TH400 Aluminum Direct Drum with Pro Mod Sprag

BTE's new aluminum TH400 direct drum is the perfect combination of weight reduction and durability improvement.  The unique steel and 7075-T6 aluminum construction reduces mass for improved performance and safety, but also retains its strength with a unique bolt in steel center.  This steel center section improves over full aluminum designs by reducing seal and spline wear.

Features:

• 36 element Pro Mod Sprag and new steel outer race - used in applications up to 3000 HP
• More than 25% lighter than steel drums
• Drum includes new pressure plate and Alto clutch pack 
• 7075-T6 Aluminum section features hard anodizing to improve strength
• Unique bolt in center section provides longer service life than 100% aluminum drums