Pinion Esjot steel 17 teeth 17mm for Zündapp Hai 50 Enduro Mokick Type 448-110, CS 448-010, 448-011, GTS 517-39 L0, 529-020, 529-022, 529-023, 529-024, KS Super SL 517-012, RS Scooter 561-051, 561-06 Falconette