RTS Transmission Direct Drum, 34 Element, TH400 Billet Aluminum Mil Spec Coated, Each - RTS-DDATH400Part Number: RTS DDATH400 RTS Direct Drums features aerospace grade materials and unparalleled holding capacity, our Turbo 400 direct drums are second to none. Aluminum with Mil Spec anodized coating for street strip or race only application. We recommend this aluminum design for pure track use. Drop in design works with any Turbo 400 Complete Drum Assembly Allows the use of up to 5 Intermediate Frictions 6061 T6 Aluminum Custom hex lock inner sprag