This drum is a must for all applications over 750 HP.
BTE's TH400 Pro Mod drum upgrades the standard direct drum with an all new inner and outer race setup and an ultra strong 36 element sprag. BTE's drum is different from other super drums that have used OEM outer races from 4T80E transmissions. This new drum features an all new outer race manufactured by BTE from high quality steel and heat treated to specifications more suited for high performance.
Kit includes assembled drum as well as clutch pack and pressure plate.