Rd Gx Eagle Lunar, Rear Derailleur Gx Eagle 12 Speed Lunar Max 52T Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... Rd Gx Eagle Lunar, Rear Derailleur Gx Eagle 12 Speed Lunar Max 52T Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...