ATS ZF 8HP9X DIY Upgrade Kit

Upgrade your ZF 8HP90 or 8HP95 transmission at home with ATS’s proven performance components—designed to handle higher torque, improve clutch durability, and extend lifespan without the need to send your transmission in. Whether you’re building a powerful street car or prepping for the track, this DIY kit gives you access to the same billet and clutch upgrades ATS uses in-house.

Available in two configurations—Stage 1 and Stage 2—so you can match your build goals:

Stage 1 – Reinforced Hubs and Increased Holding Power
Ideal for mild-to-moderate power increases, ATS Stage 1 includes billet aluminum upgrades and enhanced clutch packs to improve torque capacity and reliability.

Upgrades include:

• C Clutch: 1 ATS Apply Plate, 12 Alto G3 Fibers, 12 ATS Steels
• E Clutch: ATS 7075 Billet E Hub, 12 Alto G3 Fibers, 13 ATS Steels
• A Clutch: 7 Alto Fibers, 1 Pressure Plate, 6 ATS Steels, 1 ATS Apply Plate
• B Clutch: 6 Alto Fibers, 1 ATS Apply Plate, 5 ATS Steels
• D Clutch: 6 Alto Fibers, 1 ATS Pressure Plate, 1 ATS Apply Plate, 5 ATS Steels
• Seal/O-ring package
• Filter and Gasket

Stage 2 – Maximum Torque Handling and Billet Componentry
For aggressive builds with superchargers, big turbos, or dedicated track use, Stage 2 includes billet hubs and higher clutch capacity for serious torque demands.

Upgrades include:

• C Clutch: ATS 7075 Billet C Hub, 13 Alto G3 Fibers, 1 Pressure Plate, 1 Apply Plate, 12 ATS Steels
• E Clutch: ATS 7075 Billet E Hub, 12 Alto G3 Fibers, 13 ATS Steels
• A Clutch: 7 Alto Fibers, 1 ATS Pressure Plate, 6 ATS Steels, 1 ATS Apply Plate
• B Clutch: 6 Alto G3 Fibers, 1 ATS Apply Plate, 5 ATS Steels
• D Clutch: 8 Alto G3 Fibers, 1 ATS Pressure Plate, 1 Apply Plate, 7 ATS Steels
• Seal/O-ring package
• Filter and Gasket