Description
Spool Performance 8HP70 / 8HP75 / 8HP76 Upgraded Billet 7075-T6 D Clutch Drum
The factory A380 cast-aluminum D-drum in ZF 8HP70, 8HP75, and 8HP76 transmissions is prone to cracking, distortion, and oil starvation under high-load, high-RPM clutch events. Spool Performance eliminates these weaknesses with a fully CNC-machined billet 7075-T6 D Clutch Drum, engineered for extreme durability and precise hydraulic control in high-horsepower builds.
Key Features & Benefits
7075-T6 Aerospace-Grade Aluminum:
- Tensile strength ~74–78 ksi vs. A380 cast aluminum ~46 ksi
- Significantly higher resistance to cracking, deformation, and fatigue
Lightweight Yet Strong:
- Near-steel strength at half the weight
- Deep anodizing prevents clutch teeth deformation
- Reduced rotational inertia improves shift speed and drivetrain responsiveness
Precision CNC Machining:
- Perfect roundness, no casting porosity
- Consistent wall thickness, zero structural voids
- Cleaner, faster clutch engagement at high line pressures
Improved Oil Pathways:
- Re-engineered oil feeds and flow channels for better clutch lubrication
- Enhanced cooling reduces heat soak during aggressive driving
- Ensures longer clutch life and higher power tolerance
Better Heat Dissipation:
- Aluminum 7075 conducts heat more efficiently than steel
- Stabilizes clutch pack temperatures under repeated high-load gear changes
Why Upgrade?
- Eliminates stock drum failures in high-horsepower builds
- Ideal for upgraded turbos, ethanol blends, or heavy AWD launches
- Provides precise hydraulic control for aggressive driving and racing applications
- Designed to handle torque and line pressure levels that overwhelm the stock A380 unit
Fitment
Compatible ZF Transmissions:
- ZF 8HP70
- ZF 8HP75
- ZF 8HP76
Applications: Suitable for vehicles running high horsepower, upgraded clutch packs, ethanol blends, or high-load AWD setups.
The Spool Performance Billet 7075-T6 D Clutch Drum is a critical upgrade for reliability, durability, and precise clutch performance in high-power ZF transmissions.
Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.
