#66BD. TH400 / 4L80E Billet Aluminum Direct Drum.
This TH400 Billet Aluminum Direct Drum is manufactured specifically for drag racing.
Comes complete with:
- Billet aluminum piston and 3 Sure Seal sealing rings.
- Billet aluminum 7075 T6 drum weighs 3.39 lbs. 55% less than the OEM drum.
- Holds up to 6 frictions with a TCS billet apply piston.
- Utilizes a 34 element high performance sprag.
- 1/4″ locking dowels to eliminate inner race movement.
- Steel sleeve for sealing ring.