Conversions 89-93 C4 Vette ZF 6sp Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SC421ZS Torque Capacity 505 Pricing $475.00 Stage 2 Product Number SC422ZS Torque Capacity 600 Pricing $559.00 Stage 2+ Product Number SC423HZS Torque Capacity 665 Pricing $639.00 Stage 3 Product Number SC423ZS Torque Capacity 762 Pricing $599.00 Stage 3+ Product Number SC423FZS Torque Capacity 845 Pricing $749.00 Stage 4 Product Number SC424ZS Torque Capacity 762 Pricing $599.00 Stage 5 Product Number SC425Z Torque Capacity 1008 Pricing $749.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Steel Product Number SC05SLS-2 Pricing $429.00 None Not Available Pricing Questions? Give us a call. 1-800-828-4379