CENTURY CLUTCH SHOES - All NX v2.0 Predator Gassers Use on: * All Predator NX (replacement part) * All Predator Condor (replacement part) * Pre-NX Predator Gasser, Gasser SE, Carbon Gasser with Heavy Duty Clutch System Version 1 or Version 2 (replacement part) * Pre-NX Predator Gasser, Gasser SE, Carbon Gasser without Heavy Duty Clutch System (optional upgrade) Requirements: * Predator Gasser without Super Heavy Duty Clutch System * Predator Gasser SE without Super Heavy Duty Clutch System * Predator Carbon Gasser without Super Heavy Duty Clutch System * Predator Carbon Gasser SE without Super Heavy Duty Clutch System Super Heavy Duty Clutch Bell (HW6013HD) AND Super Heavy Duty Lower Bearing Block with Ball Bearing (HW6045HD) All other applicable helis No requirements. Direct replacement part.