8HP50 / 8HP51 / 8HP45 Stage 2 DIY Kit | Transmission Rebuild Kits

Take your ZF8HP transmission to the next level with the Applied Torque Solutions Stage 2 DIY Kit. Designed for high performance, drag racing, and high horsepower applications, this upgrade package delivers reinforced clutch assemblies, billet components, upgraded hardware, and sealing components needed to strengthen the ZF8HP platform.

This kit is engineered primarily for ZF8HP50 and ZF8HP51 transmissions, while also supporting ZF8HP45 applications. Early model 8HP45 transmissions will require a P3 sun gear to match E hub spline count compatibility. P3 sun gears are available separately.

Built around proven ATS billet components and Alto G3 friction materials, this package addresses common weak points while increasing clutch capacity and durability for demanding street and race builds.

Included Components

C Clutch Package

• ATS 7075 Billet Aluminum C Hub
• Apply Plate
• 11 Alto G3 Clutch Fibers
• Pressure Plate
• 10 ATS Steels

E Clutch Package

• ATS 7075 Billet Aluminum E Hub
• 11 Alto G3 Clutch Fibers
• ATS Pressure Plate
• Apply Plate
• 10 ATS Steels

A Clutch Package

• 6 Alto Clutch Fibers
• ATS Pressure Plate
• ATS Apply Plate
• 5 ATS Steels

B Clutch Package

• 6 Alto Clutch Fibers
• ATS Pressure Plate
• ATS Apply Plate
• 5 ATS Steels

D Clutch Package

• 6 Alto G3 Clutch Fibers
• ATS Pressure Plate
• ATS Apply Plate
• 5 ATS Steels
• Upgraded D Snap Ring

Additional Upgrades Included

• Upgraded Pump Bolts
• Upgraded Torque Converter Bolts
• Seal and O-Ring Package
• Deep Stock Style Transmission Pan with Integrated Filter

The ATS Stage 2 DIY Kit is ideal for enthusiasts and builders looking to strengthen their ZF8HP50, ZF8HP51, or ZF8HP45 transmission for increased power handling and long-term reliability.