
Replace the worn sprocket with a simple and robust transmission part: the JT Sprockets standard steel sprocket 1832 - 420 is designed to fit 420 transmissions and restore the original gearing. Ideal for small urban trails and enduros, it follows standard dimensions for direct mounting.
The choice of C49 steel meets the requirements of transmission components subjected to repeated stresses. This sprocket follows the original specifications to maintain chain geometry and gearing consistency. It is particularly suitable for YAMAHA DT 50 R ENDURO models from 2000 to 2002, among other machines equipped with 420.
Workshop tip: check the condition of the sprocket and chain during replacement ā changing the entire sprocket/chain assembly limits the risk of premature wear and makes tension adjustment easier. Installation and tightening should follow manufacturer recommendations.