ZF 8HP50 8HP51 DIY Upgrade Kit

Take control of your transmission build with the ATS ZF 8HP50 / 8HP51 DIY Upgrade Kit, designed for enthusiasts and builders who want to upgrade their transmission in-house rather than sending it in for a full rebuild. Available in Stage 0, Stage 1, and Stage 2, these kits provide carefully selected clutch components and critical hardware to handle higher power while maintaining OE drivability and shift quality. Stage 0 – Street Duty Kit Perfect for daily-driven vehicles looking to enhance reliability and shift performance without extensive modifications. Includes: C Clutch Pack: 9 Alto G3 fibers, 1 ATS pressure plate, 1 ATS apply plate, 8 ATS steels E Clutch Pack: 9 Alto G3 fibers, 1 ATS pressure plate, 1 ATS apply plate, 8 ATS steels A Clutch Pack: 6 Alto fibers, 1 ATS pressure plate, 1 ATS apply plate, 5 ATS steels B Clutch Pack: 6 Alto fibers, 1 ATS apply plate, 5 ATS steels D Clutch Pack: 5 Alto fibers, 1 ATS pressure plate, 1 ATS apply plate, 4 ATS steels Seal & O-ring package Deeper stock-style pan (for improved fluid volume and cooling) Stage 1 | Horsepower Rating: 1,200 HP | Torque Rating: 1,000 N·m For aggressive street builds and weekend racers. Adds billet aluminum components and upgraded clutch packs for higher torque tolerance. Includes: C Clutch Pack: 10 Alto G3 fibers, 1 ATS pressure plate, 1 apply plate, 9 ATS steels E Clutch Pack: ATS 7075 Billet E Hub, 10 Alto G3 fibers, 1 ATS pressure plate, 1 ATS apply plate, 9 ATS steels A Clutch Pack: 6 Alto fibers, 1 ATS pressure plate, 1 ATS apply plate, 5 ATS steels B Clutch Pack: 6 Alto fibers, 1 ATS apply plate, 5 ATS steels D Clutch Pack: 5 Alto fibers, 1 ATS pressure plate, 1 ATS apply plate, 4 ATS steels Seal & O-ring package Deeper stock-style pan with integrated filter Stage 2 | Horsepower Rating: 1,400 HP | Torque Rating: 1,200 N·m The ultimate DIY kit for built engines and high-power applications. Includes billet C and E hubs, molded pistons, and hardware upgrades for extreme reliability. Includes: C Clutch Pack: ATS 7075 Billet C Hub, 1 molded piston, 1 apply plate, 12 Alto G3 fibers, 1 pressure plate, 11 ATS steels E Clutch Pack: ATS 7075 Billet E Hub, 11 Alto G3 fibers, 1 ATS pressure plate, 1 apply plate, 10 ATS steels A Clutch Pack: 6 Alto fibers, 1 ATS pressure plate, 1 ATS apply plate, 5 ATS steels B Clutch Pack: 6 Alto fibers, 1 ATS apply plate, 5 ATS steels D Clutch Pack: 6 Alto G3 fibers, 1 ATS pressure plate, 1 ATS apply plate, 5 ATS steels Upgraded D snap ring Upgraded pump bolts Upgraded torque converter bolts Seal & O-ring package Deeper stock-style pan with integrated filter