GearStar Billet Direct Drums

Unleash the full potential of your transmission with premium billet direct drums by GearStar—they are engineered for high-performance builds using the 4L80E, 4L85E, and TH400 platforms. Designed to handle extreme torque and horsepower, they are the ultimate upgrade for racers, off-roaders, and heavy-duty enthusiasts who demand reliability without compromise. Whether you're chasing quarter-mile times or towing heavy loads, these billet direct drums are your transmission's best ally. They are the perfect blend of OEM compatibility and race-grade engineering.

Key features:

* 36-Element Oversized Sprag—built for brutal launches and high-stress conditions, the oversized sprag delivers unmatched holding power and durability. Say goodbye to sprag failures under load
*Billet aluminum construction—drum is precision-machined from high-strength billet for superior rigidity and heat resistance (this drum won't flex or fatigue under pressure)
* Factory-Size 4L80E/4L85E Friction Compatibility—retains OEM friction dimensions for optimal clutch surface area and thermal management, no need to downgrade to smaller Powerglide frictions—this drum keeps your build robust and reliable
* High-capacity clutch design—drum is designed to hold additional clutches to provide maximum durability in extreme conditions
* TH400 compatibility—seamlessly integrates with TH400 setups, making it a versatile choice for hybrid builds and custom applications
* Drop-In ready drum is designed for easy installation with no need for custom machining or exotic components
* Built to work with your existing clutch pack and transmission architecture Show Less