ESR581 Regulator/Rectifier Yamaha YZ250F YZ450F

ESR581 is a high quality regulator/rectifier that replaces the OEM regulator on various models.

Our ESR581 offers superior performance in the same plug-in package as the OEM unit. We utilize our newest power circuit design and combine it with a highly efficient heat sink. The connectors are identical to OEM so it plugs right in.

ESR581 offers a more stable battery voltage, a perfect charge rate for the battery and a cooler running unit which vastly improves reliability.

This is a great upgrade for the stock unit. ESR581 is supplied with a full one year warranty.