" input shaft 

AERMET 2500HP 30 SPLINE INPUT IS OPTIONAL!!

CNC oversized spline to prevent stripping of the forward drum, a common occurrence with stock 400 input shafts.

**Requires Support Bushing in Torque Converter**